HCD-ZX66i/ZX99i
69
Pin No.
Pin Name
I/O
Description
61
EEPROM CLK
I/O
EEPROM clock signal input/output
62
VCC
—
Power supply terminal (+3.3 V)
63
NO USE
I
Not Used. (Open)
64
VSS
—
Ground terminal
65
AUDIO1 DATA
O
Serial data output to audio signal processor
66
AUDIO1 CLK
O
Serial data transfer clock signal output to audio signal processor
67
AUDIO2 DATA
O
Serial data output to 4-ch volume IC
68
AUDIO2 CLK
O
Serial data transfer clock signal output to 4-ch volume IC
69
SOFT TEST
O
Soft test signal output
70
NO USE
I
Not Used. (Open)
71
GC RESET
O
Reset signal output to Display Control IC (L: reset)
72
SURR RELAY
O
Relay drive signal output for the surround speakers (H: relay on)
73
DISPLAY KEY
I
Display key press detection signal (Interrupt input)
74
POWER KEY
I
Power key press detection signal (Interrupt input)
75
IPOD DETECT
I
iPod plug in detection (L: connected, H: disconnected)
76
STBY LED
O
LED drive signal output of POWER indicator (H: LED on)
77
HP DET
I
Headphone connection detection signal input (H: headphone connected)
78
FR RELAY
O
Relay drive signal output for the front speakers (H: relay on)
79
HP MUTE
O
Headphone muting on/off control signal (L: muting on)
80
STK MUTE
O
Power ampli
fi
er and sub woofer ampli
fi
er on/off control signal output (H: ampli
fi
er on)
81
PROTECT
I
Speaker protect detection signal input from speaker protect circuit (L: protector on)
82
ST CLK
O
PLL serial data transfer clock signal output to the tuner unit
83
ST DIN
I
PLL serial data input from the tuner unit
84
ST DOUT
O
PLL serial data output to the tuner unit
85
ST CE
O
PLL chip enable signal output to the tuner unit
86
TUNED
I
Tuning detection signal input from the tuner unit (L: tuned)
87 to 91
NO USE
I
Not Used. (Open)
92
MODEL-IN
I
Model setting terminal (L: HCD-ZX66i, H: HCD-ZX99i)
93
DEST-IN
I
Not Used. (Open)
94
I-HOLD
I
Not Used. (Open)
95
NO USE
I
Not Used. (Open)
96
AVSS
—
Ground terminal (for A/D conversion)
97
NO USE
I
Not Used. (Open)
98
VREF
I
A/D Converter reference voltage input terminal (+3.3 V)
99
AVCC
—
Power supply terminal (+3.3 V) (for A/D conversion)
100
MP3-REQ
I
Request signal from MP3 decoder IC
