Technics SA-EH760

13.1. IC901 (LC8A524A5N28): / System Control/FL Drive
Pin
No.
Terminal
Name
I/O Function
1 CHECK O Clock check signal output
2 LC72 DI O PLL data signal output
3 LC72 CE O Chip enable signal output
4 LC72 DO
/ST
I IF count data/stereo detect
signal input
5 LC72 CK O Clock signal output
6 RL1 O Speaker select signal output
7 RL2 O Speaker select signal output
8 ST/
AV6CH
- Not used, open
9 SEL
TUNER
O Tuner select signal output
10 SEL/
TUNER
I
Tuner select signal input
(Not used, connected to V
DD
)
11 AC IN I Power failure detect signal input
12 RESET I Reset signal input
13 X IN I Oscillator connected terminal
(32.7 kHz)
14 X OUT O
15
V
SS
- GND terminal
16 XC IN I Oscillator connected terminal (6
MHz)
17 XC OUT O
18
V
DD
1
I Power supply terminal
19 KEY TU I Operation key signal input
20 KEY
KARAOKE
I Operation key signal input
21 SH REQ I Request signal input from
Sound Processor
22
NC(GND)
- Not used, connected to GND
23 VR
JOGB
I Volume control signal input
24 VR
JOGA
25 MIC DET I
Microphone connecting detect
signal input
26 HP SW I
Headphone connecting detect
signal input
27 RDS
CLK
I
RDS clock signal input
(Connected to GND)
28 RDS
DATA
I RDS data signal input
(Connected to GND)
29
REMOCON
I Remote control signal input
30 NC - Not used, open
18