Ic Pin Function - Sony STR-V7700 Service Manual

3-9.

IC PIN FUNCTION

• IC501 TMP87CM75F-6623 (DISPLAY CONTROL)
Pin No. Pin Name
1 NC
2 VG
3 COM CLK
4 ST DATA IN
5 COM DATA
6 ST CE
7 LED LAT
8 POWER ON/OFF
9 STEREO
10 TUNED
11 Vss
12 X OUT
13 X IN
14 RESET
15 XT OUT
16 XT IN
17 GND
18 BACK UP
19 RDS DATA
20 RDS CLK
21 SIRCS IN
22 JOG IN B
23 VOL IN B
24 VOL IN A
25 JOG IN A
26 AUB IN
27 12C CLK
28 12C DATA
29 AUB OUT
30 V
DD
31 Vss
32 EQ LAT
33 VR LAT
34 TA MUTE
35 VIDEO MD
36 KEY CON LAT
37 KEY CON ON/OFF
38 POWER ON/OFF
39 P LOG RELAY
40 KEY IN 0
41 KEY IN 1
42 KEY IN 2
43 SPEANA 0
44 SPEANA 1
45 SPEANA 2
46 SPEANA 3
47 SUFFIX
48 VASS
49 VAREF
50 V
DD
I/O
— Not used
— Power supply (–35V)
O Transfer clock output serial data
I Serial data input
O Serial data output
O Chip enable output
O Latch output to IC504
O H : D542, D543 ON
I Stereo signal input
I Tuned signal input
— Power supply (Ground)
O Oscillator connection terminal (8MHz)
I Oscillator connection terminal (8MHz)
I Reset signal input terminal
O Oscillator connection terminal (32.768kHz)
I Oscillator connection terminal (32.768kHz)
— Not used (Ground)
I AC Power supply off
I RDS DATA input
I RDS clock input
I SIRCS signal input
I JOG dial encoder input
I Volum encoder input
I Volum encoder input
I JOG dial encoder input
I AUB input
I/O 12C clock I/O
I/O 12C data I/O
O AUB output
— Power supply (5V)
— Power supply (Ground)
O Latch output to IC105
O Latch output to IC2002
O Mute output to transistor
O DBFB level control output
O Latch output to IC6003
O H : Key con ON
O L : SP relay ON
O PRO LOGIC RELAY output
I Key data input (A/D converter)
I Key data input (A/D converter)
I Key data input (A/D converter)
I Spectrum analyzer signal input
I Spectrum analyzer signal input
I Spectrum analyzer signal input
I Spectrum analyzer signal input
I Input for model select
— Power supply for analog (Ground)
— Power supply (+5V)
— Power supply (Ground)
– 29 –
Description
L : Mute ON
L : DBFB HIGH