22
Pin No.
Pin Name
I/O
Description
39
PLL-CE
O
PLL chip enable signal output to the FM/AM PLL (IC130) “H” active
40
—
O
Not used (open)
41
FM-ON
O
FM system power supply on/off control signal output terminal “H”: FM power on
42
LCD-SO
O
Serial data output to the liquid crystal display driver (IC900)
43
LCD-CE
O
Chip enable signal output to the liquid crystal display driver (IC900) “H” active
44
LCD-CKO
O
Serial data transfer clock signal output to the liquid crystal display driver (IC900)
45
VOL-SO
O
Serial data output to the electrical volume (IC400)
46
VOL-CE
O
Chip enable signal output to the electrical volume (IC400) “H” active
47
VOL-CKO
O
Bus clock signal output to the electrical volume (IC400)
48
AMP-MUTE
O
Muting on/off control signal output to the power amplifier (IC500) “L”: muting on
“L” is output when the front panel is removed
49
AMP-ON
O
Standby on/off control signal output to the power amplifier (IC500)
“L”: standby mode, “H”: amplifier on “L” is output when the front panel is removed
50
MUTE
O
Audio line muting on/off control signal output terminal “H”: muting on
51, 52
—
O
Not used (open)
53
TU-ON
O
Tuner system power supply on/off control signal output terminal “H”: tuner power on
54, 55
—
O
Not used (open)
56
ACC-IN
I
Accessory detection signal input terminal “L”: accessory on
57 to 59
—
O
Not used (open)
60
SYS-RST
O
Reset signal output to the SONY bus interface (IC800) “L”: reset
61
BUS-ON
O
Bus on/off control signal output to the SONY bus interface (IC800) “L”: bus on
62 to 67
—
O
Not used (open)
68
POWER-ON
O
Main system power supply on/off control signal output terminal “H”: power on
“L” is output when the front panel is removed
69 to 75
—
O
Not used (open)
76
ILL
O
Power on/off control signal output of the illumination LED and liquid crystal display driver
(IC900) “H”: power on
77
—
O
Not used (open)
78
RE0
I
79
RE1
I
80
AD-ON
A/D converter power control signal output terminal
When the KEYACK (pin
wh
) that controls reference voltage power for key A/D conversion input
is active, “L” is output from this terminal to enable the input
Destination setting terminal (fixed at “H” in this set)
Destination setting terminal (fixed at “L” in this set)
Frequency select switch (S3) input terminal
“L”: AM 9 kHz/FM 50 kHz step, “H”: AM 10 kHz/FM 200 kHz step
Dial pulse input of the rotary encoder (S900)
(for VOLUME/BASS/TREBLE/BALANCE/FADER control)
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