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quad hdmi fast switching receiver with 12-bit, 170 mhz video and graphics digitizer a nd 3d comb filter decoder data sheet adv7844 features quad hdmi? 1.4 fast switching receiver hdmi support audio return channel (arc) 3d tv support content type bits cec 1.4-compatible extended colorimetry hdmi 225 mhz receiver xpressview fast switching of hdmi ports 2 arc interfaces for arc support spdif interface for arc support 3d video format support, including frame packing 1080p 24 hz, 720p 50 hz, 720p 60 hz full colorimetry support including sycc601, adobe rgb, adobe ycc 601 36-/30-bit deep color and 24-bit color support hdcp 1.4 support with internal hdcp keys 5 v detect and hot plug assert for each hdmi port adaptive hdmi equalizer integrated cec controller hdmi repeater support hdmi audio support including hbr and dsd advanced audio mute feature flexible digital audio output interfaces supports up to 5 s/pdif outputs supports up to 4 i 2 s outputs video and graphics digitizer four 170 mhz, 12-bit adcs 12-channel analog input mux 525i-/625i-component analog input 525p-/625p-component progressive scan support 720p-/1080i-/1080p-component hdtv support low refresh rates (24/25/30 hz) support for 720p/1080p digitizes rgb graphics up to 1600 1200 at 60 hz (uxga) scart fast blank support 3d video decoder ntsc/pal/secam color standards support ntsc/pal 2d/3d motion detecting comb filter advanced time-base correction (tbc) with frame synchronization interlaced-to-progressive conversion for 525i and 625i if compensation filters vertical peaking and horizontal peaking filters robust synchronization extraction for poor video source advanced vbi data slicer general highly flexible 36-bit pixel output interface internal edid ram for hdmi and graphics dual stdi (standard identification) function support any-to-any, 3 3 color space conversion (csc) matrix 2 programmable interrupt request output pins simultaneous analog processing and hdmi monitoring applications advanced tvs pdp hdtvs lcd tvs (hdtv ready) lcd/dlp? rear projection hdtvs lcos? hdtvs avr video receivers hdtv stbs with pvr projectors functional block diagram adc adc adc adc input mux output mux output mux cvbs scart g scart cvbs scart rgb + cvbs graphics rgb cvbs yc hdmi 1 hdmi 2 hd ypbpr sd/ps ypbpr scart b scart r y/g pb/b pb/r i 2 s s/pdif dsd hbr mclk sclk cvbs hs/vs field/de clk hs/vs field/de clk 36-bit ycbcr/rgb audio output mclk sclk to audio processor data sdp cvbs 3d yc s-video scart hs/vs field/de clk data cp ypbpr 525p/625p 720p/1080i 1080p/ uxga rgb 48 36 4 5 sdram tmds ddc tmds ddc hdmi 3 tmds ddc hdmi 4 tmds ddc s/pdif arc_1 arc_2 arc deep color hdmi rx fast switch hdcp keys adv7844 08850-001 figure 1. rev. b information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2012 analog devices, inc. all rights reserved.
adv7844 data sheet rev. b | page 2 of 32 table of contents features .............................................................................................. 1 ? applications....................................................................................... 1 ? functional block diagram .............................................................. 1 ? revision history ............................................................................... 2 ? general description ......................................................................... 3 ? detailed functional block diagram .............................................. 4 ? specifications..................................................................................... 5 ? electrical characteristics............................................................. 5 ? power specifications .................................................................... 6 ? analog specifications................................................................... 8 ? video specifications..................................................................... 9 ? timing characteristics .............................................................. 10 ? timing diagrams........................................................................ 11 ? absolute maximum ratings.......................................................... 12 ? package thermal performance................................................. 12 ? esd caution................................................................................ 12 ? pin configuration and function descriptions........................... 13 ? power supply sequencing.............................................................. 23 ? power-up sequence ................................................................... 23 ? power-down sequence.............................................................. 23 ? functional overview...................................................................... 24 ? hdmi receiver........................................................................... 24 ? analog front end....................................................................... 24 ? standard definition processor ................................................. 25 ? component processor ............................................................... 25 ? other features ............................................................................ 26 ? external memory requirements .................................................. 27 ? single data rate (sdr).............................................................. 27 ? double data rate (ddr) .......................................................... 27 ? pixel input/output formatting .................................................... 28 ? pixel data output modes features .......................................... 28 ? register map architecture ............................................................ 29 ? outline dimensions ....................................................................... 30 ? ordering guide .......................................................................... 30 ? revision history 4/12rev. b: initial version
data sheet adv7844 rev. b | page 3 of 32 general description the adv7844 is a high quality, single-chip, 4:1 multiplexed hdmi receiver and graphics digitizer with an integrated multiformat video decoder. the adv7844 incorporates a quad input hdmi-compatible receiver that supports all hdtv formats up to 1080p and display resolutions up to uxga (1600 1200 at 60 hz). the adv7844 incorporates xpressview? fast switching on all input hdmi ports. using the analog devices, inc., hardware- based hdcp engine that minimizes software overhead, xpressview? technology allows fast switching between any hdmi input ports in less than 1 second. the adv7844 supports all mandatory hdmi 3d tv formats in addition to all hdtv formats up to 1080p 36-bit deep color. the adv7844 also integrates an hdmi cec controller that supports the capability discovery and control (cdc) feature. the adv7844 offers a flexible audio output port for the audio data decoded from the hdmi stream. hdmi audio formats, including super audio cd (sacd) via dsd and hbr are supported. the adv7844 also features the audio return channel (arc) feature. arc simplifies cabling by combining upstream audio capability in a conventional hdmi cable. each hdmi port has dedicated 5 v detect and hot plug assert pins. the hdmi receiver also includes an integrated equalizer that ensures robust operation of the interface with cable lengths up to 30 meters. the hdmi receiver has advanced audio functionality, such as a mute controller, that prevents audible extraneous noise in the audio output. the multiformat 3d comb filter decoder supports the conversion of pal, ntsc, and secam standards in the form of a composite or an s-video input signal into a digital itu-r bt.656 format. scart and overlay functionality are enabled by the ability of the adv7844 to process cvbs and standard definition rgb signals simultaneously. the adv7844 contains one main component processor (cp), which processes ypbpr and rgb component formats, including rgb graphics. the cp also processes the video signals from the hdmi receiver. the adv7844 can operate in quad hdmi and analog input mode, thus allowing for fast switching between the adcs and hdmi. the adv7844 supports the decoding of a component rgb/ ypbpr video signal into a digital ycbcr or rgb pixel output stream. the support for component video includes 525i, 625i, 525p, 625p, 720p, 1080i, 1080p, and 1250i standards, as well as many other smpte and hd standards. the adv7844 supports graphics digitization. the adv7844 is capable of digitizing rgb graphics signals from vga to uxga rates and converting them into a digital rgb or ycbcr pixel output stream. internal edid is available for one graphic port. fabricated in an advanced cmos process, the adv7844 is provided in a 19 mm 19 mm, 425-ball, csp bga, surface- mount, rohs-compliant package, and is specified over the 0c to 70c temperature range.
