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M65851FP
Single Chip Karaoke Processor
REJ03F0172-0201 Rev.2.01 Jan 25, 2008
Description
The M65851FP is an LSI that not only contains circuits (echo and key control) necessary for Karaoke but also improves other peripheral functions. This IC has full peripheral functions including vocal cut, phase shifter, equalizer, detection of intervals between songs, digital surround, and Karaoke scoring. It is therefore suitable not only for dedicated Karaoke units but also for radio cassette tape recorders, TV, VCR, and miniature unit audio systems with Karaoke function.
Features
* * * * Capable of composing echo and key control circuits necessary for Karaoke system with a single chip Echo circuit is capable of supporting digital surround by adopting 16 Kbit RAM built-in digital delay 17 steps of -8 to +8 for key control (1 step is equivalent to a half tone) Karaoke entertainment functions such as Karaoke scoring, vocal cut, equalizer, phase shifter, detection of intervals between songs, and magic voice functions * Generation of unnecessary radiation is avoided because clock's built-in current-control oscillation circuit keeps clock effects inside the clock * Built-in automatic reset circuit activated with power turned on * 5 V single power supply
Recommended Operating Condition
* Supply voltage range: VCC = 4.5 to 5.5 V * Rated supply voltage: VCC = 5 V
System Configuration
Lch input
Source selector R L R+L MIC Vocal cut Key control Phase shifter (ON/OFF)
MIX
Lch output
EQ
MIX Rch input Score system ALC Music search
Rch output
Delay output
MIC MIC AMP
MIC VOL Echo/ Surround Delay VOL
MIX
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 1 of 27
M65851FP
Block Diagram
EQLAMPOUT
65 64 LOUT 63 ROUT MIC LBPF1 3 LBPF2 4 LBPF3 5 Source selector Phase shifter L R + 62 EQRAMPOUT 61 EQRAMPIN2 + 60 EQRAMPIN1
EQLAMPIN1
67
80 MBPF2 1 MBPF3 2
79 Gain
78 Gain
77
76
75
74
73
72
71
70
69
68
66
Equalizer
Equalizer
KSIGIN 6 KCOUT 7 KOLPF2 8 + VOL
Score Keycon
Delay
EQLAMPIN2
MBPF1
MGAIN
LGAIN
VCFIL
MICIN
EQL1
EQL2
EQL3
EQL4
PS1
PS2
RIN
LIN
BPF1 BPF2 LPF HPF LPF ADC DAC REF GND VCC
25
59 EQR4 58 EQR3 57 EQR2
KOLPF1 9 KHPF2 10 KHPF1 11 KCISIG 12 KILPF1 13 KILPF2 14
VCC
16 Kbit SRAM
16 Kbit SRAM
56 EQR1 55 AVCC2 54 AGND2 53 DOUT + + 52 DISIG 51 DIN
D.VOL
F.VOL
GND
KADCINTIN 15 KADCINTOUT 16 KADCCONT 17 KDACCONT1 18
Logic
50 DILPF1
LPF
49 DILPF2 48 DILPF3 47 DADCINTIN
+
ADC
KDACCONT2 19 KDACINTOUT 20 KDACINTIN 21 REF 22 AGND1 23 AVCC1 24
46 DADCINTOUT 45 DADCCONT
KARAOKE scoreing
MCU interface
Auto reset
44 DDACCONT
DAC
43 DDACINTIN 42 DDACINTOUT
Clock Test VDD 26 27 28 29 30 GND 31 32 33 34 35 36 37 38 39 LPF 40
41 DOLPF1
DATA
CLOCK
DGND
STROBE
REQ
VDD
W/RSEL
TEST1
TEST2
DOLPF3
SCORETEST1
SCORETEST2
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 2 of 27
SCORETEST3
DOLPF2
KCSEL
MCK
M65851FP
Function List
M65851FP provides the following functions and can configurate all Karaoke functions with only a single chip.
