Ic Pin Function Description - Sony TA-VE150 Service Manual

4-9.

IC PIN FUNCTION DESCRIPTION

• DISPLAY BOARD IC201 µPD78042FGF-076-3B9 (SYSTEM CONTROLLER, FL/LED DRIVER, KEY CONTROL)
Pin No. Pin Name
1 to 7 DIG7 to DIG1
8 VDD
9 S. CLK
10 S. DATA
11 S. CE (VOL)
12 S. CE (LC7822)
13
S. CE (LV1035M)
14 EN3
15 BASS BOOST
PROTECT
16
17 RESET
18 EN1
19 EN2
20 AVSS
21 FAN CLK
22 FAN ON
23 FAN. CNTL
24 MUTING
25 —
26 A/D III
27 A/D II
28 A/D I
29 AVDD
30 AVREF
31 XT1
32 XT2
33 VSS
34 X1
35 X2
36 SIMULATED
37 C. STUDIO
38 PROLOGIC
39 —
40 PHANTOM
41 WIDE
42 NORMAL
43 3-STEREO
44 SYS. POWER
45 ENCODER 2
46 ENCODER 1
47 STOP
48 VSS
49 SIRCS
50, 51 —
I/O
O Grid drive signal output to the fluorescent indicator tube (FL201)
—
Power supply terminal (+5V)
Serial data transfer clock signal output to the M62447SP (IC100), LV1035M (IC300) and
O
LC7822 (IC500)
O
Serial data output to the M62447SP (IC100), LV1035M (IC300) and LC7822 (IC500)
O
Chip enable signal output to the M62447SP (IC100) "H" active
O Chip enable signal output to the LC7822 (IC500) "H" active
O
Chip enable signal output to the LV1035M (IC300) "H" active
O
Enable signal output terminal "L" active Not used
O
LED drive signal output of the BASS BOOST LED (D219) "H": LED on
I
Overload protection input terminal
System reset signal input from the reset signal generator circuit "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O
Enable signal output to the function switch (IC402) "L" active
O
Enable signal output to the function switch (IC401) "L" active
—
Ground terminal (for A/D converter)
I
Fan motor clock signal input terminal
I Fan on signal input for the fan motor drive
O
Fan motor control signal output terminal "L": fan motor on
O
LED drive signal output of the MUTING LED (D218) "H": LED on
I
Not used (open)
I
Key input terminal (A/D input) S205, 206 (5.1 IN, SURROUND MODE keys input)
I Key input terminal (A/D input) S202, 204 (VIDEO, DVD keys input)
I
Key input terminal (A/D input) S201, 203 (CENTER MODE, TV keys input)
—
Power supply terminal (+5V) (for A/D converter)
I
Reference voltage (+5V) input terminal (for A/D converter)
I
Sub system clock input terminal Not used (fixed at "L")
O Sub system clock output terminal Not used (open)
—
Ground terminal
I
Main system clock input terminal (4.19 MHz)
O
Main system clock output terminal (4.19 MHz)
O
LED drive signal output of the SIMULATED LED (D215) "L": LED on
O LED drive signal output of the C.STUDIO LED (D216) "L": LED on
O
LED drive signal output of the PROLOGIC LED (D217) "L": LED on
I
Not used (fixed at "L")
O
LED drive signal output of the PHANTOM LED (D211) "L": LED on
O
LED drive signal output of the WIDE LED (D212) "L": LED on
O LED drive signal output of the NORMAL LED (D213) "L": LED on
O
LED drive signal output of the 3 STEREO LED (D214) "L": LED on
I
System power on/off switch (S200 I/u) input terminal
I
Jog dial pulse input from the rotary encoder (RV201 MASTER VOLUME)
I
Jog dial pulse input from the rotary encoder (RV201 MASTER VOLUME)
I Power down detection signal input from the NJM2103D (IC950) "L": power down
—
Ground terminal
I
Sircs signal input from the remote control receiver (IC202)
I
Not used (fixed at "L")
Function
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