adv7844 data sheet rev. b | page 4 of 32 detailed functional block diagram adc0 clamp 12 adc1 clamp 12 adc2 clamp 12 adc3 clamp 12 (a) (b) (c) (d) (a) (b) (c) 12 12 12 cec controller 5v detect and hpd controller hs/cs, vs/field control control and data vbi decoder i 2 c readback ancillary data formatter fast i 2 c interface video data processor interrupt controller fast switching block + hdmi decode + mux deep color conversion filter packet processor 4:2:2 to 4:4:4 conversion packet/ infoframe memory audio processor audio output formatter video output formatter ttx_sda/ttx_scl sync_out field/de vs/field hs/cs llc p0 to p11 p12 to p23 p24 to p35 int1 int2 ap0 ap1 ap2 ap3 ap4 ap5 sclk mclk active peak and hsync depth noise and calibration offset adder macrovision and cgms detection cp csc and decimation filters av code insertion standard identification sync extract (esdp) sync source and polarity detect component processor digital processing block standard definition processor (sdp) 2d comb 3d comb ddr/sdr-sdram interface tbc vertical peaking horizontal peaking cti and lti standard autodection macrovision detection interlace to progressive conversion decimation filters color space conversion fastblank overlay control aout cvbs yc scart rgb yprpb rgb sync1 sync2 sync3 sync4 hs_in1/tri5 vs_in1/tri6 hs_in2/tri7 vs_in2/tri8 tri1 to tri4 scl sda avlink cec rxa_5v/hpa_a rxb_5v/hpa_b rxc_5v/hpa_c 12-channe l input matrix analog front end llc generation sync processing and clock generation tri-level slicer i 2 c control interface avlink controller 08850-002 mux gain control digital fine clamp program- mable delay edid/ repeater controller hdcp eeprom rxd_5v/hpa_d ddca_sda/ddca_sc l ddcb_sda/ddcb_sc l ddcc_sda/ddcc_sc l ddcd_sda/ddcd_sc l pll equal- izer equal- izer hdcp block sampler rxa_c rxb_c rxa_0 rxa_1 rxa_2 equal- izer sampler rxc_0 rxc_1 rxc_2 equal- izer audio return channel sampler rxd_0 rxd_1 arc_1 arc_2 spdif_in rxd_2 rxb_0 rxb_1 rxb_2 sampler figure 2. detailed functional block diagram
data sheet adv7844 rev. b | page 5 of 32 specifications avdd = 1.8 v 5%, cvdd = 1.8 v 5%, dvdd = 1.8 v 5%, pvdd = 1.8 v 5%, dvddio = 3.3 v 5%, tvdd = 3.3 v 5%, vdd_sdram = 3.2 v to 3.4 v (sdr), vdd_sdram = 2.35 v to 2.65 v (ddr). t min to t max = 0c to 70c, unless otherwise noted. electrical characteristics table 1. parameter symbol test conditions/comments min typ max unit static performance resolution (each adc) n 12 bits integral nonlinearity inl 27 mhz (at a 12-bit level) ?3.0 to +8.0 lsb 54 mhz (at a 12-bit level) ?3.0 to +8.0 lsb 74.25 mhz (at a 12-bit level) ?4.0 to +7.0 lsb 108 mhz (at a 11-bit level) ?3.5 to +8.0 lsb 170 mhz (at a 9-bit level) ?0.7 to +1.5 lsb differential nonlinearity dnl 27 mhz (at a 12-bit level) ?0.7 to +0.8 lsb 54 mhz (at a 12-bit level) ?0.7 to +0.8 lsb 75 mhz (at a 12-bit level) ?0.7 to +0.8 lsb 108 mhz (at a 11-bit level) ?0.7 to +0.8 lsb 170 mhz (at a 9-bit level) ?0.6 to +0.5 lsb digital inputs input high voltage v ih xtaln and xtalp pins 1.2 v input low voltage v il xtaln and xtalp pins 0.4 v v ih other digital inputs 2 v v il other digital inputs 0.8 v input current i in reset pin 60 a ep_miso pin 60 a spdif_in pin 60 a test4 pin 60 a test6 pin 60 a other digital inputs 10 a input capacitance c in 10 pf digital inputs (5 v tolerant) 1 input high voltage v ih 2.6 v input low voltage v il 0.8 v input current i in ?82 +82 a digital outputs output high voltage v oh 2.4 v output low voltage v ol 0.4 v high impedance leakage current i leak 10 a output capacitance c out 20 pf 1 the following pins are 5 v tolerant: hs_i n1/tri5, hs_in2/tri7, vs_in1 /tri6, vs_in2/tri8, rxa_5v, rxb_5v, rxc_5v, rxd_5v, ddca_ scl, ddca_sda, ddcb_scl, ddcb_sda, ddcc_scl, ddcc_sda, ddcd_scl, and ddcd_sda.
adv7844 data sheet rev. b | page 6 of 32 power specifications table 2. parameter symbol min typ max unit test conditions/comments power requirements digital core power supply vdd 1.75 1.8 1.85 v digital i/o power supply dvddio 3.14 3.3 3.46 v sdram power supply vdd_sdram 3.2 3.3 3.4 v sdr memory 2.35 2.5 2.65 v ddr memory pll power supply pvdd 1.71 1.8 1.89 v analog power supply avdd 1.71 1.8 1.89 v terminator power supply tvdd 3.14 3.3 3.46 v comparator power supply cvdd 1.71 1.8 1.89 v current consumption 1 , 2 , 3 digital core supply current i vdd 155 220 ma analog 1080p sampling at 148 mhz 149 205 ma rgb graphics sampling at 162 mhz 365 445 ma rgb graphics sampling at 162 mhz in simultaneous mode with all background ports enabled 148 210 ma hdmi 1080p: 12-bit deep color 298 385 ma hdmi 1080p: 12-bit deep color with all background ports enabled 440 475 ma sd core 576i processing in simultaneous mode with all background ports enabled 480 525 ma scart processing in simultaneous mode with all background ports enabled digital i/o supply current i dvddio 55 120 ma analog 1080p sampling at 148 mhz 40 122 ma rgb graphics sampling at 162 mhz 37 120 ma rgb graphics sampling at 162 mhz in simultaneous mode with all background ports enabled 15 175 ma hdmi 1080p: 12-bit deep color 14 175 ma hdmi 1080p: 12-bit deep color with all background ports enabled 9 11 ma sd core 576i processing in simultaneous mode with all background ports enabled 9 10 ma scart processing in simultaneous mode with all background ports enabled pll supply current i pvdd 27 30 ma analog 1080p sampling at 148 mhz 25 29 ma rgb graphics sampling at 162 mhz 24 28 ma rgb graphics sampling at 162 mhz in simultaneous mode with all background ports enabled 34 37 ma hdmi 1080p: 12-bit deep color 35 38 ma hdmi 1080p: 12-bit deep color with all background ports enabled 33 36 ma sd core 576i processing in simultaneous mode with all background ports enabled 33 38 ma scart processing in simultaneous mode with all background ports enabled
data sheet adv7844 rev. b | page 7 of 32 parameter symbol min typ max unit test conditions/comments analog supply current i avdd 210 235 ma analog 1080p sampling at 148 mhz 215 240 ma rgb graphics sampling at 162 mhz 214 235 ma rgb graphics sampling at 162 mhz in simultaneous mode with all background ports enabled 0 0.1 ma hdmi 1080p: 12-bit deep color 0 0.1 ma hdmi 1080p: 12-bit deep color with all background ports enabled 80 90 ma sd core 576i processing in simultaneous mode with all background ports enabled 260 285 ma scart processing in simultaneous mode with all background ports enabled terminator supply current 4 i tvdd 85 95 ma one port connected 260 280 ma four ports connected comparator supply current i cvdd 105 120 ma hdmi 1080p: 12-bit deep color 420 440 ma hdmi 1080p: 12-bit deep color in simultaneous mode with all background ports enabled memory interface supply current i vdd_sdram 28 35 ma cvbs input sampling at 54 mhz power-down currents 5 i dvddio 0.1 ma i vdd_sdram 2.6 ma i vdd 10 ma i avdd 0.1 ma i cvdd 0.5 ma i tvdd 2.2 ma i pvdd 1.7 ma power-up time t pwrup 25 ms 1 all maximum current values are guaranteed by charac terization to assist in power supply design. 2 typical current consumption values are recorded with nominal voltage supply levels, smpte bar video pattern, and at room tempe rature. 3 maximum current consumption va lues are recorded with maximum ra ted voltage supply levels, moirex video pattern, and at maximum rated temperature. 4 termination power supply includ es tvdd current consumed off chip. 5 power-down mode entered by setting bit power_down high.
adv7844 data sheet rev. b | page 8 of 32 analog specifications table 3. parameter test conditions /comments min typ max unit clamp circuitry 1 input impedance clamps switched off 10 m analog (ain1 C ain12) adc midscale (cml) 0.91 v adc full-scale level cml + 0.55 v adc zero-scale level cml ? 0.55 v adc dynamic range 1.1 v clamp level (when locked) component input, y signal cml ? 0.12 v component input, pr signal cml v component input, pb signal cml v pc rgb input (r, g, b signals) cml ? 0.12 v cvbs input cml ? 0.205 v scart rgb input (r, g, b signals) cml ? 0.205 v s-video input (y signal) cml ? 0.205 v s-video input (c signal) cml v large clamp source current sdp only 0.3 ma large clamp sink current sdp only 0.4 ma fine clamp source current sdp only 9 a fine clamp sink current sdp only 8 a 1 specified for external clamp capacitor of 100 nf.