Usable or Not Function Digital echo Explanation Built in 16 K SRAM Delay time (changeable) 100 ms, 130 ms 150 ms, 200 ms Built in 16 K SRAM -8 to +8 17 steps Built in 16 K SRAM Digital Surround 10 ms to 50 ms 5 kinds Changeable the effect thanks to the external R Bass/Treble -12 dB to +12 dB/2 dB 13 steps changeable Provided all multiple voice soft, L, R, (L+R)/2, Vocal cut L-R (for digital surround) Key control bypass Scoring the MIC vocal input At the MIC vocal is nothing, reference vocal is mixed output. Input the MIC voice to key control (change voice tone) Detect to line input level MCU interface Current control type oscillation circuit Automatic mute Automatic reset x At key set mode capable to use voice key control or key control At music input is nothing, key control level is reset automatically Compare the reference vocal and MIC vocal frequency Switch with the Echo Capable of use both key control and echo Bass: Resonance type Treble: Filter type x Key Set Mode Not Key Set Mode Remarks At key set mode Capable of use echo or surround Not key set mode Capable of use both echo and surround
Digital key control
Digital surround
Phase shifter surround Equalizer
Source selector
Scoring function Help vocal function Voice key control
Music search Others
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 3 of 27
M65851FP
EQLAMPOUT 65
EQLAMPIN2 66
MICIN 77
EQLAMPIN1 67
MBPF1 80 MGAIN 79 LGAIN 78 VCFIL 76 EQL1 71 EQL2 70 EQL3 69 EQL4 68 PS1 73 PS2 72 RIN 74 LIN 75
Pin Arrangement
MBPF2 1 MBPF3 2 LBPF1 3 LBPF2 4 LBPF3 5 KSIGIN 6 KCOUT 7 KOLPF2 8 KOLPF1 9 KHPF2 10 KHPF1 11 KCISIG 12 KILPF1 13 KILPF2 14 KADCINTIN 15 KADCINTOUT 16 KADCCONT 17 KDACCONT1 18 KDACCONT2 19 KDACINTOUT 20 KDACINTIN 21 REF 22 AGND1 23 AVCC1 24
30 VDD 35 REQ 29 MCK 32 DATA 31 DGND 37 TEST1 38 TEST2 25 KCSEL 33 CLOCK 36 W/RSEL 39 DOLPF3 40 DOLPF2 34 STROBE 26 SCORETEST1 27 SCORETEST2 28 SCORETEST3
64 LOUT 63 ROUT 62 EQRAMPOUT 61 EQRAMPIN2 60 EQRAMPIN1 59 EQR4 58 EQR3 57 EQR2 56 EQR1 55 AVCC2 54 AGND2 53 DOUT 52 DISIG 51 DIN 50 DILPF1 49 DILPF2 48 DILPF3 47 DADCINTIN 46 DADCINTOUT 45 DADCCONT 44 DDACCONT 43 DDACINTIN 42 DDACINTOUT 41 DOLPF1
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 4 of 27
M65851FP (Top view) Outline: PRQP0080GB-A (80P6N-A)
M65851FP
Pin Description
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Symbol MBPF2 MBPF3 LBPF1 LBPF2 LBPF3 KSIGIN KCOUT KOLPF2 KOLPF1 KHPF2 KHPF1 KCISIG KILPF1 KILPF2 KADCINTIN KADCINTOUT KADCCONT KDACCONT1 KDACCONT2 KDACINTOUT KDACINTIN REF AGND1 AVCC1 KCSEL SCORETEST1 SCORETEST2 SCORETEST3 MCK VDD DGND DATA Name Microphone band pass filter 2 Microphone band pass filter 3 Line band pass filter 1 Line band pass filter 2 Line band pass filter 3 Key controlled signal input Key control output Low-pass filter 2 output Low-pass filter 1 input High-pass filter 2 output High-pass filter 1 input Key control signal output Low-pass filter 1 input Low-pass filter 2 output A/D integrator input A/D integrator output A/D control D/A control 1 D/A control 2 D/A integrator output D/A integrator input Reference Analog GND 1 Analog power supply 1 Key control selector Score test selector 1 Score test selector 2 Score test selector 3 Clock control Digital power supply Digital GND Serial data I/O I O -- I O I O O I O I -- I O I O -- -- -- O I -- -- -- I: CMOS 20 k I: CMOS 20 k I: CMOS 20 k O: CMOS -- -- -- I: CMOS Schmitt 50 k O: CMOS 33 34 35 36 37 38 39 40 41 CLOCK STROBE REQ W/RSEL TEST1 TEST2 DOLPF3 DOLPF2 DOLPF1 Clock control Strobe Request Write-read selector Test signal control input 1 Test signal control input 2 Low-pass filter 3 output Low-pass filter 2 input Low-pass filter1 input I: CMOS Schmitt 50 k I: CMOS Schmitt 50 k O: CMOS I: CMOS Schmitt 50 k I: CMOS 20 k I: CMOS 20 k O I -- Post-filter after D/A conversion for digital delay Microcomputer interface Serial data input/output Score test selector; normally no connect External R controls built-in clock generator circuit 5V Controls the key selector key control mode or not Score test selector; normally set to L level Analog reference voltage 1/2VCC Composes a D/A conversion integrator with external C Composes an A/D conversion integrator with external C Output by selecting from L, L+R/2, L-R, and microphone input Pre-filter after D/A conversion for key control High-pass passage filter for high-pass through Key controlled signal input Key control signal output Post-filter after D/A conversion for key control Function Composes band pass filter for Karaoke scoring (For microphone signal) Composes band pass filter for Karaoke scoring (For reference signal)
Shift clock output Strobe output Request output Control the selector write/read Test input pin; normally set to L
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 5 of 27
M65851FP
Pin Description (cont.)
