47
HCD-GPX5
Pin No. Pin Name I/O Description
84 PROTECT I Protect signal input from the amplifier circuit “L”: protect
85 SP RELAY O Speaker on/off relay drive signal output terminal “L”: speaker off
86 AMP POWER O AMP muting on/off control signal output terminal “H”: AMP on
87 EQ DATA O Serial data output to the electrical volume
88 EQ CLK O Serial data transfer clock signal output to the electrical volume
89 to 91 KEY3 to KEY1 I Front panel key or headphone detection input terminal (A/D input)
92 MODEL I Setting terminal for the model type
93 DEST I Setting terminal for the destination
94 TC END SW I End switch detection from tape deck block
95
TC HALF/
REC SW
I Half/REC switch detection from tape deck block
96 AVSS — Ground terminal
97 NC O Not used
98 VREF I Reference voltage (+3.3V) input terminal
99 AVCC — Power supply terminal (+3.3V)
100 FL DATA O Serial data output to the FL/LED driver
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