75
HCD-C5
I/O
Pin Name
Pin No.
Description
I
O
O
O
O
O
I/O
—
—
I
I
O
O
O
O
O
I
O
O
O
O
O
O
—
—
—
I
I
I
I
I
I
I
I
I
I
I
I
O
I
I
I
I
I
I
I
—
—
—
—
PROTECT
PRE-MUTE
PWR-MUTE
REC-MUTE
HP-MUTE
SPK-RELAY
HELP
BVDD
BVSS
KBD-CHK
KBD-DATA
VOL-CE
VOL-CLK
VOL-DATA
LED
FAN-ON
HP-IN
IO-RST
PWR-RELAY
MD-PWR
FL-ON
ON/STANDBY
DIMMER
AVDD
AVSS
AVREF
KEY1
KEY2
KEY3
ADJ
DEST1
DEST2
DEST3
DEST4
MODEL1
MODEL2
DEVICE1
DEVICE2
KBD-CLKO
KBD-CLKI
AC-CUT
PCPON
KEY-RM
SIRCS
SCOR
RDS-CLK
IO-DI
IO-DO
IO-CLK
IO-CE
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Not used (pull-up)
Pre-amplifier muting signal output
Not used (open)
REC output muting signal output
Not used (open)
Speaker relay control signal output
IIC busy signal input or output
Power supply for bus interface
Ground for bus interface
PC LINK inserted detect signal input
Key board data input (pull-up)
Volume latch signal output to the sound processor
Volume clock signal output to the sound processor
Volume data signal output to the sound processor
LED control signal output
Not used (open)
Headphone detect signal input (pull-down)
Not used (open)
Power relay control signal output
MD power control signal output
Not used (open)
STANDBY LED control signal output
Not used (open)
Analog power supply
Analog ground
Analog reference voltage
Key input signal from function switch
Key input signal from function switch
Key input signal from function switch
Adjust mode input (pull-up)
Destination setting input
Destination setting input
Destination setting input
Destination setting input
Model setting input
Model setting input
Device setting input
Device setting input
Keyboard clock output (pull-up)
Keyboard clock input (pull-up)
AC off detect signal input
PC power detect signal input for PC LINK
Remote control receiver or power key detect signal input
Remote control receiver data signal input
CD Q-data request signal input
RDS clock signal input
Not used (open)
Not used (open)
Not used (open)
Not used (open)