Pin No. 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Symbol DDACINTOUT DDACINTIN DDACCONT DADCCONT DADCINTOUT DADCINTIN DILPF3 DILPF2 DILPF1 DIN DISIG DOUT AGND2 AVCC2 EQR1 EQR2 EQR3 EQR4 EQRAMPIN1 EQRAMPIN2 EQRAMPOUT ROUT LOUT EQLAMPOUT EQLAMPIN2 EQLAMPIN1 EQL4 EQL3 EQL2 EQL1 PS2 PS1 RIN LIN VCFIL MICIN LGAIN MGAIN MBPF1 Name D/A integrator output D/A integrator input D/A control A/D control A/D integrator output A/D integrator input Low-pass filter 3 output Low-pass filter 2 input Low-pass filter 1 input Delay select signal input Delay select signal output Delay signal output Analog GND 2 Analog power supply 2 Rch equalizer adjustment C1 Rch equalizer adjustment C2 Rch equalizer adjustment C3 Rch equalizer adjustment C4 Rch equalizer input 1 Rch equalizer input 2 Rch equalizer output Rch output Lch output Lch equalizer output Lch equalizer input 2 Lch equalizer input 1 Lch equalizer adjustment C4 Lch equalizer adjustment C3 Lch equalizer adjustment C2 Lch equalizer adjustment C1 Phase shift input 2 Phase shift input 1 Rch line input Lch line input Vocal cut filter Microphone input Line input gain control Microphone input gain control Microphone band pass filter 1 I/O O I -- -- O I O I -- I O O -- -- -- -- -- -- I I O O O O I I -- -- -- -- I I I I I I I I -- Rch line input Lch line input Process frequencies lower than the vocal band Microphone input Set gain for the no music detection Set gain for the microphone detection Composes band pass filter for Karaoke scoring (For microphone signal) Determines a constant at time of phase shift Rch mixing output Lch mixing output Composes external C for the adjustment of Lch equalizer characteristics (bass and treble) Composes external C for the adjustment of Rch equalizer characteristics (bass and treble) Delay signal output Outputs after selection of echo/surround input signal Pre-filter before A/D conversion for digital delay Composes a A/D conversion integrator with external Function Composes a D/A conversion integrator with external
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 6 of 27
M65851FP
Absolute Maximum Ratings
Item Supply voltage Circuit current Input voltage Operating temperature Storage temperature Symbol VCC Vi Pd Topr Tstg Ratings 6.0 -0.3 to VCC + 0.3 815 -20 to +75 -40 to +125 Units V V W C C Test Conditions
Recommended Operating Condition
Item Analog supply voltage Digital supply voltage Analog-digital voltage margin L input level H input level Symbol VCC VDD VCC-VDD VIL VIH Min 4.5 4.5 -0.3 0 0 0.7VDD VDD-1 Limits Typ 5 5 0 -- -- -- -- Max 5.5 5.5 0.3 0.3VDD 0.8 VDD VDD Units V V V V V V V Test Conditions
Pin 25, 26, 27, 28, 37, 38 Pin 32, 33, 34, 36 Pin 25, 26, 27, 28, 37, 38 Pin 32, 33, 34, 36
Electrical Characteristics
(VCC = 5 V, f = 1 kHz, Vi = 100 mVrms, F0, Ta = 25C, Unless otherwise noted)
Limits Item Total Circuit current Clock frequency Pull down resistance "H" output current "L" output current Key control Gain between input and output Output distortion Output noise voltage Maximum output voltage Maximum volume attenuation Digital delay Delay time Symbol ICC fck RID IOH IOL GV THD No Vomax VOLATTmax Td Min 25 6.8 10 25 -- 20 -3 -- -- 0.7 -- 4.2 8.4 13.5 19.7 40.2 86.3 116 128 177 Gain between input and output GV -3 Typ 60 8 20 50 -20 34 0 1.3 -80 1.0 -60 10.2 15.4 20.5 28.7 49.2 98.3 131 148 197 0 Max 90 9.2 40 100 -10 -- +3 3 -65 -- -40 16.2 22.4 27.5 37.7 58.2 110.3 146 168 217 +3 dB Units mA MHz k k mA mA dB % dBV Vrms dB ms Pin 25, 26, 27, 28, 37, 38 Pin 32, 33, 34, 36 Pin 32, 35, VOH = 4.0 V Pin 32, 35, VOL = 1.0 V VOL = 0 dB VO = 100 mVrms, 30 kHz LPF JIS-A THD = 10% Gain = - Sets 10 ms with microcomputer Sets 15 ms with microcomputer Sets 20 ms with microcomputer Sets 30 ms with microcomputer Sets 50 ms with microcomputer Sets 100 ms with microcomputer Sets 130 ms with microcomputer Sets 150 ms with microcomputer Sets 200 ms with microcomputer VOL = 0 dB Test Conditions No signal provided
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 7 of 27
M65851FP
Electrical Characteristics (cont.)
