Ic Pin Function - Sony STR-W555 Service Manual

5-21. IC PIN FUNCTION

• IC501 SYSTEM CONTROL (uPD780016AYGF-012-3BA)
Pin Name
Pin No.
1 CLK
2 LEVEL A
3 LEVEL B
4 PROLOGIC RLY
5 DBFB B2
6 DBFB B1
7 TA MUTE
8 GND
9 TEST
10 X2
11 X1
12 VDD
13 XT2
14 XT1
15 RESET
16 RDS CLK
17 RDS DATA
18 VOL A
19 VOL B
20 JOG A
21 JOG B
22 SPEANA CONT
23 VDD
24 A VDD
25 VACS
26 SPEANA0
27 SPEANA1
28 KEY0
29 KEY1
30 KEY2
31 KEY3
32 ACCUT
33 A VSS
34 GND
35 FL DATA
36 FL CLK
37 FL LAT
38 FL RESET
39 GND
40 VSS
• Abbreviation
FL : Fluorescent indicator tube
I/O
O Not used
O Surround level A signal output
O Surround level B signal output
O Not used
O DBFB level 2 signal output
O DBFB level 1 signal output
O Mute signal output
— Ground
— Test terminal (Connected to ground)
O
X'tal (5MHz)
I
— Power supply (+5V)
O
X'tal (32kHz)
I
I Reset signal input
I RDS clock input
I RDS data input
I
Rotary encoder (VOLUME) pulse input
I
I
Rotary encoder (MULTI JOG STATION) pulse input
I
O Spectrum analyzer control output
— Power supply (+5V)
— Analog power supply (+5V)
I Audio input for VACS control
I
Spectrum analyzer data input
I
I
I
Key data input
I
I
I Back up signal input
— Analog ground
— Ground
O FL data output
O FL clock output
O FL latch output
O FL reset output
— Ground
— Ground
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Function