Aiwa TV-SE141 Service Manual page 26

IC DESCRIPTION
IC, TMP87CP38N-LA71
Pin Name
Pin No.
1 VSS
2 POWER
3 LCK
4 SCLK
5 SDT
6 Q SUR
7 N RESET
8 BBS
9 VOL
10 EXT
11 SCL1
12 SDA1
13 SD
14 KEY
15 DOWN1
16 DOWN2
17 AFC
18 BIAS DET
19 SGV
20 SUFFIX
21 VSS
22 R
23 G
24 B
25 OSD Y
26 H-SYNC
27 V-SYNC
28 OSC1
29 OSC2
30 TEST
31 X-IN
32 X-OUT
33 RESET
34 L-MUTE
35 SP MUTE
36 RMC
37 SCL0
38 SDA0
39 SEL1
40 SEL2
41 WAKEUP
42 VDD
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I/O
– GND.
O Power control output (H = ON).
O Serial latch clock.
O Serial clock.
O Serial data.
O Q Surround switching (H = ON).
O NICAM reset (H= ON/L = Reset).
O Bass boost / S-woofer (L= Boost).
O Main volume control output.
I EXT bus sw (L= EXT).
O I 2 C-Bus CH1 clock output.
2
O I C-Bus CH1 data output.
I SYNC detect input.
I Key input (5V= Key OFF).
I Power condition 1 (L/Mid = Good, H = Bad).
I Power condition 2 (Mid = Good, L/H = Bad).
I Tuner AFT voltage input.
I Source voltage (Function/RGB).
O Video signal generate (Factory) output.
I Feature select (initial) input.
– GND.
O OSD red output.
O OSD green output.
O OSD blue output.
O OSD blanking output.
I OSD H SYNC input.
I OSD V SYNC input.
– OSD dot clock.
– OSD dot clock.
– GND.
I 8 MHz clock input.
O 8 MHz clock output.
I Reset input (L= Reset).
O Line out mute output (H = Mute).
O Speaker mute output (H = Mute).
I Remote control signal input.
O I 2 C-Bus CH2 clock output.
O I 2 C-Bus CH2 data output.
O Input select sw1.
O Input select sw2.
O ON timer LED (H= Timer on.)
– VDD.
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Description