Sony ta-ve170, Service Manual

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4-9. IC PIN FUNCTION DESCRIPTION
•
DISPLAY BOARD IC201
µ
PD78042FGF-120-3B9 (SYSTEM CONTROLLER, FL/LED DRIVER, KEY CONTROL)
Pin No. Pin Name I/O Function
1 to 7 DIG7 to DIG1 O
Grid drive signal output to the fluorescent indicator tube (FL201)
8 VDD —
Power supply terminal (+5V)
9 S. CLK O
Serial data transfer clock signal output to the M62447SP (IC100), LV1035M (IC300) and
LC78212 (IC500)
10 S. DATA O Serial data output to the M62447SP (IC100), LV1035M (IC300) and LC78212 (IC500)
11 S. CE (VOL) O
Chip enable signal output to the M62447SP (IC100) “H” active
12 S. CE (LC7822) O
Chip enable signal output to the LC78212 (IC500) “H” active
13 S. CE (LV1035M)
O
Chip enable signal output to the LV1035M (IC300) “H” active
14 EN3 O
Enable signal output terminal “L” active
15 —
Not used
16
PROTECT I
I
Overload protection input terminal
17 RESET I
System reset signal input from the reset signal generator circuit “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
18 EN1 O
Enable signal output to the function switch (IC402) “L” active
19 EN2 O Enable signal output to the function switch (IC401) “L” active
20 AVSS —
Ground terminal (for A/D converter)
21 FAN CLK I
Fan motor clock signal input terminal
22 FAN ON I Fan on signal input for the fan motor drive
23 FAN. CNTL O
Fan motor control signal output terminal “L”: fan motor on (high speed) “H” : fan low speed
24 MUTING O
LED drive signal output of the MUTING LED (D218) “H”: LED on
25 — I
Not used (open)
26 A/D III I
Key input terminal (A/D input) S205, 206 (5.1 IN, SURROUND MODE keys input)
27 A/D II I
Key input terminal (A/D input) S202, 204 (VIDEO, DVD keys input)
28 A/D I I
Key input terminal (A/D input) S201, 203 (CENTER MODE, TV keys input)
29 AVDD —
Power supply terminal (+5V) (for A/D converter)
30 AVREF I
Reference voltage (+5V) input terminal (for A/D converter)
31 XT1 I
Sub system clock input terminal Not used (fixed at “L”)
32 XT2 O
Sub system clock output terminal Not used (open)
33 VSS —
Ground terminal
34 X1 I
Main system clock input terminal (4.19 MHz)
35 X2 O Main system clock output terminal (4.19 MHz)
36 SIMULATED O
LED drive signal output of the SIMULATED LED (D215) “L”: LED on
37 C. STUDIO O
LED drive signal output of the C.STUDIO LED (D216) “L”: LED on
38 PROLOGIC O LED drive signal output of the PROLOGIC LED (D217) “L”: LED on
39 — I
Not used (fixed at “L”)
40 PHANTOM O
LED drive signal output of the PHANTOM LED (D211) “L”: LED on
41 WIDE O LED drive signal output of the WIDE LED (D212) “L”: LED on
42 NORMAL O
LED drive signal output of the NORMAL LED (D213) “L”: LED on
43 3-STEREO O
LED drive signal output of the 3 STEREO LED (D214) “L”: LED on
44 SYS. POWER I
System power on/off switch (S200 I/
u
) input terminal
45 ENCODER 2 I
Jog dial pulse input from the rotary encoder (RV201 MASTER VOLUME)
46 ENCODER 1 I
Jog dial pulse input from the rotary encoder (RV201 MASTER VOLUME)
47 STOP I Power down detection signal input from the NJM2103D (IC950) “L”: power down
48 VSS —
Ground terminal
49 SIRCS I
Sircs signal input from the remote control receiver (IC202)
50, 51 — I Not used (fixed at “L”)
Pin No. Pin Name I/O Function
52 VDD — Power supply terminal (+5V)
53 FAN ON/OFF
O Fan on/off control “L” : fan on “H” : fan stop
54 MUTE. S. R O
Line muting on/off control signal output for the rear speaker right channel signal
“H”: muting on
55 MUTE. S. L O
Line muting on/off control signal output for the rear speaker left channel signal
“H”: muting on
56 FUNC. MUTE O
Line muting on/off control signal output for the front and center speakers signal
“H”: muting on
57 VERSION I
Setting terminal for the version (fixed at “L” in this set)
58 W. RY O
Woofer on/off relay drive signal output terminal “H”: relay on
59 SP. RY O
Front speaker on/off relay drive signal output terminal (for protect) “H”: relay on
60 S. RY O
Rear speaker on/off relay drive signal output terminal (for protect) “H”: relay on
61 C. RY O
Center speaker on/off relay drive signal output terminal (for protect) “H”: relay on
62 POWER. RY O
Power on/off relay drive signal output terminal “H”: relay on (power on)
63 to 70 S14 to S7 O
Segment drive signal output to the fluorescent indicator tube (FL201)
71 VLOAD —
Power supply terminal (–24V) (for FL drive)
72 to 77 S6 to S1 O
Segment drive signal output to the fluorescent indicator tube (FL201)
78 — O
Not used (open)
79, 80 DIG9, DIG8 O
Grid drive signal output to the fluorescent indicator tube (FL201)
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
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