(VCC = 5 V, f = 1 kHz, Vi = 100 mVrms, F0, Ta = 25C, Unless otherwise noted)
Limits Item Digital delay Output distortion Symbol THD Min -- -- -- -- -- -- Maximum output voltage Output noise voltage Vomax No 0.7 -- -- -- -- Maximum volume attenuation Line Gain between input and output Output distortion Maximum output voltage Output noise voltage Channel separation Input impedance Vocal removal ratio EQ Maximum bass boost volume Maximum bass cut volume Maximum treble boost volume Maximum treble cut volume VOLATTmax GV THD Vomax No CS Zi Grej GBBmax GBCmax GTBmax GTCmax -- -- -3 - 1.2 -- -- 10 14 9 -15 9 -15 Typ 0.3 0.5 0.7 1.0 1.5 2.0 1.0 -92 -87 -85 -82 -60 -60 0 0.05 1.8 -95 -70 20 18 12 -12 12 -12 Max 0.6 1.0 1.4 2.0 3.0 4.0 -- -80 -72 -70 -67 -40 -40 +3 0.1 -- -88 -50 40 -- 15 -9 15 -9 dB % Vrms dBV dB k dB dB Vocal cut f = 100 Hz f = 100 Hz f = 10 kHz f = 10 kHz dB Vrms dBV Units % Test Conditions Td = 10, 15, 20 ms, 30 kHz LPF Td = 30 ms, 30 kHz LPF Td = 50 ms, 30 kHz LPF Td = 100 ms, 30 kHz LPF Td = 150 ms, 30 kHz LPF Td = 200 ms, 30 kHz LPF 30 kHz LPF, THD = 10% Td = 10, 15, 20, 30, 50 ms, Vi = 0 mVrms JIS-A Td = 100 ms, Vi = 0 mVrms JIS-A Td = 130, 150 ms, Vi = 0 mVrms JIS-A Td = 200 ms, Vi = 0 mVrms JIS-A Delay volume, Gain = - Feedback volume, Gain = - 30 kHz LPF, upon key control through 30 kHz LPF, upon key control through 30 kHz LPF, THD = 10% upon key control through JIS-A, upon key control through upon key control through, Lin = 400 Hz, Rout JIS-A
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 8 of 27
M65851FP
Delay Block
Delay block provides a delay signal which using digital echo or digital surround. Constitution
1.0 4700 p 1000 p 0.068 0.068 4700 p 1000 p
0.1
0.1
52 Input +
51
50 49 48
47 46 45
44 43 42
41 40 39
DLSW3
1
DLSW2
LPF Feedback volume
ADC
DAC
LPF
2
Delay volume +
Output Delay
DLSW1
+
16 Kbit RAM
Function 1. Delay time Capable to set the follow delay time;
Mode Echo Surround 100, 130, 150, 200 ms 10, 15, 20, 30, 50 ms Delay Time
2. Switch mode
Mode Echo Surround 1 2 DLSW1 ON OFF OFF DLSW2 1 2 1
Echo "1" Set the echo volume using the delay volume (Change the delay signal gain) Echo "2" Set the microphone volume using the delay volume (Change the delay signal + input signal gain)
Delay Signal Mute Mute OFF Mute ON DLSW3 ON OFF
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M65851FP 3. Input/output LPF Input/output LPF is formed following block.
4700 p 50 (41) 49 (40) 1000 p 48 (39)
1
24.9 k
1 Input
24.9 k
1
24.9 k
2
10.5 k
2
10.5 k
2
10.5 k
- +
Output
Mode Echo Surround
Switch Conditions 1 2
Cut Off Frequency 3.0 kHz 7.0 kHz
4. Volume
Volume Delay volume Feedback volume Mode +6 dB to -12 dB/3 dB step and - 8 level -2 dB to -6 dB/1 dB step and -8 dB, -10dB, - 8 level
Key Control Block
It can be changed the key of Karaoke accompaniment. And it can change a microphone voice which like a monkey voice. It also can use digital echo block at not key set mode.
Key Control Condition, Key Control Set Mode or Not
Pin 25 KCSEL L H Key Control Condition Key control set mode Not key control set mode
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M65851FP Constitution
Input 10 k 2.2 4.7 k
3300 p 10 k 0.068 0.047 820 p 0.068 0.068 0.047
15 k
4700 p 15 k
5.6 k Output 1000 p 1000 p 1000 p 2.2
3.9 k
560 p
27 k
25 12
13
14
15 16 17
18 19 20 21
9
8
11
10
7
6
LPF
ADC
DAC
LPF
HPF
Key control
VOL
+
16 Kbit RAM
Function 1. Key change level
Key Change Level (1step is half tone) Key Up +8 +7 +6 +5 +4 +3 +2 +1 0 -1 -2 -3 Key Down -4 -5 -6 -7 -8
2. Volume It set the key control signal gain. +4 dB to 6 dB/2 dB step and -10 dB, - 8 level 3. Key control level automatic reset When music search detects no signal, key control level is automatic changed normal (0) level. (Provides ON/OFF switch with MCU interface)
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 11 of 27
M65851FP Echo Block (Using Key Control Block) At not key control set mode, digital echo is able to use, when the following block using.
