Sony SCD-XB940 Service Manual page 68

• MAIN BOARD IC612 CXD9515Q (EXPANDER)
Pin No. Pin Name
1 VDD
2 NC
3 RST
4 XFBSY
5 NFBSY
6 NFCLE
7 NFALE
8 NFCE
9 NFRE
10 NFWE
11 NFWP
12 to 19 NFD0 to NFD7
20 VDD
21 GND
22 XIFBSY
23 XECS
24 XEWC
25 XEBSY
26 DACRST
27 57RST
28 01CS
29, 30 01IT0, 01IT1
31 01RST
32 KRRST
33 XKRDY
34 KARLT
35 CLAPBSY
36 CLAPSW1
37 CLAPSW0
38 OTASUKE
39 NC
40 VDD
41, 42 GND
43 NC
44 SMC
45 SIN
46 SOT
47 SCK
48 AMC
49 MAMUTE
50 MICMUTE
51 EUROV/Y
52 RGBSEL
53 VS
54 FCSON
18
I/O
—
Power supply terminal (+3.3V)
— Not used (open)
I
Reset signal input from the system controller (IC605) "L": reset
I
Busy signal input terminal "L": busy
I
Not used (fixed at "H")
O Not used (open)
O
Not used (open)
O
Not used (open)
O
Not used (open)
O Not used (open)
O
Not used (open)
I/O
Not used (open)
—
Power supply terminal (+3.3V)
— Ground terminal
I
Busy signal input from the display controller (IC203) "L": busy
O
Chip select signal output to the EEPROM (IC600)
O
Write control signal output to the EEPROM (IC600)
I Busy signal input from the EEPROM (IC600) "L": busy
O
Not used (open)
O
Not used (open)
O
Not used (open)
I Not used (open)
O
Not used (open)
O
Not used (open)
I
Not used (fixed at "H")
O Not used (open)
I
Not used (fixed at "H")
O
Not used (open)
O
Not used (open)
I Not used (fixed at "H")
—
Not used (open)
—
Power supply terminal (+3.3V)
—
Ground terminal (digital system)
—
Not used (open)
I Not used (fixed at "L")
I
Not used (fixed at "L")
O
Not used (open)
I
Not used (fixed at "L")
I Not used (fixed at "L")
O
Not used (open)
O
Not used (open)
O
Not used (open)
O Not used (open)
O
Not used (open)
I
Function control signal input from the servo digital signal processor (IC607)
Description