data sheet adv7844 rev. b | page 9 of 32 video specifications table 4. parameter symbol test conditions /comments min typ max unit nonlinear specifications differential phase dp cvbs input (modulated five-step) 0.6 degrees differential gain dg cvbs input (modulated five-step) 0.8 % luma nonlinearity lnl cvbs input (modulated five-step) 0.9 % noise specifications measured at 27 mhz llc snr unweighted luma ramp 63 db snr unweighted luma flat field 64 db analog front-end crosstalk 60 db lock time specifications (sdp) horizontal lock range 5 % vertical lock range 40 70 hz subcarrier lock range f sc 0.8 khz color lock-in time 60 lines sync depth range 1 20 200 % color burst range 1 200 % vertical lock time 300 ms horizontal lock time 100 lines chroma specifications (sdp) chroma amplitude error 0.9 % chroma phase error 0.3 degrees chroma luma intermodulation 0.3 %
adv7844 data sheet rev. b | page 10 of 32 timing characteristics data and i 2 c timing characteristics table 5. parameter 1 symbol test conditions/comments min typ max unit clock and crystal crystal frequency, xtal 28.63636 mhz crystal frequency stabi lity 50 ppm horizontal sync input frequency 10 110 khz llc frequency range 12.825 170 mhz i 2 c ports scl frequency 400 khz scl minimum pulse width high t 1 600 ns scl minimum pulse width low t 2 1.3 s start condition hold time t 3 600 ns start condition setup time t 4 600 ns sda setup time t 5 100 ns scl and sda rise time t 6 1000 ns scl and sda fall time t 7 300 ns stop condition setup time t 8 0.6 s ttx i 2 c ports scl frequency 3.4 mhz scl minimum pulse width high t 1 60 ns scl minimum pulse width low t 2 160 ns start condition hold time t 3 160 ns start condition setup time t 4 160 ns sda setup time t 5 10 ns scl and sda rise time t 6 10 80 ns scl and sda fall time t 7 10 80 ns stop condition setup time t 8 160 ns reset feature reset pulse width 5 ms clock outputs llc mark-space ratio t 9 :t 10 45:55 55:45 % duty cycle data and control outputs 2 data output transition time sdr (sdp) t 11 end of valid data to negative clock edge 2.9 4.6 ns data output transition time sdr (sdp) t 12 negative clock edge to start of valid data 0.2 0.6 ns data output transition time sdr (cp) t 13 end of valid data to negative clock edge 1.5 2.2 ns data output transition time sdr (cp) t 14 negative clock edge to start of valid data 0.1 0.3 ns i 2 s port, master mode sclk mark-space ratio t 15 :t 16 45:55 55:45 % duty cycle lrclk data transition time t 17 end of valid data to negative sclk edge 10 ns lrclk data transition time t 18 negative sclk edge to start of valid data 10 ns i2sx data transition time t 19 end of valid data to negative sclk edge 5 ns i2sx data transition time t 20 negative sclk edge to start of valid data 5 ns 1 guaranteed by characterization. 2 with the dll block on output clock bypassed.
data sheet adv7844 rev. b | page 11 of 32 timing diagrams 0 8850-003 sda scl t 5 t 3 t 4 t 8 t 6 t 7 t 2 t 1 t 3 figure 3. i 2 c timing 08850-004 t 9 llc p0 to p35, hs/cs, vs/field, field/de t 11 t 12 t 10 figure 4. pixel port and control sdr output timing (sdp) 08850-005 t 9 llc p0 to p35, hs/cs, vs/field, field/de t 13 t 14 t 10 figure 5. pixel port and control sdr output timing (cp) sclk lrclk i2sx left-justified mode i2sx right-justified mode i2sx i 2 s mode msb msb ? 1 t 15 t 16 t 17 t 19 t 20 t 18 msb msb ? 1 lsb msb t 19 t 20 t 19 t 20 notes 1. the suffix x refers to 0, 1, 2, and 3 ending pin names. 2. lrclk is a signal accessible via ap5 pin. 3. i2sx are signals accessible via ap1 to ap4 pins. 08850-006 figure 6. i 2 s timing
adv7844 data sheet rev. b | page 12 of 32 absolute maximum ratings package thermal performance table 6. parameter rating avdd to gnd 2.2 v vdd to gnd 2.2 v pvdd to gnd 2.2 v dvddio to gnd 4.0 v vdd_sdram to gnd 4.0 v cvdd to gnd 2.2 v tvdd to gnd 4.0 v avdd to pvdd ?0.3 v to +0.3 v avdd to vdd ?0.3 v to +0.3 v tvdd to cvdd ?0.3 v to +2.2 v dvddio to vdd_sdram ?0.3 v to +3.3 v vdd_sdram to avdd ?0.3 v to +2 v vdd_sdram to vdd ?0.3 v to +2 v digital inputs voltage to gnd ?0.3 v to dvddio + 0.3 v digital outputs voltage to gnd ?0.3 v to dvddio + 0.3 v 5 v tolerant digital inputs to gnd 1 5.5 v analog inputs to gnd ?0.3 v to avdd + 0.3 v xtaln and xtalp to gnd ?0.3 v to pvdd + 0.3 v maximum junction temperature (t j max ) 125c storage temperature range ?65c to +150c infrared reflow soldering (20 sec) 260c to reduce power consumption when using the adv7844, the user is advised to turn off unused sections of the part. due to pcb metal variation, and therefore variation in pcb heat conductivity, the value of ja may differ for various pcbs. the most efficient measurement solution is obtained using the package surface temperature to estimate the die temperature because this eliminates the variance associated with the ja value. the maximum junction temperature (t j max ) of 125c must not be exceeded. the following equation calculates the junction tempera- ture using the measured package surface temperature and applies only when no heat sink is used on the device under test (dut): ( ) total jt s j wtt + = where: t s is the package surface temperature (c). jt = 0.7c/w for the 425-ball csp_bga. w total = ( pvdd i pvdd ) + (0.4 tvdd i tvdd ) + ( cvdd i cvdd ) + (avdd i avdd ) + (vdd i vdd ) + ( a dvddio i dvddio ) + ( vdd_sdram i vdd_sdram ) where 0.4 reflects the 40% of tvdd power that is dissipated on the part itself. a = 0.5 when the output pixel clock is >74 mhz. a = 0.75 when the output pixel clock is 74 mhz. 1 the following inputs are 3.3 v inputs but are 5 v tolerant: hs_in1/tri5, hs_in2/tri7, vs_in1/tri6, vs_in2/t ri8, ddca_scl, ddca_sda, ddcb_scl, ddcb_sda, ddcc_scl, ddcc_sda, ddcd_scl, and ddcd_sda. esd caution stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability.
data sheet adv7844 rev. b | page 13 of 32 pin configuration and fu nction descriptions 1234567891011121314151617181920212223 tvdd rxd_2? rxd_1? rxd_0? rxd_c? arc_2? tvdd rxc_2? rxc_1? rxc_0? rxc_c? nc tvdd rxb_2? rxb_1? rxb_0? rxb_c? arc_1? gnd tvdd rxd_2+ rxd_1+ rxd_0+ rxd_c+ arc_2+ tvdd rxc_2+ rxc_1+ rxc_0+ rxc_c+ nc tvdd rxb_2+ rxb_1+ rxb_0+ rxb_c+ arc_1+ gnd tvdd pwrdn1 hpa_d rxd_5v rxc_5v tvdd gnd gnd gnd gnd gnd gnd tvdd tvdd tvdd tvdd tvdd tvdd tvdd sync_out cec hpa_c rxb_5v hpa_b tvdd rxa_5v hpa_a ddcd_sdaddcd_sclddcc_sdaddcc_scl rterm ddcb_sdaddcb_scl tvdd rxa_2+ rxa_2? gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd vdd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd vdd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd vdd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd vdd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd vdd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd vdd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd vdd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd vdd vdd vdd vdd vdd vdd vdd vdd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd cvdd cvdd cvdd gnd gnd gnd gnd test1 test2 gnd gnd cvdd cvdd cvdd avdd avdd avdd avdd tri1 tri2 sync3 ain7 tri4 tri3 ain9 ain8 gnd gnd gnd gnd hs_in2/tri7 vs_in2/tri8 sync4 ain10 avdd avdd ain11 ain12 avdd avdd avdd avdd gnd gnd refn refp gnd gnd gnd gnd pvdd gnd xtaln xtalp pvdd test3 gnd gnd vga_sda cvdd nc nc vga_scl cvdd rxa_c+ rxa_c? ddca_scl cvdd rxa_0+ rxa_0? ddca_sda cvdd rxa_1+ rxa_1? gnd dvddio sdram_a7 sdram_a3 sdram_a10 sdram_ba0 sdram_we vdd_sdram sdram_dq3 sdram_vref sdram_dq14 sdram_dq10 sdram_udqs vdd_sdram gndain1ain2ain3gnd gnd dvddio sdram_a8 sdram_a4 sdram_a0 sdram_ba1 sdram_cas vdd_sdram sdram_dq4 sdram_dq0 sdram_dq13 sdram_dq9 sdram_ck vdd_sdram gnd sync1 hs_in1/tri5 08850-007 vs_in1/tri6 gnd gnd vdd_sdram sdram_a9 sdram_a5 sdram_a1 sdram_ras sdram_dq7 gnd sdram_dq5 sdram_dq1 sdram_dq12 sdram_dq8 sdram_ck vdd_sdram gnd nc nc sync2 ain4 gnd hs/cs p0 p2 gnd p31 p29 p27 p25 llc dvddio p22 p20 p18 p17 p15 dvddio p13 p11 p9 p7 p5 dvddio a b c d ac ab aa y w v u t r p n m l k j h g f e a b c d ac ab aa y w v u t r p n m l k j h g f e vs/field field/de p1 p3 p33 p32 p30 p28 p26 p24 dvddio p23 p21 p19 p16 p14 dvddio p12 p10 p8 p6 p4 dvddio test6 test8 test10 test12 p35 p34 gnd gnd nc reset dvddio test5 test4 scl ap2 ap4 gnd ap5 mclk ttx_sda ep_cs ep_miso gnd test7 test9 test11 test14 test13 nc nc gnd gnd spdif_in avlink dvddio int2 int1 sda ap1 ap3 gnd sclk ap0 ttx_scl ep_sck ep_mosi gnd gnd vdd_sdram sdram_a11 sdram_a6 sdram_a2 sdram_cs sdram_ldqs gnd sdram_dq6 sdram_dq2 sdram_dq15 sdram_dq11 sdram_cke vdd_sdram gnd aout nc ain5 ain6 1234567891011121314151617181920212223 figure 7. pin configuration
