Sony HCD-RV777D Service Manual page 46

HCD-RV777D/RV888D/RV999D
• IC101 µPD780232GC-504-8BT-A (SYSTEM CONTROL) (PANEL Board)
Pin No. Pin Name
1 VDD
2 VSS
3 X1
4 X2
5 IC
6 RESET
7 S-CLK
8 S-IN
9 S-OUT
10 to 14 NC-L
15 VOL-A
16 VOL-B
17 NC-L
18 AVSS
19 NC-L
20 to 22 KEY3 to KEY1
23 VSS
24 AVDD
25 VDD
26 to 33 NC-L
34 to 39 PS07 to PS12
40 MULTI/I-BASS
41 NC
42, 43 NC-L
44 to 58 S1 to S15
59 VDD
60 V.LOAD
61 to 66 S16 to S21
67 to 80 G1 to G13
46
I/O
— Power supply pin (+3.3 V)
— Ground pin
I System clock signal input (5 MHz)
I System clock signal input (5 MHz)
I Directly connect to ground.
I Reset signal input (active L)
I Serial clock signal input
I Serial data in signal input
O Serial data out signal output
O Not used in this set. (Fixed at L.)
I VOLUME encoder in A signal input
I VOLUME encoder in B signal input
I Not used in this set. (Fixed at L.)
— Analog ground pin
I Not used in this set. (Fixed at L.)
I Key in signal input
— Ground pin
— Analog power supply pin (+3.3 V)
— Power supply pin (+3.3 V)
I Not used in this set. (Fixed at L.)
O Illumination LED drive control signal output (L: OFF, H: ON)
O Not used in this set. (Fixed at L.)
O Not used. (Open)
O Not used in this set. (Fixed at L.)
O FL segment control signal output (L: OFF, H: ON)
— Power supply pin (+3.3 V)
I V.LOAD signal input
O FL segment control signal output (L: OFF, H: ON)
O FL grid control signal output (L: OFF, H: ON)
Pin Description