26
5-1. IC PIN DESCRIPTION
• IC401 LC662716A-4L38 (SYSTEM CONTROL) (HAND KEY BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
BEEP-ATT
O
Beep volume High/Low control output (L: High)
2
TX-DATA
O
RF transmission data output
3
RINGER
O
Beep output
4
VSS
—
Ground
5
OSC1
—
Crystal oscillation input (4.048 MHz)
6
OSC2
—
Crystal oscillation output (4.048 MHz)
7
VDD
—
Power supply pin
8
RESET
—
Reset input
9
BAT-IN
I
Battery detection input
10
PE1
—
Not used. (Fixed at L in this set.)
11
TEST
—
Not used. (Fixed at L in this set.)
12
HOLD
I
Input for intermittent. (CR external)
13 – 16
ACT4
O
Output for intermittent reception control. (L: at operation)
17
CHARGE-IN
I
Charge detection input (H: in charge)
18
BAT-LOW-IN
I
Battery low-voltage detection input
19
—
—
Not used. (Fixed at H in this set.)
20
RX-DATA-IN
I
RF reception data input
21
CTRL-STB
O
PLL control standby output
22
CTRL-DATA
O
PLL control data output
23
CTRL-CLK
O
PLL control clock output
24
SIG-STATE
I
RSSI/LOCK signal input (L: RSSI, H: LOCK)
25
TX+B-CTRL
O
TX power control output
26
HICUT-MUTE
O
High band noise mute output
27
RSSI-H/L
O
RSSI sens select output (L: Low sens)
28
VOL-CTRL
O
VOLUME HIGH/NORM select output
29 – 32
P80 – 83
O
Not used. (Fixed at H in this set.)
33
MODEL0
I
Destination model select input 0 (Fixed at L in this set.)
34
MODEL1
I
Destination model select input 1 (Fixed at L in this set.)
35
TEST-CLK
I/O
At initial ID writing, clock input/output.
36
TEST-I/O
I/O
At TEST start-up or ID writing, data input/output. (L: TEST start-up)
37, 38
PA0, 1
—
Not used. (Fixed at L in this set.)
39
LIGHTS
O
Key & LCD back light LED control output
40
TALK-LED
O
TALK LED control output
41 – 45
KEY-OUT0 – 4
O
Key matrix output
46
JOG-EN1
I
JOG input
47
JOG-PUSH
I
JOG input
48
JOG-EN2
I
JOG input
49 – 52
KEY-RETURN0 – 3
I
Key matrix input
53
LCD+B-CTRL
O
LCD power control output (L: at operation)
54
LCD-E
O
LCD-R/W trigger output
55
LCD-R/W
O
LCD-R/W control output
56
LCD-RS
O
LCD register select signal output
57 – 60
LCD-DB4 – 7
O
LCD-DATA output
61
EEPROM-WP
O
EEPROM write protect output
62
EEPROM-SDA
I/O
EEPROM data input/output
63
EEPROM-SCL
O
EEPROM clock output
64
MIC ON/OFF
O
MIC ON/OFF control output (L: OFF)
SECTION 5
DIAGRAMS