adv7844 data sheet rev. b | page 14 of 32 table 7. pin function descriptions pin no. mnemonic type description a1 gnd ground ground. a2 vs/field digital video output vertical synchronization output signal (vs). field synchronization output signal in all interlaced video modes (field). vs or field can be configured for this pin. a3 test6 test pin float this pin. a4 test7 test pin float this pin. a5 tvdd power terminator supply voltage (3.3 v). a6 rxd_2? hdmi input digital input channel 2 co mplement of port d in the hdmi interface. a7 rxd_1? hdmi input digital input channel 1 co mplement of port d in the hdmi interface. a8 rxd_0? hdmi input digital input channel 0 co mplement of port d in the hdmi interface. a9 rxd_c? hdmi input digital input clock comp lement of port d in the hdmi interface. a10 arc_2? hdmi input/output audio return cha nnel (arc) complement in arc interface 2. a11 tvdd power terminator supply voltage (3.3 v). a12 rxc_2? hdmi input digital input channel 2 co mplement of port c in the hdmi interface. a13 rxc_1? hdmi input digital input channel 1 co mplement of port c in the hdmi interface. a14 rxc_0? hdmi input digital input channel 0 co mplement of port c in the hdmi interface. a15 rxc_c? hdmi input digital input clock comp lement of port c in the hdmi interface. a16 nc no connect no connect. a17 tvdd power terminator supply voltage (3.3 v). a18 rxb_2? hdmi input digital input channel 2 co mplement of port b in the hdmi interface. a19 rxb_1? hdmi input digital input channel 1 co mplement of port b in the hdmi interface. a20 rxb_0? hdmi input digital input channel 0 co mplement of port b in the hdmi interface. a21 rxb_c? hdmi input digital input clock complement of port b in the hdmi interface. a22 arc_1? hdmi input/output audio return cha nnel (arc) complement in arc interface 1. a23 gnd ground ground. b1 hs/cs digital video output horizontal synchronization output signal (hs). composite synchronization signal (cs). cs is a single signal containing both horizontal and vertical synchronization pulses. hs or cs can be configured for this pin. b2 field/de miscellaneous digital field synchronization output signal in all interlaced video modes (field). data enable (de). de is a signal that indicates active pixel data. de or field can be configured for this pin. b3 test8 test pin float this pin. b4 test9 test pin float this pin. b5 tvdd power terminator supply voltage (3.3 v). b6 rxd_2+ hdmi input digital input channel 2 true of port d in the hdmi interface. b7 rxd_1+ hdmi input digital input channel 1 true of port d in the hdmi interface. b8 rxd_0+ hdmi input digital input channel 0 true of port d in the hdmi interface. b9 rxd_c+ hdmi input digital input clock true of port d in the hdmi interface. b10 arc_2+ hdmi input/output audio return channel (arc) true in arc interface 2. b11 tvdd power terminator supply voltage (3.3 v). b12 rxc_2+ hdmi input digital input channel 2 true of port c in the hdmi interface. b13 rxc_1+ hdmi input digital input channel 1 true of port c in the hdmi interface. b14 rxc_0+ hdmi input digital input channel 0 true of port c in the hdmi interface. b15 rxc_c+ hdmi input digital input clock true of port c in the hdmi interface. b16 nc no connect no connect. b17 tvdd power terminator supply voltage (3.3 v). b18 rxb_2+ hdmi input digital input channel 2 true of port b in the hdmi interface. b19 rxb_1+ hdmi input digital input channel 1 true of port b in the hdmi interface. b20 rxb_0+ hdmi input digital input channel 0 true of port b in the hdmi interface. b21 rxb_c+ hdmi input digital input clock true of port b in the hdmi interface. b22 arc_1+ hdmi input/output audio return channel (arc) true in arc interface 1. b23 gnd ground ground.
data sheet adv7844 rev. b | page 15 of 32 pin no. mnemonic type description c1 p0 digital video output video pixel output port. c2 p1 digital video output video pixel output port. c3 test10 test pin float this pin. c4 test11 test pin float this pin. c5 tvdd power terminator supply voltage (3.3 v). c6 pwrdn1 miscellaneous digital controls the power-up of the adv7844. should be connected to a digital 3.3 v i/o supply to power up the adv7844. c7 test14 test pin tie this pin to ground via a 4.7 k resistor. c8 hpa_d miscellaneous digital hot plug assert signal output for hdmi port d. c9 rxd_5v hdmi input 5 v detect pin for port d in the hdmi interface. c10 rxc_5v hdmi input 5 v detect pin for port c in the hdmi interface. c11 tvdd power terminator supply voltage (3.3 v). c12 gnd ground ground. c13 gnd ground ground. c14 gnd ground ground. c15 gnd ground ground. c16 gnd ground ground. c17 gnd ground ground. c18 tvdd power terminator supply voltage (3.3 v). c19 tvdd power terminator supply voltage (3.3 v). c20 tvdd power terminator supply voltage (3.3 v). c21 tvdd power terminator supply voltage (3.3 v). c22 tvdd power terminator supply voltage (3.3 v). c23 tvdd power terminator supply voltage (3.3 v). d1 p2 digital video output video pixel output port. d2 p3 digital video output video pixel output port. d3 test12 test pin float this pin. d4 test13 test pin float this pin. d5 tvdd power terminator supply voltage (3.3 v). d6 sync_out miscellaneous digital sliced synchronization output. d7 cec digital input/output consum er electronic control channel. d8 hpa_c miscellaneous digital hot plug assert signal output for hdmi port c. d9 rxb_5v hdmi input 5 v detect pin for port b in the hdmi interface. d10 hpa_b miscellaneous digital hot plug assert signal output for hdmi port b. d11 tvdd power terminator supply voltage (3.3 v). d12 rxa_5v hdmi input 5 v detect pin for port a in the hdmi interface. d13 hpa_a miscellaneous digital hot plug assert signal output for hdmi port a. d14 ddcd_sda digital input/output hdcp slav e serial data port d. ddcd_sda is a 3. 3 v input/output that is 5 v tolerant. d15 ddcd_scl digital input hdcp slave serial clock port d. ddcd_scl is a 3.3 v input that is 5 v tolerant. d16 ddcc_sda digital input/output hdcp slav e serial data port c. ddcc_sda is a 3. 3 v input/output that is 5 v tolerant. d17 ddcc_scl digital input hdcp slave serial clock port c. ddcc_scl is a 3.3 v input that is 5 v tolerant. d18 rterm miscellaneous analog sets internal termination resistance. a 500 resistor between this pin and gnd should be used. d19 ddcb_sda digital input/output hdcp slav e serial data port b. ddcb_sda is a 3. 3 v input/output that is 5 v tolerant. d20 ddcb_scl digital input hdcp slave serial clock port b. ddcb_scl is a 3.3 v input that is 5 v tolerant. d21 tvdd power terminator supply voltage (3.3 v). d22 rxa_2+ hdmi input digital input channel 2 true of port a in the hdmi interface. d23 rxa_2? hdmi input digital input channel 2 co mplement of port a in the hdmi interface. e1 dvddio power digital i/o supply voltage (3.3 v). e2 dvddio power digital i/o supply voltage (3.3 v). e3 gnd ground ground. e4 gnd ground ground. e20 ddca_sda digital input/output hdcp slav e serial data port a. ddca_sda is a 3. 3 v input/output that is 5 v tolerant. e21 cvdd power comparator supply voltage (1.8 v).
