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Pin No.
Pin Name
I/O
"H" output: LCD unit and key confusion, power off
54
LCD CTL
O
"L" output: LCD unit and key confusion, power on
55, 56
NCO
O
Not used in this set. (Open)
57
DSSA
O
DSSA on/off change signal output (Cut off rear)
58
PANEL SW
I
Front panel attachment detection signal input "L": with panel, "H": without panel
59
DIAG
I
Condition signal input from the power IC
60
VOLATT
O
Electronic volume attenuate control signal output
61, 62
NCO
O
Not used in this set. (Open)
63
VSS2
—
Ground pin for I/O port
64
TU ATT
O
Tuner mute control signal output
65
NCO
O
Not used in this set. (Open)
66
NS MASK
O
Noise mask signal output
67
EEP CKO
O
Serial clock signal output for EEPROM communication
68
EEP SIO
I/O
Serial data signal input/output for EEPROM communication
69
NCO
O
Not used in this set. (Open)
70
AMPSTB
O
Power regulator IC standby signal output
71 to 73
NCO
O
Not used in this set. (Open)
74
NCO
O
Not used in this set. (Open)
"H": Front panel illumination green (Initial value)
75
COL SEL
I
"L": Front panel illumination amber (Initial value)
76
LCDSO
O
Serial data signal output to the LCD driver
77
LCDCE
O
Chip enable signal output to the LCD driver
78
LCDCKO
O
Serial clock signal output to the LCD driver
79
I2C SIO
I/O
I2C BUS serial data signal input/output
80
NCO
O
Not used in this set. (Open)
81
I2C CKO
O
I2C BUS serial clock signal output
82
DAVN
I
RDS data block synchronization detection signal input
83
SIRCS
I
Remote control signal input
84
NCO
O
Not used in this set. (Open)
85
BEEP
O
Beep signal output to the power amp
86 to 88
NCO
O
Not used in this set. (Open)
89
VDD3
—
Power supply pin for I/O port (+3.3 V)
"L" input: two color change/initial slave color: amber
90
COL SW
I
"H" input: one color/slave color: white
91
VSS3
—
Ground pin for I/O port
92
QUALITY
I
Noise detection signal input
93
VSM
I
S meter voltage detection signal input
94
KEYIN1
I
Key signal input 1
95
KEYIN0
I
Key signal input 0
96
NCO
O
Not used in this set.
97
KEYIN2
I
Key signal input (EJECT, OFF, SOURCE switch)
98
RE
I
Rotary encoder signal input
99
L METER
I
Level meter voltage detection signal input
100
VREF+
—
Power supply pin for A/D input converter
Pin Description
17
17
CDC-R304/X104EE/X204/X304/X444
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