W83176R-716 ddr buffer for sis chipset W83176R-716 data sheet revision history pages dates version version on web main contents 1 n.a. n.a. all of the versions before 0.50 are for internal use. 2 n.a. 02/apr 1.0 1.0 change version and version on web site to 1.0 3 4 5 6 7 8 9 10 please note that all data and specifications are subj ect to change without notice. all the trademarks of products and companies mentioned in this data sheet belong to their respective owners. life support applications these products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be ex pected to result in personal injury. winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify winbond for any damages resu lting from such improper use or sales. publ i c at i on rel e ase dat e : apri l . 2001 - 1 - r e v i s i o n 1 . 0
W83176R-716 1.0 general description the W83176R-716 is a 2.5v d.d.r. clock buffer designed for sis chipset. W83176R-716 can support 2 d.d.r. dram dimms. W83176R-716 can be inco rporated with w83194br-640/740 which is the step-less clock with free programmabl e cpu/agp/pci freq. outputs. the W83176R-716 provides i 2 c serial bus interface to program the registers to enable or disable each clock outputs. the W83176R-716 accepts a pair referenc e clock as its input and runs on 2.5v supply. 2.0 product features ? zero-delay clock outputs ? feedback pins for synchronous ? supports 2 d.d.r. dimms ? one pairs of additional outputs for feedback ? low skew outputs (< 100ps) ? supports 266mhz d.d.r. sdram ? i 2 c 2-wire serial interface and i 2 c read back ? 28-pin ssop package publ i c at i on rel e ase dat e : apri l . 2001 - 2 - r e v i s i o n 1 . 0
W83176R-716 3.0 pin configuration cl k c 0 1 2 8 gnd c l kt0 2 27 c l kc 5 vd d 3 26 c l kt5 c l kt1 4 25 c l kc 4 cl k c 1 5 2 4 cl k t 4 gnd 6 23 v d d sd c l k 7 22 sd at a buf f er_ i n t 8 2 1 n c nc 9 2 0 f b _ i n t vd da 10 19 f b _ o u t t gnd 1 1 1 8 n c vd d 1 2 1 7 c lkt3 clk t 2 1 3 1 6 c lk c 3 cl k c 2 1 4 1 5 g nd 4.0 pin description in - input out - output i/o - bi-directional pin - internal 120k ? pull-up publ i c at i on rel e ase dat e : apri l . 2001 - 3 - r e v i s i o n 1 . 0
W83176R-716 4.1 clock outputs symbol pin i/o function clkc[5:0] 1,5,14,16,25, 27 out complementory clocks of differential pair outputs clkt[5:0] 2,4,13,17,24, 26 out true clocks of differential pair outputs sdata 22 i/o serial data of i 2 c 2-wire control interface sdclk 7 in serial clock of i 2 c 2-wire control interface buffer_int 8 in true reference clock input nc 9, 18, 20 in not connected fb_outt 19 out true feedback output, dedicated for external feedback. it switches at the same frequency as the clk. this output must be wired to fb_int. fb_inc 21 in complementory feedback input, provides feedback signal to the internal pll for synchronization with clk_inc to eliminate phase error. 4.2 power pins symbol pin function gnd 6,11,15,28 ground vdd 3,12,23 power supply 2.5v avdd 10 analog power supply, 2.5v publ i c at i on rel e ase dat e : apri l . 2001 - 4 - r e v i s i o n 1 . 0
W83176R-716 5.1 register 0 : control regist er ( 1 = active, 0 = inactive ) bit @powerup pin description 7 1 1,2 clkc0,clkt0(active / inactive) 6 1 4,5 clkc1,clkt1(active / inactive) 5 1 13,14 clkc2,clkt2(active / inactive) 4 1 16,17 clkc3,clkt3(active / inactive) 3 1 24,25 clkc4,clkt4(active / inactive) 2 1 26,27 clkc5,clkt5(active / inactive) 1 1 - reserved 0 1 - reserved 5.2 register 1: reserved register (default = 1) bit @powerup pin description 7 1 - reserved (skew control ??) 6 1 - reserved 5 1 - reserved 4 1 - reserved 3 1 - reserved 2 1 - reserved 1 1 - reserved 0 1 - reserved 5.3 register 2: reserved register (default = 1) bit @powerup pin description 7 1 - reserved 6 1 - reserved 5 1 - reserved 4 1 - reserved 3 1 - reserved 2 1 - reserved 1 1 - reserved 0 1 - reserved publ i c at i on rel e ase dat e : apri l . 2001 - 5 - r e v i s i o n 1 . 0
