– 27 –
1
O-K-SCAN
O
Switch scan timing output.
2
O-PLL-CE
O
PLL IC chip enable output.
3
O-DATA(M)
O
Data output for sound.
4
I-TUNE/IFC
I
TUNE-IF count serial data input.
5
O-STB(M)
O
Latch strobe output for sound CTRL.
6
O-MUTE
O
System mute ON/OFF output.
7
O-CLK(M)
O
Clock output.
8
O-OSD-CE
-
Not used.
9
O-POWER
O
System power supply ON/OFF output.
10
O-DSP-CE
-
Not used.
11
O-STB-31
O
GEQ IC chip enable output.
12
I-TM-BASE
I
Reference clock input for timer watch.
13
O-TC4094-CE
O
Shift register chip enable output.
14
O-A45-CS
O
AK4527 chip select.
15
O-A45-DATA
O
AK4527 control data.
16
O-A45-CLK
O
AK4527 control data clock.
17
IC
-
Connected to GND.
18
VSS
-
GND.
19
VDD
-
Power supply input.
20
O-Y917-RST
O
YSD917 initial clear output.
21
O-Y917-CS
O
YSD917 chip select output.
22
O-Y902-SCK
O
YSS902 & YSD917 bit clock output.
23
O-Y902-SI
O
YSS902 data output.
24
I-Y902-SO
I
YSS902 data input.
25
O-Y902-CS
O
YSS902 chip select output.
26
O-Y902-CSB
O
YSS902 sub DSP chip select output.
27
O-A45-PDN
-
Not used.
28
I-RDS-CLK
-
Not used.
29
I-RDS-DATA
-
Not used.
30
RESET
I
Reset input.
31
O-CONT1
O
Master VOL CTRL output for surround left & right.
32
O-CONT2
O
Master VOL CTRL output for center & sub woofer.
33
OSD-CLK
-
Not used.
34
I-RMC
I
System remote control signal input.
35
OSD-DATA
-
Not used.
36
C-SHIFT
O
Micon clock shift output.
37
VDD1
-
Power supply input.
38, 39
X2, X1
-
4.19 MHz oscillator circuit.
40
VSS1
-
GND.
41
AVDD
-
Power supply input.
42
HOLD
I
Power failure detected input "L" to stop and hold memory.
43
I-RE-VOL
I
Rotary encoder signal input (Main vol L & R).
IC DESCRIPTION
IC, UPD780228GF-071
Pin No.
Pin Name
I/O
Description
Summary of Contents for AV-D57
Page 11: ... 11 SCHEMATIC DIAGRAM 1 MAIN 1 2 ...
Page 12: ... 12 SCHEMATIC DIAGRAM 2 MAIN 2 2 ...
Page 14: ... 14 SCHEMATIC DIAGRAM 3 FRONT ...
Page 16: ... 16 SCHEMATIC DIAGRAM 4 DIGITAL ...
Page 18: ... 18 SCHEMATIC DIAGRAM 5 VOLUME VIDEO ...
Page 20: ... 20 SCHEMATIC DIAGRAM 6 PT ...
Page 22: ... 22 SCHEMATIC DIAGRAM 7 TUNER ...
Page 23: ... 23 IC BLOCK DIAGRAM ...
Page 24: ... 24 ...
Page 25: ... 25 GRID ASSIGNMENT FL BJ759GK GRID ASSIGNMENT AND ANODE CONNECTION ...
Page 26: ... 26 ANODE CONNECTION ...