Terminal Function Of Ic's - Technics SL-DV250 Service Manual

19. Terminal Function of IC's

19.1. IC401 (C2BBFD000307): SYSTEM CONTROL
Pin Mark I/O
No. Division
1 VCC I
2 VREF
3 AVSS —
4 MUTE O
5 PWCONT O
6 SYNC I
7 C/SW O
SEL
8 B_REQ I
9 B_CS O
10 B_CLK O
11 DATA O
O
12 DATA I I
13 WIDE2 O
14 WIDE1
15 CNV —
SS
16 TEST I
17 E-CS O
18 RESET I
19 XIN I
20 XOUT O
21 V —
SS
22 LED- O
STB
23 LED/ / O
E-CLK
24 LED/ / O
E-
DATA
Function
Connected to power supply
Connected to GND
Mute control output terminal
DVD module power supply
control output terminal
Power failure detect signal
input terminal
Center/sub woofer speaker
select signal output terminal
Serial communication
request signal input terminal
Serial communication chip
select signal output terminal
Serial communication clock
signal output terminal
Serial communication data
signal output terminal
Serial communication data
signal input terminal
Select control output
terminal for wide picture
Connected to GND
Test mode input terminal
Not used, open
Reset signal input terminal
Crystal oscillator input
terminal (f=8MHz)
Crystal oscillator output
terminal (f=8MHz)
Connected to GND
Serial signal output to LED
drive
Serial signal output terminal
to LED drive or EEPROM
Serial signal output terminal
to LED drive or EEPROM
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