4700 p Input 24 k 2.2 24 k 0.068 1000 p 24 k
1.0
Echo feed back volume
4700 p 24 k
24 k
Output 2.2
24 k 0.1 0.1 0.068 1000 p
24 k
24 k
25 12
13
14
15 16 17
18 19 20 21
9
8
11
10
7
6
LPF
ADC
DAC
LPF
BUF
Delay
VOL
+
16 Kbit RAM
Delay time 100 ms, 130 ms, 150 ms, 200 ms Volume level +4 to -6 dB/2 dB step and -10 dB, - 8 level (same as key control volume)
Phase Shifter Block
Following is the phase shifter block, which makes phase surround effect.
Lch input 20 k 20 k 20 k
+ -
Lch output
20 k Surround SW R (internal)
Key control block output
73 C (external) = 0.022 F 72 20 k 20 k 20 k 20 k
- +
Rch input
Rch output
Switch Conditions Surround SW ON R = 13 k R = 16 k R = 20 k Surround SW OFF
Surround Effect Max Typ Min Noting
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 12 of 27
M65851FP
Equalizer Block
Following is the equalizer block, which can control the both gain bass and treble.
EQIN
+ -
EQSW1 Bass resonance block
- +
EQSW2 EQSW3
EQSW4
Treble block
R2 136 k 71
R1 1.8 k
(56) (57) (58) (59) (62) (63)
70
69
68 C3 0.033
65
64 EQOUT
C2 C1 0.022 0.47
Bass block is resonance type which is used simulated inductor amplifier. Treble block is filter type. These can be set -12 dB to +12 dB/2 dB step. Following is a center frequency "fO", "Q" (bass resonance block).
fO = 1 2 C1 * C2 * R1 * R2 (Hz)
Q = (C1 * R2) / (C2 * R1)
Vocal Cut Block
The sound components of the same phase and same sound volume in the L and R channels are attenuated. This made also allows components with lower frequency than the vocal band to pass through the filter, to compensate insufficient low-frequency sound. Constitution
20 k Lch input
- +
20 k
20 k
+ -
Vocal cut output
R 20 k 76 C 0.15 Rch input 20 k
20 k 20 k
LPF is formed by the internal R (20 k) and the external C, when C = 0.15 F, cut off frequency is 53 Hz.
fVC = 1 = 53.0 Hz 2 CR
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M65851FP
Scoring Function
Scoring function judge the MIC vocal input.
Scoring Output Form MIC input is judged from 0 to 99 level.
Constitution Scoring function is constituted following two ways.
Judgment Conditions 1. Compare the frequency 2. Vocal level judgment Function Compare the frequency reference voice and microphone voice Vocal level judgment (as vocal is bigger than reference level, judgment is good) Ratio 75% 25%
Music Search Music search is constituted following. (1) Input signal reference level comparison (2) Music detection (3) No music detection 1. Input signal reference level comparison Input signal reference level comparison is constituted amplifier and level comparison. When input signal is bigger than reference level, level comparison output the pulse which added internal clock.
Input signal
Reference level
Clock signal (125 kHz)
Pulse output (after level detection)
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M65851FP The reference level can be changed, thanks to the following internal R2 and external R1 which determine the amplifier gain.
Lch
+ -
Level comparator
R2 = 50 k 78 Internal resistance precision is about 30%. R1 Gain GV = (R1 + R2) / R1
2. Music detection To search a music interval, it is necessary to judge if it is a music or not. This judgment is made by monitoring the 20 seconds and counting the pulse signal (after level detection). The pulse signal counts is bigger than fixed counts, it is judged as a music. Pulse counter is reset whenever monitor 20 seconds or judged no music decision.
about 20 s Pulse output (after level detection)
4096 pulse Music decision
3. No music detection After music decision "2. Music detection", no music is judged when no pulse in level detection at 3 seconds. But if there is not no pulse when monitoring the 3 seconds, no music decision counter is reset.
about 3 s
Pulse output (after level detection) No music decision
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M65851FP Signal Input Circuit Signal input circuit is constituted the following band pass filter, which cuts the input signal to vocal band width.
C1 = 0.15 F 80 (3) C2 = 1500 pF 1 (4) R2 = 100 k Input R1 = 10 k 2 (5)
- +
Output
Low level cut off frequency fcl and high level cut off frequency fch is fcl = 1/2 C1R1 = 106 Hz fch = 1/2 C2R2 = 1.1 kHz and, the gain of amplifier GV is GV = R2/R1 = 20 dB. Same as the band pass filter is constituted microphone signal input.