adv7844 data sheet rev. b | page 16 of 32 pin no. mnemonic type description e22 rxa_1+ hdmi input digital input channel 1 true of port a in the hdmi interface. e23 rxa_1? hdmi input digital input channel 1 co mplement of port a in the hdmi interface. f1 p5 digital video output video pixel output port. f2 p4 digital video output video pixel output port. f3 ep_miso digital output spi master in/slave out for external edid interface. f4 ep_mosi digital input spi master out/slave in for external edid interface. f20 ddca_scl digital input hdcp slave serial clock port a. ddca_scl is a 3.3 v input that is 5 v tolerant. f21 cvdd power comparator supply voltage (1.8 v). f22 rxa_0+ hdmi input digital input channel 0 true of port a in the hdmi interface. f23 rxa_0? hdmi input digital input channel 0 co mplement of port a in the hdmi interface. g1 p7 digital video output video pixel output port. g2 p6 digital video output video pixel output port. g3 ep_cs digital output spi chip select for external edid interface. g4 ep_sck digital output spi clock for external edid interface. g7 gnd ground ground. g8 gnd ground ground. g9 gnd ground ground. g10 gnd ground ground. g11 test1 test do not connect. g12 test2 test do not connect. g13 gnd ground ground. g14 gnd ground ground. g15 cvdd power comparator supply voltage (1.8 v). g16 cvdd power comparator supply voltage (1.8 v). g17 cvdd power comparator supply voltage (1.8 v). g20 vga_scl miscellaneous digital ddc port serial clock input for vga. g21 cvdd power comparator supply voltage (1.8 v). g22 rxa_c+ hdmi input digital input clock true of port a in the hdmi interface. g23 rxa_c? hdmi input digital input clock comp lement of port a in the hdmi interface. h1 p9 digital video output video pixel output port. h2 p8 digital video output video pixel output port. h3 ttx_sda miscellaneous digital i 2 c port serial data input/output. sda is the data line for the teletext port. h4 ttx_scl miscellaneous digital i 2 c port serial clock input. scl is the clock line for the teletext port. h7 gnd ground ground. h8 gnd ground ground. h9 gnd ground ground. h10 gnd ground ground. h11 gnd ground ground. h12 gnd ground ground. h13 gnd ground ground. h14 gnd ground ground. h15 cvdd power comparator supply voltage (1.8 v). h16 cvdd power comparator supply voltage (1.8 v). h17 cvdd power comparator supply voltage (1.8 v). h20 vga_sda miscellaneous digital ddc port serial data input/output for vga. h21 cvdd power comparator supply voltage (1.8 v). h22 nc no connect no connect. h23 nc no connect no connect. j1 p11 digital video output video pixel output port. j2 p10 digital video output video pixel output port. j3 mclk miscellaneous audio master clock output. j4 ap0 miscellaneous audio output. j7 gnd ground ground.
data sheet adv7844 rev. b | page 17 of 32 pin no. mnemonic type description j8 gnd ground ground. j9 gnd ground ground. j10 gnd ground ground. j11 gnd ground ground. j12 gnd ground ground. j13 gnd ground ground. j14 gnd ground ground. j15 gnd ground ground. j16 gnd ground ground. j17 gnd ground ground. j20 pvdd power pll supply voltage (1.8 v). j21 test3 test do not connect. j22 gnd ground ground. j23 gnd ground ground. k1 p13 digital video output video pixel output port. k2 p12 digital video output video pixel output port. k3 ap5 miscellaneous audio output. k4 sclk miscellaneous digital audio serial clock output. k7 vdd power digital core supply voltage (1.8 v). k8 gnd ground ground. k9 gnd ground ground. k10 gnd ground ground. k11 gnd ground ground. k12 gnd ground ground. k13 gnd ground ground. k14 gnd ground ground. k15 gnd ground ground. k16 gnd ground ground. k17 gnd ground ground. k20 pvdd power pll supply voltage (1.8 v). k21 gnd ground ground. k22 xtaln miscellaneous analog input pin for 28.63636 mhz crystal. k23 xtalp miscellaneous analog input pin for 28.63636 mhz crystal or an external 1.8 v, 28.63636 mhz clock oscillator source to clock the adv7844. l1 dvddio power digital i/o supply voltage (3.3 v). l2 dvddio power digital i/o supply voltage (3.3 v). l3 gnd ground ground. l4 gnd ground ground. l7 vdd power digital core supply voltage (1.8 v). l8 gnd ground ground. l9 gnd ground ground. l10 gnd ground ground. l11 gnd ground ground. l12 gnd ground ground. l13 gnd ground ground. l14 gnd ground ground. l15 gnd ground ground. l16 gnd ground ground. l17 gnd ground ground. l20 gnd ground ground. l21 gnd ground ground. l22 gnd ground ground. l23 gnd ground ground.
adv7844 data sheet rev. b | page 18 of 32 pin no. mnemonic type description m1 p15 digital video output video pixel output port. m2 p14 digital video output video pixel output port. m3 ap4 miscellaneous audio output. m4 ap3 miscellaneous audio output. m7 vdd power digital core supply voltage (1.8 v). m8 gnd ground ground. m9 gnd ground ground. m10 gnd ground ground. m11 gnd ground ground. m12 gnd ground ground. m13 gnd ground ground. m14 gnd ground ground. m15 gnd ground ground. m16 gnd ground ground. m17 gnd ground ground. m20 gnd ground ground. m21 gnd ground ground. m22 refn miscellaneous analog internal voltage reference output. m23 refp miscellaneous analog internal voltage reference output. n1 p17 digital video output video pixel output port. n2 p16 digital video output video pixel output port. n3 ap2 miscellaneous audio output. n4 ap1 miscellaneous audio output. n7 vdd power digital core supply voltage (1.8 v). n8 gnd ground ground. n9 gnd ground ground. n10 gnd ground ground. n11 gnd ground ground. n12 gnd ground ground. n13 gnd ground ground. n14 gnd ground ground. n15 gnd ground ground. n16 gnd ground ground. n17 gnd ground ground. n20 avdd power analog supply voltage (1.8 v). n21 avdd power analog supply voltage (1.8 v). n22 avdd power analog supply voltage (1.8 v). n23 avdd power analog supply voltage (1.8 v). p1 p18 digital video output video pixel output port. p2 p19 digital video output video pixel output port. p3 scl miscellaneous digital i 2 c port serial clock input. scl is the clock line for the control port. p4 sda miscellaneous digital i 2 c port serial data input/output. sda is the data line for the control port. p7 vdd power digital core supply voltage (1.8 v). p8 gnd ground ground. p9 gnd ground ground. p10 gnd ground ground. p11 gnd ground ground. p12 gnd ground ground. p13 gnd ground ground. p14 gnd ground ground. p15 gnd ground ground. p16 gnd ground ground. p17 gnd ground ground.
data sheet adv7844 rev. b | page 19 of 32 pin no. mnemonic type description p20 avdd power analog supply voltage (1.8 v). p21 avdd power analog supply voltage (1.8 v). p22 ain11 analog video input analog video input channel. p23 ain12 analog video input analog video input channel. r1 p20 digital video output video pixel output port. r2 p21 digital video output video pixel output port. r3 test4 test this pin should be tied to ground. r4 int1 miscellaneous digital interrupt. this pin can be active low or acti ve high. when status bits change, this pin is triggered. the events that trigger an interrupt are under user control. r7 vdd power digital core supply voltage (1.8 v). r8 gnd ground ground. r9 gnd ground ground. r10 gnd ground ground. r11 gnd ground ground. r12 gnd ground ground. r13 gnd ground ground. r14 gnd ground ground. r15 gnd ground ground. r16 gnd ground ground. r17 gnd ground ground. r20 hs_in2/tri7 miscellaneous analog hs on graphics port 2 (hs_in2). the hs in put signal is used for 5-wire timing mode. trilevel/bilevel input on the scart or d-terminal connector (tri7). (selection available via the i 2 c.) r21 vs_in2/tri8 miscellaneous analog vs on graphics port 2 (vs_in2). the vs input signal is used for 5-wire timing mode. trilevel/bilevel input on the scart or d-terminal connector (tri8). (selection available via the i 2 c.) r22 sync4 miscellaneous analog this is a synchronization on green or luma input (sog/soy) used in embedded synchronization mode. user configurable. r23 ain10 analog video input analog video input channel. t1 p22 digital video output video pixel output port. t2 p23 digital video output video pixel output port. t3 test5 test do not connect. t4 int2 miscellaneous digital interrupt. this pin can be active low or acti ve high. when status bits change, this pin is triggered. the events that trigger an interrupt are under user control. t7 vdd power digital core supply voltage (1.8 v). t8 gnd ground ground. t9 gnd ground ground. t10 gnd ground ground. t11 gnd ground ground. t12 gnd ground ground. t13 gnd ground ground. t14 gnd ground ground. t15 gnd ground ground. t16 gnd ground ground. t17 gnd ground ground. t20 gnd ground ground. t21 gnd ground ground. t22 gnd ground ground. t23 gnd ground ground. u1 dvddio power digital i/o supply voltage (3.3 v). u2 dvddio power digital i/o supply voltage (3.3 v). u3 dvddio power digital i/o supply voltage (3.3 v). u4 dvddio power digital i/o supply voltage (3.3 v). u7 vdd power digital core supply voltage (1.8 v).
