37
CDX-GT42IPW/GT44IP/GT420IP
54
BUIN
I
Back-up power supply detect signal input
55
FUNC SEL
O
AUX/i-Pod audio select control signal output “H”: AUX audio, “L”: i-Pod audio
56
DAVN
I
RDS data block synchronized detect signal input
57
BUSON_A
O
BUS on signal output for i-Pod
58
UNISI
I
S-BUS data signal input
59
UNISO
O
S-BUS data signal output
60
UNISCK
O
S-BUS clock signal output
61
Z-MUTE
I
CD zero cross mute detect signal input
62
NOSE_SW
I
Front panel attachment detect signal input “L”: Panel on, “H”: Panel off
63
FLASH_W
I
Memory mode select signal input Not used in this set. (Pull up)
Normally “H” input: Single chip mode, after reset “L”: Flash write mode
64
SIRCS
I
Remote control signal input
65 to 70
NCO
O
Not used. (Open)
71
RC_IN1
I
Rotary commander shift key signal input Not used in this set. (Pull up)
72 to 76
NCO
O
Not used. (Open)
77
RESET
I
System reset signal input
78
NCO
O
Not used. (Open)
79
XIN
I
Low speed operation clock signal input (32.768 kHz)
80
XOUT
O
Low speed operation clock signal output (32.768 kHz)
81
VSS1
—
Ground pin
82
OSCIN
I
High speed operation clock signal input (18.432 MHz)
83
OSCOUT
O
High speed operation clock signal output (18.432 MHz)
84
VCC3
—
Power supply pin (+3.3 V)
85
CYRIL_SEL
I
Cyril correspondence discrimination signal input “L”: No correspondence
86
DEMOSEL
I
DEMO select signal input “H”: DEMO on, “L”: DEMO off
87
NCO
O
Not used. (Open)
88
SYSRST
O
System reset signal output
89, 90
NCO
O
Not used. (Open)
91
CD_ON
I
CD mechanism servo power supply control request signal input
92
CDM_ON
I
CD mechanism deck power supply control request signal input
93 to 95
NCO
O
Not used. (Open)
96
BUSON
O
BUS ON signal output
97
TESTIN
I
Test mode detect signal input Not used in this set. (Pull up)
98
TELATT
I
Telephone attenuate detect signal input
99
ACC_IN
I
Accessory power supply detect signal input
100
ATT
O
Audio mute control signal output
Pin No.
Pin Name
I/O
Pin Description