Automatic Vocal Support
In case using the Karaoke system, when microphone input level is nothing, then audio source vocal appears and help the microphone songs. (It can set only following conditions, audio source selector sets Lch monaural or vocal cut)
Microphone Input Level On Off Lch monaural (L+R)/2 Source Selector Mode Vocal cut (L+R)/2 Others Same as microphone input
Changing time from microphone input level changed to source selector changed is following. Attack time (Off On) 0 s Release time (On Off) 1 s or 2 s
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M65851FP
The Timing of Microphone Input Signal Detection
Microphone Ref (2.5 V) input
Reference level (1.0 V)
Level output Release time Attack time 0 s Microphone signal detection On Off On
Following is the microphone input signal judgment block, which includes amplifier so reference level can regulate.
MIC
+ -
Level comparator
R2 = 50 k 79 Internal resistance precision is about 30%. R1 Gain GV = (R1 + R2) / R1
Oscillation Circuit
This IC incorporates a current control type clock oscillator circuit in it, thus providing circuit configuration just by connecting a R for current control pin 29 (CLKCNT). Fully internal clock supply prevents occurrence of undesired radiation without affecting any external circuit. The oscillator frequency fck is following. fck = 8 MHz
Reset
This IC is automatically reset when the power is turned on, and is automatically canceled nearly 120 ms later.
Function Echo Delay time Key control Phase shifter Equalizer Source selector Scoring function First Set 150 ms No changing OFF OFF Stereo (Key control by pass) OFF
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M65851FP
MCU Interface
Constitutions MCU interface is constituted serial bass interface, so the selection, data input or output, is changed by pin 36 input level.
Pin 36 W/RSEL L H Conditions MCU IC (Data input) IC MCU (Data output)
MCU interface circuit
32
33
34
35
36
DATA CLOCK STROBE
REQ W/RSEL
MCU
Data Input 1. Data input format
DATA D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15
CLOCK
STROBE
2. Mode creations D0 to D1 select the following each block, and D2 to D13 create the particular setting. D14 and D15 are chip address, so this IC can use only when D14 = "L" and D15 = "H".
D0 L L H H D1 L H L H D2 to D13 Echo/Surround mode Key control mode Equalizer/Phase sifter mode Line mixing/Others mode D14 D15 Chip address L H
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M65851FP (1) Echo/Surround mode
D0 L D1 L D2 Echo/ Surround D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 L D15 H Echo delay time D2 L H -- -- -- -- -- -- -- -- -- D8 H H H H L L L L Feedback volume -- -- -- -- -- -- -- -- Surround delay time D3 -- -- L H L H -- -- -- -- -- D9 H H L L H H L L -- -- -- -- -- -- -- -- D4 -- -- L L H H -- -- -- -- -- D10 H L H L H L H L -- -- -- -- -- -- -- -- D5 -- -- -- -- -- -- H L H L H D11 -- -- -- -- -- -- -- -- H H H H L L L L Delay volume Feedback volume
Item Echo/Surround Switch Echo delay time
Surround delay time
D6 -- -- -- -- -- -- L H H L L D12 -- -- -- -- -- -- -- -- H H L L H H L L
D7 -- -- -- -- -- -- L L L H H D13 -- -- -- -- -- -- -- -- H L H L H L H L
Function Echo Surround On not key control set mode sets H level 100 ms 130 ms 150 ms 200 ms 10 ms 15 ms 20 ms 30 ms 50 ms Function +6 dB +3 dB 0 dB -3 dB -6 dB -9 dB -12 dB - -2 dB -3 dB -4 dB -5 dB -6 dB -8 dB -10 dB -
Item Delay volume
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M65851FP (2) Key control mode
D0 L D1 H D2 Auto reset D3 VSC/ VMC D4 D5 D6 D7 D8 D9 D10 D11 D12 Delay volume select D13 Delay signal mute D14 L D15 H Key change level Key control volume
Item Automatic key control reset Key control mode selector Key change level
D2 L H -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- D9 H H H H L L L L D12 L H -- --
D3 -- -- L H -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- D10 H H L L H H L L D13 -- -- L H
D4 -- -- -- -- H H H H H H H H L L L L L L L L L D11 H L H L H L H L
D5 -- -- -- -- H L L L L L L L L L L L L L L L H
D6 -- -- -- -- L H H H H L L L L L L L H H H H L
D7 -- -- -- -- L H H L L H H L L L H H L L H H L
D8 -- -- -- -- L H L H L H L H L H L H L H L H L
Function Automatic reset OFF Automatic reset ON VMC mode VSC mode +8 +7 +6 +5 +4 +3 +2 +1 0 -1 -2 -3 -4 -5 -6 -7 -8
Item Key control volume set (when not key control mode, it use a echo volume)
