Sony cfd-s27 - Diagrams and Schematics

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Pin No. Pin name I/O Description
1 – 19 SEG 18 – 0 O LCD segment output.
20 – 23 COM 3 – 0 O LCD common output.
24 VLC1 I LCD drive deviced voltage input.
25 VLC2 I LCD drive deviced voltage input.
26 VLC3 I LCD drive deviced voltage input.
27 VL I LCD drive deviced voltage input.
28 RMC – Not used (Open).
29 SCOR I CD SCOR signal input.
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30 TX I Sub clock input (32,768kHz).
31 TEX O Sub clock output (32,768kHz).
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32 RST I System reset input.
33 NC – Not used (Open).
34 VDD – Power supply.
35 KEY1 I Key input.
36 KEY2 I Key input.
37 KEY3 I Key input.
38 KEY4 I Key input.
39 INIT O Initial output.
40 Destination I Destination select input.
41 9k/10k I 9k/10k switching detection.
42 REG-CHK I Regulator check input.
43 NC – Not used (Open).
44 C-SQCK O Sub-code Q data reading clock output.
45 C-SENSE I Sens input from CD DSP (IC702).
46 C-SQSO I Sub-code Q data input.
47 A-MUTE O Audio mute output.
48 V-DATA O Serial data output to electrical volume (IC351).
49 V-CLK O Serial clock output to electrical volume (IC351).
50 V-CE O Chip enable output to electrical volume (IC351).
51 REG-CON O Regulator ON/OFF control.
52 TAPE O Function select signal output. “H” : Tape
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53 RADIO O Radio B+ ON/OFF control.
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54 CD O CD B+ ON/OFF control.
55 REC I REC signal input. “H” : REC, “L” : PB
56 CD-DOOR I CD door open/close detect.
57 R-COUNT I Radio count data input from PLL (IC3).
58 R-ST I Radio stereo signal input from PLL (IC3).
59 C-MUTE O CD mute output.
60 PA-CON O Power amp (IC305) control output.
61 WP I Wake-up signal input terminal.
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62 T-PLAY I Tape play detect.
63 C-XRST O Reset output for CD (IC701, IC702, IC704).
64 C-DATA O Serial data output for DSP (IC702).
65 C-CLK O Serial clock output for DSP (IC702).
SECTION 5
DIAGRAMS
5-1. EXPLANATION OF IC TERMINALS
IC801 CXP50716-080Q (SYSTEM CONTROL)