HELP! Regarding YM7121C and YM3436D - diyAudio
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Old 2nd July 2004, 07:11 PM   #1
Xorro is offline Xorro  Canada
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Default HELP! Regarding YM7121C and YM3436D

I am looking for pinout diagrams for Yamaha YM7121C, and YM3436D. Help PLEASE!
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Old 2nd July 2004, 11:26 PM   #2
guido is offline guido  Netherlands
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3436B: digital audio interface receiver dir2

1 DAUX audio data aux input
2 HDLT async buffer operation flag output
3 DOUT audio data output
4 VFL validity flag output
5 OPT sync signal output for dac
6 SYNC sync signal output for dsp
7 MCC bit clock output 64fs
8 WC word clock fs
9 MCB bit clock output 128fs
10 MCA bit clock output 256fs
11 SKSY clock sync control input
12 XI crystal osc connection or ext clock input 256fs
13 XO crystal osc connection
14 P256 VCO clock output 256fs when locked
15 LOCKN PLL lock flag output L when locked
16 VSS ground
17 TST2 LSI test terminal NC
18 DIM1 data input mode select1
19 DIM0 data input mode select0
20 DOM1 data output mode select1
21 DOM0 data output mode select0
22 KM1 clock mode select H PLL auto switching L XI fixed
23 RSTN reset active L
24 VDDA +5 VCO
25 CTLN VCO control input
26 PCO PLL phase comp output
27 NC
28 CTLP VCO adjustment input (usually to VSSA)
29 VSSA ground for VCO
30 TSTN LSI test terminal NC
31 KM2 clock mode select 2 H PLL sync, L XI sync
32 KM0 clock mode select 0 H EXTW input, L DDIN input
33 FS1 sampling freq code output 1 / channel status output
34 FS0 sampling freq code output 0 / user data output
35 CSM channel status, user data output select
36 EXTW audio data aux input word clock
37 DDIN EIAJ(AES/EBU) input
38 LR PLL word clock output (fs when locked)
39 VDD +5 logic
40 ERR data error flag output
41 EMP emph control code utput / block start sync sign output
42 CDO microprocessor interface data output
43 CCK microprocessor interface clock input
44 CLD microprocessor interface load input

RSI now lucky for you i can type really fast
Got 12 pages of datasheet, but no scanner

Also 2 pages on the 7121 signal processor/controller for CD player
what philips people would call a decoder. And a block diagram of it, but no pinnumbers

Fixing yamaha CD player ??
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Old 3rd July 2004, 01:58 AM   #3
Xorro is offline Xorro  Canada
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Location: Canada
THANKS! Especially for all the typing! Wow! I really appreciate it. Any info for these chips is VERY difficult to find. Oh, and by the way, the YM3436D is a reciever in my Monarchy Audio 22B. I can get an old LClock, but before buying I am trying to install it to see if it will make a sonic difference. Hence the need for pinouts - I've never done this, so want to be as careful as possible.
Thanks again!
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