Function +4 dB +2 dB 0 dB -2 dB -4 dB -6 dB -10 dB -
Item Delay volume selector Delay signal mute
Function Using an echo volume Using a microphone volume Mute OFF Mute ON
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 20 of 27
M65851FP (3) Equalizer/Phase shifter mode
D0 H D1 L D2 D3 Automatic vocal support D4 D5 Phase shifter D6 D7 D8 Equalizer treble D9 D10 D11 D12 Equalizer bass D13 D14 L D15 H
Item Automatic vocal support (It can use only echo mode) Phase shifter surround mode
D2 L H -- -- -- -- -- --
D3 -- -- L H -- -- -- --
D4 -- -- -- -- L H L H
D5 -- -- -- -- L L H H
Function OFF ON Release time 1 s Release time 2 s OFF Surround effect Minimum Surround effect Typical Surround effect Maximum
Equalizer Treble Mode
D6 H H H H H H L L L L L L L D7 H H H L L L L L L L H H H D8 H L L H H L L L H H L L H D9 L H L H L H L H L H L H L Volume (dB) +12 +10 +8 +6 +4 +2 0 -2 -4 -6 -8 -10 -12
Equalizer Bass Mode
D10 H H H H H H L L L L L L L D11 H H H L L L L L L L H H H D12 H L L H H L L L H H L L H D13 L H L H L H L H L H L H L Volume (dB) +12 +10 +8 +6 +4 +2 0 -2 -4 -6 -8 -10 -12
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 21 of 27
M65851FP (4) Line mixing/Others mode
D0 H D1 H D2 D3 D4 Source selector D5 Key control by pass D3 L H L H -- -- -- -- D6 Key control mixing D4 L H -- -- -- -- -- -- -- D7 Delay mixing D8 D9 D10 D11 D12 D13 Voice key control D14 L D15 H Scoring function
Item Source selector
D2 L L H H -- -- -- --
Key control by pass Key control mixing ON/OFF selector
D5 -- -- -- -- -- L H -- --
D6 -- -- -- -- -- -- -- L H
Stereo
Function Delay block input L-R Delay block input (L+R)/2
Lch monaural Rch monaural Vocal cut Bypass OFF (Though the key control circuit) Bypass ON (By pass the key control circuit) Mixing OFF (SSSW10 = "2") Mixing ON (SSSW10 = "1")
Relationships Source Selector and Key Control Bypass Mode
D2 L L H H D3 L H L H Item Delay signal mixing ON/OFF selector Scoring function Key Control Mixing Bypass ON Stereo Lch monaural Rch monaural Vocal cut D7 L H H -- -- -- -- -- -- -- Voice key control -- -- D8 -- L H -- -- -- -- -- -- -- -- -- D9 -- -- -- L H -- -- -- -- -- -- -- D10 -- -- -- -- -- L H -- -- -- -- -- Key Control Mixing Bypass OFF (L+R)/2 Lch monaural Rch monaural Vocal cut D11 -- -- -- -- -- -- -- L H H -- -- D12 -- -- -- -- -- -- -- -- L H -- -- D13 -- -- -- -- -- -- -- -- -- -- L H Function Mixing OFF Mixing ON (L, R same phase) Mixing ON (L, R reverse phase) Scoring function OFF Scoring function ON Score output after no music decision Score can output always timing Internal music detection decides the scoring start/stop timing * Scoring stop MCU data decides the scoring start/stop Scoring start timing * OFF ON
Notes: * Scoring function start/stop mode 1. Decide the internal music detection (D11 = "L") 2. Decide the MCU data (D11 = "H") When D12 is "L" level scoring is stopping, and change "H" level, scoring is start until D12 changes "L" level.
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 22 of 27
M65851FP Data Output (Score Result Output) 1. Internal music detection decides the scoring output timing When Karaoke song is over and then music detection judgment the no music detection, scoring is over and output the "H" pulse to REQ. After REQ is "H" level and then W/RSEL changes from "L" to "H", this IC changes a output mode and it can output the score result.
Music interval decision Line input REQ (output) W/RSEL (input) CLOCK (input) DATA (output) D0 D1 D2 D13 D14 D15 250 ns or more (one clock cycle) Music decision
2. MCU data decides the scoring result data output timing W/RSEL changes from "L" to "H", so this IC changes output mode, and then score result data can output the same period of the clock.
Line input W/RSEL (input) CLOCK (input) DATA (output) D0 D1 D2 D13 D14 D15 250 ns or more (one clock cycle)
Music decision
3. Data format
D0 D1 D2 D3 D4 D5 D6 D7 D8 Music interval decision D8: Music interval decision D9 to D15: Score result output an example 78 points D9 (MSB) D10 D11 D12 D13 D14 D15 (LSB) Score result output (binary output)
Music decision = "H", music interval decision = "L" D9 D10 D11 D12 D13 D14 D15 H L L H H H L
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 23 of 27
M65851FP
Caution
Input/Output Signal Level When using phase shifter, echo mixing and equalizer, this IC is limited the following functions. So, please determine the level of the each functions.
