Panasonic SA-HT920P Service Manual page 49

24 Terminal Function of ICs
24.1 IC2018 (C2CBJG000474): Operation CPU
Pin No. Terminal Name
1 LOAD
2 OP/CL REV
3 OP/CL FWD
4 OPEN SW
5 POSSITION
6 NC
7 TUNER FWD
8 BYTE
9 CNVSS
10 XCIN
11 XCOUT
12 RESET
13 XOUT
14 VSS
15 XIN
16 VCC
17 /NMI
18 RMT
19 SYNC
20 TURN REW
21 PULSE
22 SEL
23 EDA
24 ECK
25 ECS
26 PWM
27 SD
28 TU ST/DO
29 TU SCL(PLL CK)
30 TU SDA(PLL DA)
31 TU FM DET(PLL CE) I Tuner FM detect signal input
32 V MUTE2
33 V MUTE1
34 MUTE S
35 DVD CMD
36 DVD STA
37 DVD CK
38 WIDE1
39 MUT FRNT
40 MUTE C
41 EPM
42 SUB MUTE
43 HP MUTE
44 DVD MUTE
45 V MUTE3
46 VMIX Ctrl
47 MUTE L
48 VOL DA
I/O
I UP/DOWN switch signal input
O Reverse control signal output for OPEN/CLOSE motor
O Forward control signal output for OPEN/CLOSE motor
I Rotary tray OPEN switch signal input
I Position detection sensor signal input
- Not used, open
O Forward control signal output for turn motor
- GND
- GND
- Sub clock input (32.768kHz)
- Sub clock output (32.768kHz)
I System reset signal input
- Main clock output (8.0MHz)
- GND
- Main clock input (10.0MHz)
- Power supply terminal (5V)
I Connect to VCC, external interrupt I/P
I Remocon signal input
I AC failure detection input
O Reverse control signal output for turn motor
I Speed detection sensor signal input
I Model select signal input
I/O EEPROM data in/output
O EEPROM clock output
O EEPROM latch output
O Pulse width modulation output for the changer
I Tuner signal detect input
I Stereo indicator from Tuner/ DO output of Tuner IC
O Clock output for Tuner
O Data output for Tuner
O Mute signal 2 for video output
O Mute signal 1 for video output
O Mute signal output for surround Audio signal
O CDM signal output for the DVD module
I Status signal input from the DVD module
I CLK signal input from the DVD module
O Wide function control signal output
O Mute signal output for Front speaker
O Mute signal output for Center speaker
I Signal output for Flash
O Mute signal output for Subwoofer
O Mute signal output for Headphone
I Signal output from DVD module control mute circuit
O Mute signal 1 for video output
O Control signal output for the video signal mix
O Mute signal output for the line output
O Data output for 6ch VOL ASP
Function