26
Pin No.
Pin Name
I/O
Pin Description
54
SYS-RST
O
System reset signal output
55
BUS-ON
O
Bus ON control output
56, 57
RE1, 0
I
Rotary encoder input 1, 0
58
AD-ON
O
Power supply output for A/D conversion.
59
RAMBU
I
RAM reset detection input
60
RESET
—
Reset input
61
SIRCS
I
Remote control input (Not used in this set.)
62
BU-IN
I
Backup power detection input
63
NIL
—
Not used (Connect to ground in this set.)
64
ACC-IN
I
Accessory power supply detection input
65
DIMMER
I
Dimmer control input
66
TEL-MUTE
I
Telephone mute control input
67
KEY-ACK
I
Key input acknowledge
68
VDD
—
µ-con power supply
69
X2
O
Main ceramic oscillator output (5 MHz)
70
X1
I
Main ceramic oscillator input (5 MHz)
71
IC
—
Connect to ground in this set.
72
XT2
O
Sub crystal oscillator output (32.768 kHz)
73
XT1
I
Sub crystal oscillator input (32.768 kHz)
74
AVDD
—
Power supply for A/D conversion.
75
AVREF
—
Reference power supply for A/D conversion.
76, 77
KEY-IN0, 1
I
Key input 0, 1
78
KEY-IN2
I
Key input 2 (Not used in this set.)
79
RC-IN0
I
Rotary commander A/D conversion input 0
80
DSTSEL
I
Initial setting input of destination.
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