adv7844 data sheet rev. b | page 20 of 32 pin no. mnemonic type description u8 vdd power digital core supply voltage (1.8 v). u9 vdd power digital core supply voltage (1.8 v). u10 vdd power digital core supply voltage (1.8 v). u11 vdd power digital core supply voltage (1.8 v). u12 vdd power digital core supply voltage (1.8 v). u13 vdd power digital core supply voltage (1.8 v). u14 vdd power digital core supply voltage (1.8 v). u15 gnd ground ground. u16 gnd ground ground. u17 gnd ground ground. u20 tri4 miscellaneous analog trilevel or bilevel input on the scart or d-type connector. (selection available via the i 2 c.) u21 tri3 miscellaneous analog trilevel or bilevel input on the scart or d-type connector. (selection available via the i 2 c.) u22 ain9 analog video input analog video input channel. u23 ain8 analog video input analog video input channel. v1 llc digital video output line-locked output clock for the pixel data. v2 p24 digital video output video pixel output port. v3 reset miscellaneous digital system reset input. active low. a minimum low reset pulse width of 5 ms is required to reset the adv7844 circuitry. v4 avlink digital input/output digital scart control channel. v20 tri1 miscellaneous analog trilevel or bilevel input on the scart or d-type connector. (selection available via the i 2 c.) v21 tri2 miscellaneous analog trilevel or bilevel input on the scart or d-type connector. (selection available via the i 2 c.) v22 sync3 miscellaneous analog this is a synchronization on green or luma input (sog/soy) used in embedded synchronization mode. user configurable. v23 ain7 analog video input analog video input channel. w1 p25 digital video output video pixel output port. w2 p26 digital video output video pixel output port. w3 nc no connect no connect. w4 spdif_in miscellaneous digital s/pdif stream input. w20 avdd power analog supply voltage (1.8 v). w21 avdd power analog supply voltage (1.8 v). w22 avdd power analog supply voltage (1.8 v). w23 avdd power analog supply voltage (1.8 v). y1 p27 digital video output video pixel output port. y2 p28 digital video output video pixel output port. y3 gnd ground ground. y4 gnd ground ground. y5 gnd ground ground. y6 vdd_sdram power external memory interface digital input/output supply (ddr 2.5 v or sdr 3.3 v). y7 sdram_a11 sdram interface address output. interface to external ram address lines. y8 sdram_a6 sdram interface address output. interface to external ram address lines. y9 sdram_a2 sdram interface address output. interface to external ram address lines. y10 sdram_cs sdram interface chip select. sdram_cs enables and disables the command decoder on the ram. one of four command signals to the external sdram. y11 sdram_ldqs sdram interface lower data strobe pin. data strobe pins are used for the ram interface. this is an input when reading data from external me mory and output when writing data to external memory. it is edge-aligned when reading from external memory and centered with data when reading to external memory. sdram_ ldqs corresponds to the data on sdram_dq7 to sdram_dq0. y12 gnd ground ground. y13 sdram_dq6 sdram interface data bus. interface to external ram 16-bit data bus. y14 sdram_dq2 sdram interface data bus. interface to external ram 16-bit data bus.
data sheet adv7844 rev. b | page 21 of 32 pin no. mnemonic type description y15 sdram_dq15 sdram interface data bus. interface to external ram 16-bit data bus. y16 sdram_dq11 sdram interface data bus. interface to external ram 16-bit data bus. y17 sdram_cke sdram interface clock enable. this pin acts as an enable to the clock signals of the external ram. y18 vdd_sdram power external memory interface digital input/output supply (ddr 2.5 v or sdr 3.3 v). y19 gnd ground ground. y20 aout analog monitor o utput analog monitor output. y21 nc no connect no connect. y22 ain5 analog video input analog video input channel. y23 ain6 analog video input analog video input channel. aa1 p29 digital video output video pixel output port. aa2 p30 digital video output video pixel output port. aa3 gnd ground ground. aa4 gnd ground ground. aa5 gnd ground ground. aa6 vdd_sdram power external memory interface digital input/output supply (ddr 2.5 v or sdr 3.3 v). aa7 sdram_a9 sdram interface address output. interface to external ram address lines. aa8 sdram_a5 sdram interface address output. interface to external ram address lines. aa9 sdram_a1 sdram interface address output. interface to external ram address lines. aa10 sdram_ras sdram interface row address select command signal. one of four command signals to the external sdram. aa11 sdram_dq7 sdram interface data bus. interface to external ram 16-bit data bus. aa12 gnd ground ground. aa13 sdram_dq5 sdram interface data bus. interface to external ram 16-bit data bus. aa14 sdram_dq1 sdram interface data bus. interface to external ram 16-bit data bus. aa15 sdram_dq12 sdram interface data bus. interface to external ram 16-bit data bus. aa16 sdram_dq8 sdram interface data bus. interface to external ram 16-bit data bus. aa17 sdram_ck sdram interface differential clock output. all address and control output signals to the ram should be sampled on the positive edge of sdram_ck and on the negative edge of sdram_ck . aa18 vdd_sdram power external memory interface digital input/output supply (ddr 2.5 v or sdr 3.3 v). aa19 gnd ground ground. aa20 nc no connect no connect. aa21 nc no connect no connect. aa22 sync2 miscellaneous analog this is a synchronization on green or luma input (sog/soy) used in embedded synchronization mode. user configurable. aa23 ain4 analog video input analog video input channel. ab1 p31 digital video output video pixel output port. ab2 p32 digital video output video pixel output port. ab3 p34 digital video output video pixel output port. ab4 nc no connect no connect. ab5 gnd ground ground. ab6 dvddio power digital i/o supply voltage (3.3 v). ab7 sdram_a8 sdram interface address output. interface to external ram address lines. ab8 sdram_a4 sdram interface address output. interface to external ram address lines. ab9 sdram_a0 sdram interface address output. interface to external ram address lines. ab10 sdram_ba1 sdram interface bank address output. interface to external ram bank address lines. ab11 sdram_cas sdram interface column address select command signal. one of four command signals to the external sdram. ab12 vdd_sdram power external memory interface digi tal input/output supply (ddr 2.5 v or sdr 3.3 v). ab13 sdram_dq4 sdram interface data bus. interface to external ram 16-bit data bus. ab14 sdram_dq0 sdram interface data bus. interface to external ram 16-bit data bus. ab15 sdram_dq13 sdram interface data bus. interface to external ram 16-bit data bus. ab16 sdram_dq9 sdram interface data bus. interface to external ram 16-bit data bus.
