Ic Pin Function - Sony SAVA-29 Service Manual

3-13. IC PIN FUNCTIONS
• IC501 SYSTEM CONTROL (uPD78043FGF-046-3B9) (DISPLAY BOARD)
Pin No. Pin Name
1 to7 7G to 1G
8 VDD
9 POWER RY
10 SUR CE
11 VOL CSW CE
12 VOL LR CE
13 VOL3 LAT
14 S CLOCK
15 S DATA
16 FL SW
17 RESET

18

19
20 AVSS
21 LR MUTE
22 C MUTE
23 S MUTE
24 SW MUTE
25 POWER SW
26 KEY 1
27 KEY 0
28 AUTO SW
29 AVDD
30 AVREF
31 STOP
32 XT2
33 VSS
34 X1
35 X2

36
37 REAR POWER
38 S/W BOOST
39 U SET SW
40 C EXT SW
41 TV/SW

42

43
44 SIRCS

45

46

47
48 IC
49 STANDBY LED
50 READY LED
51 OPERATE LED
52 VDD
53 to 70 S24 to S7
71 VLOAD
72 to 77 S6 to S1
78 to 80 10G to 8G
• Abbreviation
FL : Fluorescent indicator signal
I/O
O FL grid output signal

Power supply (+5 V)
O Power relay control output
O Surround IC (LA2787, LV1017) control, chip enable output
O CSW channels volume IC (LC75373) control, chip enable output
O LR channels volume IC (LC75373) control, chip enable output
O Rear volume IC (TC9210) control, latch output
O Clock output
O Data output
O FL power supply switch
I Reset input

Not used (Connected to ground)

Not used (Connected to ground)

A/D converter ground (Connected to ground)
O LR mute
O Center mute
O Rear mute
O Sub woofer mute
I POWER key detection
I Key input 1
I Key input 0
I Auto power signal detection input

A/D converter analog power supply (+5 V)

A/D converter reference voltage
I Stop detection

Not used (Not connected)

Ground (Connected to ground)

External crystal oscillator is connected to this terminal

External crystal oscillator is connected to this terminal

Not used (Not connected)
O Wireless rear power transmission control output
O Sub woofer volume adjustment control output
I SAVA-29/59 discrimination input
I External/internal center speaker selection control input
I Control S (TV) select control input

Not used (Connected to ground)

Not used (Connected to ground)
I SIRCS data input

Not used (Connected to ground)

Not used (Connected to ground)

Not used (Connected to ground)

Not used (Connected to ground)
O STANDBY LED ON/OFF control output
O READY LED ON/OFF control output
O OPERATE LED ON/OFF control output

Power supply (+5 V)
O FL segment output signal

FL pull down voltage (–35 V)
O FL segment output signal
O FL grid output signal
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Description