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Pin No.
Pin Name
73
TU CE
74
TU CLOCK
75
TU DI
76
TU DO
77
TU MUTE
78
TA MO
79
TA RP
80
TA BIAS
81
TA SOL
82
AMP-STBY
83
AMP MUTE
84
AU MUTE
85
POWER ON
86
NC
87
ST-BY LED
88
DSG/I-BASS LED
89
VSS2
90
VDD2
91
CD LED
92
TU LED
93
TA LED
94
MD CD ON LED
95
CD DATA
96
SENS
97
CD-CLK
98
MI-DIO-O
99
MI-DIO-I
100
MI-CK
I/O
O
Chip enable signal output to the FM/AM tuner unit
O
Serial data transfer clock signal output to the FM/AM tuner unit
I
Serial data input from the FM/AM tuner unit
O
Serial data output to the FM/AM tuner unit
O
Tuner muting on/off control signal output to the FM/AM tuner unit
O
Capstan/reel motor on/off control signal output terminal
Recording/playback selection signal output terminal
O
"H": playback mode, "L": recording mode
O
Recording bias on/off selection signal output terminal
O
Trigger plunger on/off control signal output terminal
O
Standby control signal output to the power amplifier
O
Tuner muting on/off control signal output to the power amplifier
O
Line muting on/off control signal output terminal
O
Power relay drive signal output terminal
—
Not used
O
LED drive signal output terminal
O
LED drive signal output terminal
—
Ground terminal
—
Power supply terminal (+3.1V)
—
Not used
—
Not used
—
Not used
O
Power on/off control signal output for the CD mechanism section
O
Serial data output to the CD DSP
I
Internal status (SENSE) signal input from the CD DSP
O
Serial data transfer clock signal output to the CD DSP
O
Serial data output to the MP3 decoder
I
Serial data input from the MP3 decoder
O
Serial data transfer clock signal output to the MP3 decoder
Description
"H": motor on
"H": bias on, "L": bias off
"H": plunger on
"H": on
CX-LEM550
33
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