Read Sony MHC-EX100AV / TA-EX100 Service Manual online
— 7 —
3-2. IC PIN FUNCTION
• IC601 SYSTEM CONTROL (HD6433927B97F)
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I
—
—
—
—
—
I
O
I
I
O
O
O
O
O
O
O
O
—
—
I
I
O
—
O
O
O
—
O
—
—
O
O
O
O
O
O
O
O
VOLUME IN
KEY 0 to KEY 2
AVss
TEST
X2
X1
Vss
OSC 1
OSC 2
RESET
NMI
POWER
SP RELAY
PROLOGIC RELAY
DIRECT
VOL-UP
VOL-DOWN
LINE MUTE
–20 dB MUTE
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—
SIRCS
AUB IN
AUB OUT
—
STB
CLK
DATA
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MIC IN
KARAOKE PON
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A FUNC 0
A FUNC 1
A FUNC 2
V FUNC 0
V FUNC 1
2DB
4DB
8DB
Not used. (Ground)
Key matrix input.
Ground
Ground
Not used. (open)
+5V power supply.
Ground
Clock (10 MHz).
System reset input.
AC OFF detect.
Power relay output.
Speaker relay output. (power ON/OFF)
Speaker relay output. (PROLOGIC ON/OFF)
Speaker relay. (DIRECT)
MIC VOL up/down output.
LINE mute output. (power OFF “High”)
–20 dB mute output.
Not used. (open)
Not used. (Ground)
SIRCS signal input
Audio bus input.
Audio bus output.
Not used. (Ground)
LED strobe output.
LED clock output.
LED serial data output.
Not used. (Ground)
Microphone detect control. (mic on “Low”)
Not used. (Ground)
Not used. (Ground)
Audio function control output.
1
2 to 4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27 to 31
32
33
34
35 to 38
39
40
41 to 46
47
48
49
50
51
52
53
54
Pin Name
I/O
Pin No.
Function
Video function control output.
ATT control.
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