adv7844 data sheet rev. b | page 22 of 32 pin no. mnemonic type description ab17 sdram_ck sdram interface differential clock output. all address and control output signals to the ram should be sampled on the positive edge of sdram_ck and on the negative edge of sdram_ck . ab18 vdd_sdram power external memory interface digi tal input/output supply (ddr 2.5 v or sdr 3.3 v). ab19 gnd ground ground. ab20 sync1 miscellaneous analog this is a synchronization on green or luma input (sog/soy) used in embedded synchronization mode. user configurable. ab21 hs_in1/tri5 miscellaneous analog hs on graphics port 1 (hs_in1). the hs in put signal is used for 5-wire timing mode. trilevel/bilevel input on the scart or d-terminal connector (tri5). (selection available via the i 2 c.) ab22 vs_in1/tri6 miscellaneous analog vs on graphics port 1 (vs_in2). the vs input signal is used for 5-wire timing mode. trilevel/bilevel input on the scart or d-terminal connector (tri6). (selection available via the i 2 c.) ab23 gnd ground ground. ac1 gnd ground ground. ac2 p33 digital video output video pixel output port. ac3 p35 digital video output video pixel output port. ac4 nc no connect no connect. ac5 gnd ground ground. ac6 dvddio power digital i/o supply voltage (3.3 v). ac7 sdram_a7 sdram interface address output. interface to external ram address lines. ac8 sdram_a3 sdram interface address output. interface to external ram address lines. ac9 sdram_a10 sdram interface address output. interface to external ram address lines. ac10 sdram_ba0 sdram interface bank address output. interface to external ram bank address lines. ac11 sdram_we sdram interface write enable output command signal. one of four command signals to the external sdram. ac12 vdd_sdram power external memory interface digital input/output supply (ddr 2.5 v or sdr 3.3 v). ac13 sdram_dq3 sdram interface data bus. interface to external ram 16-bit data bus. ac14 sdram_vref sdram interface 1.25 v reference for ddr sdram interface or 1.65 v for sdr. ac15 sdram_dq14 sdram interface data bus. interface to external ram 16-bit data bus. ac16 sdram_dq10 sdram interface data bus. interface to external ram 16-bit data bus. ac17 sdram_udqs sdram interface upper data strobe pin. data strobe pins ar e used for the ram interface. this is an input when reading data from external me mory and an output when writing data to external memory. it is edge-aligned with data when reading from external memory and centered with data when writing to external memory. sdram_udqs corresponds to the data on sdram_dq15 to sdram_dq8. ac18 vdd_sdram power external memory interface digital input/output supply (ddr 2.5 v or sdr 3.3 v). ac19 gnd ground ground. ac20 ain1 analog video input analog video input channel. ac21 ain2 analog video input analog video input channel. ac22 ain3 analog video input analog video input channel. ac23 gnd ground ground.
data sheet adv7844 rev. b | page 23 of 32 power supply sequencing power-up sequence the recommended power-up sequence of the adv7844 is as follows: 1. 3.3 v supplies 2. 2.5 v supply (applies only if using ddr memory) 3. 1.8 v supplies 08850-009 3.3v supplies power-up power supply (v) 3.3v supplies 1.8v supplies 2.5v supplies (if any) 2.5v supplies power-up 1.8v supplies power-up 3.3v 2.5v 1.8v figure 8. recommended power-up sequence notes reset should be held low while the supplies are being powered up. ? 3.3 v supplies should be powered up first. ? 2.5 v supply should be powered after the 3.3 v supplies are established but before the 1.8 v supplies. ? 1.8 v supplies should be powered up last. the adv7844 can alternatively be powered up by asserting all supplies simultaneously. in this case, care must be taken to ensure that a lower rated supply does not go above a higher rated supply level, as the supplies are being established. power-down sequence the adv7844 supplies can be deasserted simultaneously as long as a higher rated supply does not go below a lower rated supply.
adv7844 data sheet rev. b | page 24 of 32 functional overview hdmi receiver the adv7844 front end incorporates a 4:1 multiplexed hdmi receiver with xpressview fast switching technology and support for hdmi features including arc and 3d tv. building on the feature set of analog devices existing hdmi devices, the adv7844 also offers support for all hd tv formats up to 12- bit, 1080p deep color and all display resolutions up to uxga (1600 1200 at 60 hz). xpressview fast switching technology, using analog devices hardware-based hdcp engine that minimizes software overhead, allows switching between any two input ports in less than 1 second. with the inclusion of hdcp 1.4, the adv7844 can receive encrypted video content. the hdmi interface of the adv7844 allows for authentication of a video receiver, decryption of encoded data at the receiver, and renewal of that authentication during transmission, as specified by the hdcp 1.4 protocol. repeater support is also offered by the adv7844. the adv7844 supports the audio return channel feature. there is a dedicated s/pdif input on which audio can be received for retransmission on the hdmi input. a wide range of 3d video formats is supported, including frame packing 1080p 24 hz, 720p 50 hz, and 720p 60 hz. the hdmi receiver incorporates active equalization of the hdmi data signals. this equalization compensates for the high frequency losses inherent in hdmi and dvi cabling, especially at longer lengths and higher frequencies. it is capable of equalizing for cable lengths up to 30 meters to achieve robust receiver performance at even the highest hdmi data rates. the hdmi receiver offers advanced audio functionality. it supports multichannel i 2 s audio for up to eight channels. it also supports a 6-dsd channel interface with each channel carrying an oversampled 1-bit representation of the audio signal as delivered on sacd. the adv7844 can also receive hbr audio packet streams and outputs them through the hbr interface in an s/pdif format conforming to the iec60958 standard. the receiver contains an audio mute controller that can detect a variety of conditions that may result in audible extraneous noise in the audio output. on detection of these conditions, the audio signal can be ramped to mute to prevent audio clicks or pops. hdmi receiver features include: ? 4:1 multiplexed hdmi receiver ? hdmi, arc, and 3d format support, dvi 1.0 ? 225 mhz hdmi receiver ? integrated equalizer ? high-bandwidth digital content protection (hdcp 1.4) on background ports ? internal hdcp keys ? 36-/30-bit deep color support ? pcm, hbr, and dsd audio packet support ? repeater support ? internal e-edid ram ? hot plug assert output pin for each hdmi port ? cec controller analog front end the adv7844 analog front end comprises four 170 mhz, 12-bit adcs that digitize the analog video signal before applying it to the standard definition processor (sdp) or component processor (cp). the analog front end uses differential channels to each adc to ensure high performance in a mixed-signal application. the front end also includes a 12-channel input mux that enables multiple video signals to be applied to the adv7844 without the requirement of an external mux. current and voltage clamp control loops ensure that any dc offsets are removed from the video signal. the clamps are positioned in front of each adc to ensure that the video signal remains within the range of the converter. the adcs are configured to run up to 8 oversampling mode when decoding composite or s-video inputs. for component 525i, 625i, 525p, and 625p sources, 4 oversampling is performed. all other video standards are 1 oversampled. oversampling the video signals reduces the cost and complexity of external antialiasing filters with the benefit of an increased signal-to- noise ratio (snr). optional internal antialiasing filters with programmable bandwidth are positioned in front of each adc. these filters can be used to band limit video signals, removing spurious, out- of-band noise. the adv7844 can support the simultaneous processing of cvbs and rgb standard definition signals to enable scart compatibility and overlay functionality. a combination of cvbs and rgb inputs can be mixed with the output under the control of i 2 c registers. analog front-end features include: ? four 170 mhz, nsv, 12-bit adcs that enable true 12-bit video decoding ? 12-channel analog input mux that enables multiple source connections without the requirement of an external mux ? four current and voltage clamp control loops that ensure any dc offsets are removed from the video signal ? scart functionality and sd rgb overlay on cvbs controlled by fast blank input ? scart source switching detection through the tri1 to tri8 inputs ? four programmable antialiasing filters
