Sony CDX-C8850 Service Manual page 30

• IC701 HD6432355A08F (DISPLAY CONTROL) (MAIN BOARD)
Pin No. Pin Name
1, 2 PG3, 4
3 VSS
4 NC
5 VCC
6 – 9 PC0 – 3
10 VSS
11 – 14 PC4 – 7
15 – 18 PB0 – 3
19 VSS
20 – 23 PB4 – 7
24 – 27 PA0 – 3
28 VSS
29 PA4/IRQ4
30 PA5/IRQ5
31 PA6/IRQ6
32 PA7/IRQ7
33 SP-LAT
34 P66/IRQ2
35, 36 VSS
37 P65/IRQ1
38 BUS-ON
39 VCC
40 CD/MD
41 – 43 PE1 – 3
44 VSS
45 TIR IND
46, 47 PE5, 6
48 MD LOCK
49 BU-IN
50 LINK-OFF
51 PD2
52 ILL-ON
53 VSS
54 DOOR SW
55 NCO
56 PD6
57 BOOT
58 VCC
59 NC
60 TX/FL-SO/LCDDATA
61 SP-SI
62 RX
63 SP-SCK
64 LCDCLK
65 VSS
66 LCDINH
67, 68 VSS
69 LCDCE0
70 LCDCE1
71 P63
72 – 78 P27 – 21
79 FL W
30
I/O
O Not used. (Open)
— Ground
— Not used. (Open)
— Power supply pin (+5 V)
O Not used. (Open)
— Ground
O Not used. (Open)
O Not used. (Open)
— Ground
O Not used. (Open)
O Not used. (Open)
— Ground
O Not used. (Open)
O Not used. (Open)
O Not used. (Open)
O Not used. (Open)
I Digital signal processor spectrum analyzer data latch input
O Not used. (Open)
— Ground
O Not used. (Open)
I SONY BUS ON input
— Power supply pin (+5 V)
I CD/MD mechanism deck setting input ("L" : CD mechanism deck)
O Not used. (Open)
— Ground
O TIR indicator LED drive output
O Not used. (Open)
I MD lock signal input ("L" : unlock)
I Back-up power supply detection input
O LINK OFF output (Not used in this set.)
O Not used. (Open)
O Illumination power supply control output
— Ground
I DOOR switch input ("L" : close, "H" : open)
— Not used. (Open)
O Not used. (Open)
I FLASH write mode detection input
— Power supply pin (+5 V)
— Not used. (Open)
O LCD driver serial data/FLASH rewriting serial data output
I Digital signal processor spectrum analyzer data input
I FLASH rewriting serial data input
I Digital signal processor spectrum analyzer data serial clock input
O LCD driver/serial clock output
— Ground
O LCD driver inhibit control output
— Ground
O LCD chip enable output
O LCD chip enable output
O Not used. (Open)
O Not used. (Open)
O FLASH write control output
Pin Description