W83176R-716 5.4 register 3: reserved register (default = 1) b i t @ p o w e r u p p i n d e s c r i p t i o n 7 1 - r e s e r v e d 6 1 - r e s e r v e d 5 1 - r e s e r v e d 4 1 - r e s e r v e d 3 1 - r e s e r v e d 2 1 - r e s e r v e d 1 1 - r e s e r v e d 0 1 - r e s e r v e d 6.0 ordering information part number package ty pe production flow W83176R-716 28 pin ssop commercial, 0 c to + 7 0 c 7.0 how to read the top marking publ i c at i on rel e ase dat e : apri l . 2001 - 6 - r e v i s i o n 1 . 0 W83176R-716 28051234 814gab 1st line: winbond logo and the type number: W83176R-716 2 n d l i n e : t r a c k i n g c o d e 2 8 0 5 1 2 3 4 2 : wafers manufactured in winbond fab 2 8051234 : wafer production series lot number 3 r d l i n e : t r a c k i n g c o d e 8 1 4 g b b 814 : p a c k a g e s m a d e i n ' 9 8 , w e e k 1 4 g : assembly house id; o means ose, g means gr a : internal use code b : ic revis i on all the trade marks of products and companies menti oned in this data sheet belong to their respective owners.
W83176R-716 8.0 package drawing and dimensions 28pin 209mil 1 2 d e e y b a1 a2 a seating plane dteail a l l1 detail a seating plane e h 14 15 0 0.002 0.197 0.291 7.80 0 7.40 8 8.20 5.30 b e d c 9.90 5.00 a1 a2 a 5.60 10.50 10.20 2.00 1.85 8 0.323 0.307 0.073 0.079 0.220 0.389 0.413 0.401 0.209 min. dimension in inch symbol dimension in mm min. nom max. max. nom 0.05 e l l1 y 0.009 0.015 0.004 0.010 0.021 0.030 0.050 0.004 0.22 0.38 0.09 0.25 0.65 0.0256 0.55 0.75 1.25 0.10 h e 0.95 0.037 1.75 1.65 0.065 0.069 he a dqua r t e r s n o . 4 , c r e a t io n r d . i i i s c i e n ce- b a s e d i n du st ri al p a rk h s in c h u , t a iw a n te l : 8 8 6 -3 5 - 77006 6 fa x : 8 8 6 -3 5 - 789467 www: ht t p ://w w w .w in b o n d . c o m . tw / t a i p ei o f f i ce 9f , n o . 4 8 0 , rue i g ua n g ro a d , ne i hu di s t r i c t , ta i p e i, 1 1 4 , t a iw a n te l : 8 8 6 - 2 - 81777168 f a x : 886- 2- 87153579 w i nbond e l e c t r oni c s ( h . k . ) lt d. r m . 803, w o rl d t r ade s q u a re, t o w e r ii 123 h o i b u n r d . , k w u n t o n g ko wl o o n , ho ng ko ng t e l: 852- 27516023- 7 f a x : 852- 27552064 w i nbond e l e c t r oni c s ( n o r t h a m er i ca) c o r p . 2727 n o rt h fi rst s t reet s a n jose, c a l i f orn i a 9 5 1 3 4 t e l: 1- 408- 9436666 f a x : 1- 408- 9436668 please note that all data and specifications are subj ect to change w i thout notice. all the trade marks of products and companies mentioned in this data sheet belong to their respectiv e ow ners . these products are not designed for use in life support appliances, dev i ces, or sy stems w h ere malfunction of these products can reasonably be expected to result in personal injury . winbond customers using or selling these products for use in such applications do so at their ow n risk and agree to fully indemnify winbond for any damages resulting from such improper use or sale. publ i c at i on rel e ase dat e : apri l . 2001 - 7 - r e v i s i o n 1 . 0
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