Ic Pin Function Description - Sony SAVA-500 Service Manual

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5-12. IC PIN FUNCTION DESCRIPTION

• DISPLAY BOARD IC501 µPD78043FGF-059-3B9 (SYSTEM CONTROLLER)
Pin No. Pin Name
1 to 7 7G to 1G
8 VDD
9 POWER RY
10 SUR CE
11 VOL LR CE
12 VOL CSW CE
13 VOL SR CE
14 S CLOCK
15 S DATA
16 —
17 RESET
18 SEL A
19 SEL B
20 AVSS
21 LR MUTE
22 C MUTE
23 S MUTE
24 SW MUTE
25 KEY1
26 KEY0
27 FAN SIG IN
28 AUTO SW
29 AVDD
30 AVREF
31 —
32 XT2
33 VSS
34 X1
35 X2
36 —
37 REAR POWER
38 U SET SW
39, 40 —
41 FAN DRIVE
*1 Input select control
Function
TV
Terminal
SEL A (pin !•)
"L"
SEL B (pin !ª)
"L"
24
I/O
O
Gird drive signal output to the fluorescent indicator tube (FL501)
—
Power supply terminal (+5V)
O Relay drive signal output for the power on/off control "H": relay on (power on)
Serial chip enable signal output to the dolby surround pro-logic circuit (IC400, 401)
O
"H" active
O
Serial chip enable signal output to the LC75373ED (IC201) (for L/R-ch signal)
Serial chip enable signal output to the LC75373ED (IC203) (for 5.1ch input center/woofer signal)
O
"H" active
Serial chip enable signal output to the LC75373ED (IC202) (for wireless rear speaker signal)
O
"H" active
Serial data transfer clock signal output to the dolby surround pro-logic circuit (IC400, 401) and
O
LC75373ED (IC201 to IC203)
Serial data output to the dolby surround pro-logic circuit (IC400, 401) and LC75373ED (IC201 to
O
IC203)
O
Not used (pull down)
System reset signal input from the reset signal generator (IC502, Q501)
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O
Input select signal output to the MC14052BCP (IC101) *1
O
Input select signal output to the MC14052BCP (IC101) *1
— Ground terminal (for A/D converter)
O
Line muting on/off control signal output for the front side speaker "L": muting on
O
Line muting on/off control signal output for the center side speaker "L": muting on
O
Line muting on/off control signal output for the rear side speaker "L": muting on
O Line muting on/off control signal output for the sub woofer speaker "L": muting on
Key input terminal (A/D input)
I
S501 to S504 (INPUT, S.WOOFER, SURROUND, CENTER MODE keys input)
I
Key input terminal (A/D input) S505, S506 (MASTER VOL +/– keys input)
I
Not used (fixed at "L")
I
TV audio detect signal input for the auto power on/off
— Power supply terminal (+5V) (for A/D converter analog system)
I
Reference voltage (+5V) input terminal (for A/D converter)
I
Not used (fixed at "L")
—
Not used (fixed at "L")
— Ground terminal
I
Main system clock input terminal (5 MHz)
O
Main system clock output terminal (5 MHz)
O
Not used (pull down)
O Power on/off control signal output for the wireless rear speaker "H": power on
I
Setting terminal for the model Fixed at "L" in this set
O
Not used (pull down)
O
Not used (pull down)
VIDEO AUX
"H" "L"
"L" "H"
05/28/2012
Description
OFF
"H"
"H"
World of Free Manuals
"H" active
"L": reset