Ic Pin Function; Ic401 Μpd78042Fgf-036-3Bp (Rf System Control) - Sony TA-AV571 Service Manual

3-9. IC PIN FUNCTION

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