Input Base Level 150 mVrms 100 mVrms 100 mVrms 50 mVrms Equalizer Gain Mode 0 dB +6 dB +12 dB +12 dB Hand Room 10.6 dB 8.1 dB 2.1 dB 8.1 dB S/N 78.5 dB 75 dB 75 dB 69 dB
Improvement of Head Room As stated above, equalizer gain level is bigger, head room becomes also narrow. So It can be improvement that latest op-amp which using equalizer use external op-amp.
EQIN +
136 k 71
- +
1.8 k (56) 70
Bass section
Treble section
(57)
69
(58) 0.033
68
(59)
67
(60)
66
(61)
0.022
0.47
1.0
1.0
Analog high voltage VCC2 1.0 M5218AP Output +
150 k VCC2 2
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 24 of 27
-
- 65 (62) 64 (63)
M65851FP Following the relations supply voltage, input signal level, head room and S/N. (external op-amp: M5218AP)
VCC2 9V Input Level 150 mVrms 100 mVrms 15 V 150 mVrms Equalizer Gain Level +6 dB +12 dB +6 dB +12 dB +6 dB +12 dB 100 mVrms +6 dB +12 dB 20 V 150 mVrms 100 mVrms +12 dB +12 dB Head Room 8.1 dB 2.1 dB 11.6 dB 5.6 dB 10.6 dB (effect M65851FP) 8.1 dB 14.1 dB (effect M65851FP) 11.6 dB 10.6 dB (effect M65851FP) 14.1 dB (effect M65851FP) S/N 78.5 dB 78.5 dB 75 dB 75 dB 78.5 dB 78.5 dB 75 dB 75 dB 78.5 dB 75 dB
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 25 of 27
M65851FP
Application Example
MICin
+ +
Lin 0.15 1.0
Rin 0.022
+
1 10 k
1
+
0.022 0.47 0.033
10 k
0.15
80 1
BPF1
79 Gain
78 Gain
77
76
+
1.0
1.0
75
74
73
72
71
70
69
68
67
66
65 64 63
+ 2.2 + 2.2 Lout
1500 p
Equalizer MIC L R + Source selector Phase shifter
2 3
0.15
Rout
62 61 + 60
Equalizer
4
1500 p
BPF2
5 6
2.2 +
Score Keycon + VOL
LPF
Delay
0.033
59 58
0.47
7
4700 p 15 k
8
560 p
57
0.022
9
3.9 k 5.6 k 1000 p
10
27 k
VCC
16 Kbit SRAM
HPF
16 Kbit SRAM
56 55 54 53 + + 52
1.0
+ 0.1 100 + 2.2
11
1000 p 1000 p 3300 p 10 k 820 p 10 k 4.7 k + 12 2.2
13
LPF
14
D.VOL
GND
51
F.VOL
15
0.047
Logic
ADC
50
4700 p
16
0.068
LPF
49
1000 p
17
0.068
+
48 47
0.068
18 19 20
0.047 15 k + 47
ADC
0.068
46 45
DAC
KARAOKE scoreing
REF
21 22 23
MCU interface
Auto reset
DAC
0.1
44
0.1
43
0.068
GND
Clock Test VDD 26 27 28
11 k
42 GND 31
0.1 DATA CLOCK STROBE REQ W/RSEL
+ 100 0.1
VCC
24
LPF 32 33 34 35 36 37 38 39 40
41
4700 p
25
29
30
Key control noncorrespondence Key control correspondence
1000 p
Unit R: C: F
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 26 of 27
M65851FP
Package Dimensions
JEITA Package Code P-QFP80-14x20-0.80 RENESAS Code PRQP0080GB-A Previous Code 80P6N-A MASS[Typ.] 1.6g
HD
*1
D 41
64
65
40
ZE
*2
NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET.
HE
E
80 25
Reference Dimension in Millimeters Symbol
1
ZD
24 Index mark F
c
D E A2 HD HE A A1 bp c
L Detail F
*3
REJ03F0172-0201 Rev.2.01 Jan 25, 2008 Page 27 of 27
A1
e
y
bp
e y ZD ZE L
Min Nom Max 19.8 20.0 20.2 13.8 14.0 14.2 2.8 22.5 22.8 23.1 16.5 16.8 17.1 3.05 0.1 0.2 0 0.3 0.35 0.45 0.13 0.15 0.2 0 10 0.65 0.8 0.95 0.10 0.8 1.0 0.4 0.6 0.8
A
A2
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When exporting the products or technology described herein, you should follow the applicable export control laws and regulations, and procedures required by such laws and regulations. 4. All information included in this document such as product data, diagrams, charts, programs, algorithms, and application circuit examples, is current as of the date this document is issued. Such information, however, is subject to change without any prior notice. Before purchasing or using any Renesas products listed in this document, please confirm the latest product information with a Renesas sales office. Also, please pay regular and careful attention to additional and different information to be disclosed by Renesas such as that disclosed through our website. (http://www.renesas.com ) 5. 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