Sony CDX-M700R, Service Manual

Page: 36 / 82

36
• IC301 HD6432355A22F (DISPLAY CONTROL)
Pin No. Pin Name I/O Pin Description
1, 2 PG3, 4 O Not used. (Open)
3 VSS — Ground
4 NC — Not used. (Open)
5 VCC — Power supply pin (+5 V)
6 – 9 PC0 – 3 O Not used. (Open)
10 VSS — Ground
11 – 14 PC4 – 7 O Not used. (Open)
15 – 18 PB0 – 3 O Not used. (Open)
19 VSS — Ground
20 – 23 PB4 – 7 O Not used. (Open)
24 – 27 PA0 – 3 O Not used. (Open)
28 VSS — Ground
29 – 32 PA4 – 7 O Not used. (Open)
33 SP-LAT I Spectrum analyzer data latch input
34 P66 O Not used. (Open)
35, 36 VSS — Ground
37 P65 O Not used. (Open)
38 BUS-ON I BUS ON control input
39 VCC — Power supply pin (+5 V)
40 – 43 PE0 – 3 O Not used. (Open)
44 VSS — Ground
45 DSP SEL I Digital signal processor select input (Fixed at “H” in this set.)
46, 47 LED SW1, 2 I Operation/display side illumination select control input1, 2
48 PE7 O Not used. (Open)
49 BU-IN I Backup power detection input
50 LINK-OFF O LINK OFF output
51 PD2 O Not used. (Open)
52 ILL-ON O Illumination power control output
53 VSS — Ground
54 AMBER O Not used. (Open)
55 GREEN O Not used. (Open)
56 PD6 O Not used. (Open)
57 BOOT I Display micon write control input
58 VCC — Power supply pin (+5 V)
59 P30 — Not used. (Open)
60 TX/FL-SO O LCD driver serial data output/Flash micon write data output
61 SP-SI I Digital signal processor IC spectrum analyzer data input
62 RX I Flash micon write data input
63 SP-CLK I Digital signal processor IC spectrum analyzer clock input
64 LCD CLK O LCD driver serial clock output
65 VSS — Ground
66 LCD CE0 O LCD driver chip enable output 0
67, 68 VSS — Ground
69 INH O LCD driver inhibit control output
70 LCD-CE1 O LCD driver chip enable output 1
71 P63 O Not used. (Open)
72 – 78 P27 – 21 O Not used. (Open)
79 FL-W O Flash write control output
80 FWE (L) I Flash write enable input
81 RES I System reset input
82 NMI (H) I Non-maskable interruption input
83 ST/SY (H) I Hardware standby input