Read Sony CDX-GT28M Service Manual online
CDX-GT28M
27
Pin No.
Pin Name
I/O
Description
69
AREASEL 3
I
Destination setting pin 3
70
AREASEL 2
I
Destination setting pin 2
71
AREASEL 1
I
Destination setting pin 1
72
AREASEL 0
I
Destination setting pin 0
73 to 80
NCO
O
Not used. (Open)
81
RE IN1
I
Rotary encoder signal input 1
82
RE IN0
I
Rotary encoder signal input 0
83
SAIN
I
Spectrum analyzer signal input Not used. (Open)
84
CYRIL SEL
I
Cyril correspondence discrimination signal input
“H”: Correspondence, “L”: No correspondence
“H”: Correspondence, “L”: No correspondence
85
TUATT
O
Tuner mute control signal output Not used. (Open)
86
NCO
O
Not used. (Open)
87
RDS ON
O
RDS IC power supply control signal output Not used. (Open)
88
NCO
O
Not used. (Open)
89
SADATA
O
Spectrum analyzer data signal output Not used. (Open)
90
SACLK
O
Spectrum analyzer clock signal output Not used. (Open)
91
KEYACK0
I
Key Acknowledge detection signal input (Rotary command signal input)
92
KEYACK1
I
Key Acknowledge detection signal input (Front panel 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
AVSS
—
Ground pin for A/D converter
97
RC IN0
I
Rotary commander key signal input
98
AVRH
—
A/D converter external reference power supply pin (+3.3V)
99
AVDD
—
A/D converter power supply pin (+3.3V)
100
LCD CE
O
Liquid crystal display panel chip enable signal output
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