Sony ZS-M7 Service Manual page 42

DG BOARD (2/2) IC502 SYSYTEM CONTROL (RU8X12MF-0021)
Pin No. Pin name
1 DAOUT0
2 DAOUOT1
3 KEY0
4 KEY1
5 KEY2
6 CHACK IN
7 PACK IN
8 PACK OUT
9
10
11 AVSS
12 X INT
13 PDOWN
14
15 SQSY
16 DQSY
17
18
19
________
20 SYS-RST
21 TEST
22 +3.3V
23 VBAT
24 XOUT-T
25 XINT-T
26 GND
27 XOUT
28 XIN
29 EXEM
30 S1
31
32 SENS
33 SHOCK
34
35
36 STB
37 REC P
38 PB P
39 LD LOW
40 NC
41 MNT2
42 MNT3
43 LEDO
44
45
46 RST LOW
47 GND
48 +3.3V
49 SNG/CHG
50 JOG1
I/O
– not used (OPEN).
– not used (OPEN).
– Reserved ("H" level).
– Reserved ("H" level).
– Reserved ("H" level).
I Detection input from chucking-in switch (S685).
I Detection input from back-in switch (not used).
I Detection input from back-out switch (S686).
– not used (ground connection).
– not used (ground connection).
– ground for analog.
I Interrupt status input from digital signal processor IC (IC121).
I Power cutoff signal input from master control IC (IC801).
– Reserved (ground connection).
I Subcode Q-SYNC (SCOR) input from digital signal processor IC (IC121).
I Digital-in U-bit format subcode input from digital signal processor IC (IC121).
– Reserved (ground connection).
– Reserved (ground connection).
– Reserved (ground connection).
I System reset input pin "L": Reset.
I Test mode pin "L": Normal mode, "H": Test mode.
– Power supply terminal (VCC).
I Power supply pin for internal RTC and RAM.
O Sub-clock connector pin (32.768kHz).
I Sub-clock connector pin (32.768kHz).
– Power supply terminal (ground).
O Main clock connector pin (12MHz).
I Main clock connector pin (12MHz).
I Switch pin for External ROM mode and Internal ROM mode.
– not used (OPEN).
– Reserved (ground connection).
I Internal status (SENSE) input from digital signal processor IC (IC121).
I Track-jump detection signal input from digital signal processor IC (IC121).
– Reserved (ground connection).
– Reserved (ground connection).
O Power ON/OFF control signal output.
I Detection input from REC switch (S688).
I Detection input from PB switch (S687).
O Loading motor control signal output.
– not used (OPEN).
I Monitor 2 input from digital signal processor IC (IC121).
I Monitor 3 input from digital signal processor IC (IC121).
– not used (OPEN).
– Reserved (ground connection).
– Reserved (ground connection).
– not used (OPEN).
– Power supply terminal (ground).
– Power supply terminal (VCC).
– Reserved (ground connection).
– Reserved (ground connection).
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Description