Sony SCD-1/777ES, Service Manual

Page: 43 / 78

43
7-24. IC PIN FUNCTION DESCRIPTION
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MAIN BOARD IC701 HD6413002F16 (CPU)
Pin No. Pin Name I/O Description
1 VCC —
Power supply terminal (+5V)
2 SSSD I/O Two-way data bus with the SACD/CD RF AMP (IC001)
3 SSI CLK O
Serial data transfer clock signal output to the SACD/CD RF AMP (IC001)
4 PWM O
PWM signal output to the loading motor drive (IC515)
5 JIG CTR I/O Two-way data bus with the RS-232C (for check)
6 DF LT O
Latch signal output to the digital filter (IC301)
7 DCMF LT O
Not used (open)
8 DATA O Serial data output to the digital filter (IC301)
9 SHIFT O
SHIFT signal output to the digital filter (IC301)
10 X RES0 O
Not used (open)
11 VSS —
Ground terminal
12 SOUT0 O
Serial data output to the RS-232C (for check)
13 SOUT1 O
Serial data output to the DSD decoder (IC703)
14 SIN0 I
Serial data input from the RS-232C (for check)
15 SIN1 I Serial data input from the DSD decoder (IC703)
16 SCK0 O
Serial data output to the RS-232C (for check)
17 SCK1 O
Serial data output to the DSD decoder (IC703)
18 D0 I/O
19 D1 I/O
20 D2 I/O
21 D3 I/O
22 VSS —
Ground terminal
23 D4 I/O
24 D5 I/O
25 D6 I/O
26 D7 I/O
27 D8 I/O
28 D9 I/O
29 D10 I/O
30 D11 I/O
Two-way data bus with the servo digital signal processor (IC512), ARP (IC702), expander
31 D12 I/O
(IC711), flash memory (IC716) and S-RAM (IC717)
32 D13 I/O
33 D14 I/O
34 D15 I/O
35 VCC —
Power supply terminal (+5V)
36 A0 O
Address signal output to the ARP (IC702)
37 A1 O
Address signal output to the servo digital signal processor (IC512), ARP (IC702), expander
(IC711, 712), flash memory (IC716) and S-RAM (IC717, 718)
38 A2 O
Address signal output to the ARP (IC702), expander (IC711, 712), flash memory (IC716) and
39 A3 O
S-RAM (IC717, 718)
40 A4 O
41 A5 O
42 A6 O
43 A7 O
44 VSS —
Ground terminal
Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)
Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)
Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)
Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)
Address signal output to the ARP (IC702), flash memory (IC716) and S-RAM (IC717, 718)