Read Sony TA-AV571 Service Manual online
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3-9. IC PIN FUNCTION
• IC401 RF SYSTEM CONTROL (µPD78042FGF-036-3BP)
Pin No.
Pin Name
I/O
Function
O
—
—
O
O
O
O
O
O
I
I
—
—
—
O
O
O
O
I
I
I
I
—
—
I
—
—
I
O
O
O
O
O
O
O
L segment signal output
+5V power supply
Ground
Chip enable signal output (for IC101)
Chip enable signal output (for IC201, 202)
Serial clock output
Serial data output
DBFB ON/OFF drive signal output
Power-relay ON/OFF drive signal output
Power check input (Connected to ground)
Reset signal input
Ground
Ground
Ground
Mute control output (for IC701, 702)
Surround speaker relay ON/OFF drive signal output
Front speaker relay ON/OFF drive signal output
Headphone relay ON/OFF drive signal output
PHONES jack in distinction pin
Destination distinction pin (Connected to ground)
Key matrix input
Key matrix input
+5V power supply
+5V power supply
Backup signal input
Not used
Ground
X’tal (5 MHz)
X’tal (5 MHz)
BASS LED drive signal output
TREBLE LED drive signal output
CENTER LED drive signal output
REAR LED drive signal output
DBFB LED drive signal output
DOLBY LED drive signal output
1—7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
DIG2—DIG8
+5V
VSS
CE-FUNC
CE.PRO/DELAY
CLK
DATA
DBFB
POWER-RY
P.CHECK
RESET
VSS
VSS
AVSS
IC.MUTE
SURR.RY
FRONT.RY
HP.RY
HP.SW
VERSION
KEY.2
KEY.1
AVDD
AV.REF
BACKUP
XT2
VSS
X1
X2
BASS LED
TREBLE LED
CENTER LED
REAR LED
DBFB LED
DOLBY LED
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