data sheet adv7844 rev. b | page 25 of 32 standard definition processor the sdp is capable of decoding a large selection of baseband video signals in composite and s-video formats. the video standards supported by the sdp include pal, pal 60, pal m, pal n, pal nc, ntsc m/j, ntsc 4.43, and secam. the adv7844 can automatically dete ct the video standard and process it accordingly. the sdp has a 3d temporal comb filter and a five-line adaptive 2d comb filter that gives superior chrominance and luminance separation when decoding a composite video signal. this highly adaptive filter automatically adjusts its processing mode according to the video standard and signal quality with no user intervention required. the sdp has an if filter block that compensates for attenuation in the high frequency chroma spectrum due to a tuner saw filter. the sdp has specific luminance and chrominance parameter controls for brightness, contrast, saturation, and hue. the adv7844 implements a patented adaptive digital line length tracking (adllt?) algorithm to track varying video line lengths from sources such as a vcr. adllt enables the adv7844 to track and decode poor quality video sources (such as vcrs) and noisy sources (such as tuner outputs, vcr players, and camcorders). frame tbc ensures stable clock synchronization between the decoder and the downstream devices. the sdp also contains both a luma transient improvement (lti) block and a chroma transient improvement (cti) block. these increase the edge rate on the luma and chroma transitions, resulting in a sharper video image. the sdp has a macrovision? detection circuit that allows type i, type ii, and type iii macrovision protection levels. the decoder is also fully robust to all macrovision signal inputs. sdp features include: ? advanced adaptive 3d comb (using either external ddr or sdr sdram memory) ? adaptive 2d five-line comb filters for ntsc and pal that give superior chrominance and luminance separation for composite video ? full automatic detection and autoswitching of all worldwide standards (pal, ntsc, and secam) ? automatic gain control with white peak mode that ensures the video is always processed without loss of the video processing range ? proprietary architecture for locking to weak, noisy, and unstable sources from vcrs and tuners ? if filter block that compensates for high frequency luma attenuation due to tuner saw filter ? lti and cti ? vertical and horizontal programmable luma peaking filters ? 8 oversampling (108 mhz) for cvbs, and s-video modes ? line-locked clock (llc) output ? free-run output mode that provides stable timing when no video input is present or video lock is lost ? internal color bar test pattern ? advanced tbc with frame synchronization, which ensures nominal clock and data for nonstandard input ? interlace-to-progressive conversion for 525i and 625i formats, enabling direct drive of hdmi tx devices ? color controls that include hue, brightness, saturation, and contrast component processor the cp section of the adv7844 is capable of decoding and digitizing a wide range of component video formats in any color space. component video standards supported by the cp are 525i, 625i, 525p, 625p, 720p, 1080i, 1080p, 1250i, vga up to uxga at 60 hz, and many other standards. the any-to-any, 3 3 csc matrix is placed between the analog front end and the cp section. this enables ypbpr to rgb and rgb to ycbcr conversions. many other standards of color space can be implemented using the color space converter. the cp section contains circuitry to enable the detection of macrovision encoded ypbpr signals for 525i, 625i, 525p, and 625p. it is designed to be fully robust when decoding these types of signals. vbi extraction of cgms data is performed by the cp section of the adv7844 for interlaced, progressive, and high definition scanning rates. the data extracted can be read back over the i 2 c interface. cp features include: ? 525i, 625i, 525p, 625p, 720p, 1080i, 1080p, and many other hdtv formats are supported ? supports 720p 24 hz/25 hz formats ? manual adjustments including gain (contrast), offset (brightness), hue, and saturation ? support for analog component ypbpr and rgb video formats with embedded synchronization, composite synchronization or separate hs and vs ? any-to-any, 3 3 csc matrix that supports ycbcr-to- rgb and rgb-to- ycbcr, fully programmable or preprogrammable configurations ? synchronization source polarity detector (sspd) that determines the source and polarity of the synchronization signals that accompany the input video ? macrovision copy protection detection on component formats (525i, 625i, 525p, and 625p) ? free-run output mode that provides stable timing when no video input is present or video lock is lost ? arbitrary pixel sampling support for nonstandard video sources ? 170 mhz conversion rate, which supports rgb input resolutions up to 1600 1200 at 60 hz ? automatic or manual clamp-and-gain controls for graphics modes ? contrast, brightness, hue, and saturation controls
adv7844 data sheet rev. b | page 26 of 32 ? 32-phase adc dll that allows optimum pixel clock sampling ? automatic detection of synchronization source and polarity by sspd block ? standard identification enabled by stdi block ? rgb that can be color space converted to ycbcr and decimated to a 4:2:2 format for video-centric back-end ic interfacing ? data enable (de) output signal supplied for direct connection to hdmi/dvi tx ic other features the adv7844 has hs, vs, field, and de output signals with programmable position, polarity, and width, and two i 2 c host port interfaces (control and vbi). the adv7844 has two programmable interrupt request output pins, int1 and int2. it also features a number of low power modes and a full power-down mode. the adv7844 is provided in a 19 mm 19 mm, rohs-compliant csp_bga package, and is specified over the 0c to +70c temperature range. for more detailed product information about the adv7844, contact your local analog devices sales office.
data sheet adv7844 rev. b | page 27 of 32 external memory requirements the adv7844 uses external sd ram for 3d comb and frame synchronizer. the adv7844 supports either sdr or ddr sd ram. single data rate (sdr) the adv7844 can use sdr external memory to provide 3d comb or frame synchronizer operation nonconcurrently. there is a 64 mb sdr sdram minimum memory require- ment. the required memory architecture is four banks of 1 mb 16 (4m16) with a speed grade of 133 mhz at cas latency (cl) 3. using 22 series termination resistors is recom- mended for this configuration. recommended sdr memory that is compatible with the adv7844 includes winbond w9864g6ph-7. double data rate (ddr) the adv7844 can use ddr external memory to simultaneously provide 3d comb and frame synchronizer operation. there is a 128 mb ddr sdram minimum memory requirement. the required memory architecture is four banks of 2 mb 16 (8m16) with a speed grade of 133 mhz at cl 2.5. using 22 series termination resistors is recommended for this configuration recommended ddr memory that is compatible with the adv7844 includes the k4h561638j-lcb3 from samsung, the mt46v16m16p-6t from micron technology, inc., and the h5du1262gtr-e3c from hynix, inc.
adv7844 data sheet rev. b | page 28 of 32 pixel input/output formatting the output section of the adv7844 is highly flexible. the pixel output bus can support up to 36-bit 4:4:4. the pixel data supports both single and double data rates modes. in sdr mode, a 16-/20-/24-bit 4:2:2 or 24-/30-/36-bit 4:4:4 output is possible. in ddr mode, the pixel output port can be configured in 8-/10-/12-bit 4:2:2 modes or 24-/30-/36-bit 4:4:4 modes. bus rotation and bus inversion are also supported. all output modes are controlled via i 2 c controls. pixel data output modes features the output pixel port features include the following: ? 8-/10-/12-bit itu-r bt.656 4:2:2 with embedded time codes and/or hs, vs, and field output signals ? sdr 16-/20-/24-/30-/36 bit with embedded time codes and/or hs and vs/field pin timing ? ddr 8-/10-/12-bit 4:2:2 with embedded time codes and/or hs, vs, and field output signals ? ddr 24-/30-/36 bit 4:4:4 with embedded time codes and/or hs, vs, and field output signals note that ddr modes are supported up to 54 mhz by characterization.
data sheet adv7844 rev. b | page 29 of 32 register map architecture the registers of the adv7844 are controlled via a 2-wire serial (i 2 c-compatible) interface. the adv7844 has 12 maps. the io map has a static i 2 c address. all other map addresses must be programmed; this ensures no addressing clashes on the system. figure 9 shows the register map architecture. table 8. register map name default address programmable addr ess location at which address can be programmed io map 0x40 not programmable not applicable cp map 0x00 programmable io map, register 0xfd sdp map 0x00 programmable io map, register 0xf1 sdp_io map 0x00 programmable io map, register 0xf2 vdp map 0x00 programmable io map, register 0xfe avlink map 0x00 programmable io map, register 0xf3 cec map 0x00 programmable io map, register 0xf4 hdmi map 0x00 programmable io map, register 0xfb edid map 0x00 programmable io map, register 0xfa repeater map 0x00 programmable io map, register 0xf9 afe, dpll map 0x00 programmable io map, register 0xf8 infoframe map 0x00 programmable io map, register 0xf5 cec map slave address: programmable avlink map slave address: programmable vdp map slave address: programmable sdp_io map slave address: programmable sdp map slave address: programmable cp map slave address: programmable io map slave address: 0x40 infoframe map slave address: programmable afe, dpll map slave address: programmable repeater map slave address: programmable edid map slave address: programmable hdmi map slave address: programmable scl sda 08850-008 figure 9. register map architecture
adv7844 data sheet rev. b | page 30 of 32 outline dimensions a b c d e f g h j k l m n p r 15 17 14 13 12 11 10 9 8 7 6 5 4 3 2 1 17.60 bsc sq 16 19 21 18 20 23 22 t u v w y aa ab ac 0.65 nom 0.35 nom 1.50 1.36 1.21 1.11 1.01 0.91 compliant to jedec standards mo-275-ppab-2. 11-22-2011-a 0.50 0.45 0.40 19.20 19.00 sq 18.80 coplanarity 0.12 bottom view detail a top view 0.35 nom 0.30 min ball diameter seating plane a1 ball corner a1 ball corner detail a 0.80 bsc figure 10. 425-ball chip scale package ball grid array [csp_bga] (bc-425-1) dimensions shown in millimeters ordering guide model 1 notes temperature range package description package option adv7844kbcz-5 2 , 3 0c to +70c 425-ball chip scale package ball grid array [csp_bga] bc-425-1 EVAL-ADV7844EB1Z 3 , 4 , 5 0c to +70c front-end evaluation board 1 z = rohs-compliant part. 2 speed grade: 5 = 170 mhz. 3 this part is programmed with internal hdcp keys. customers must have hdcp adopter status (consult digital content protection, llc, for licensing requirements) to purchase any components with internal hdcp keys. 4 an atv motherboard is also required to process the adv7844 digital outputs and achi eve video output. an at v video output board is optional to evaluate performance through an hdmi transmitter and video encoder. 5 front-end board for the atv video evaluation platform, fitted with adv7844kbcz-5 decoder.
data sheet adv7844 rev. b | page 31 of 32 notes
adv7844 data sheet rev. b | page 32 of 32 notes i 2 c refers to a communications protocol originally developed by phillips semi conductors (now nxp semiconductors). hdmi, the hdmi logo, and high-definition multimedia interface are trademarks or registered trademarks of hdmi licensing llc in the united states and other countries. ?2012 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d08850-0-4/12(b)

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