Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation
BM310012WT04
29
Copyright Wavenet Technology © October 2003
Data Interface Pin Descriptions
Pin Signal
Description Signal Reset
State
1
DCD
Data Carrier Detect
Output
High Impedance
2
RXD
Receive Data
Output
High Impedance
3
TXD
Transmit Data
Input
100k pull up to 3V
4
DTR
Data Terminal ready
Input
100k pull up to 3V
5 GND
Ground
Ground 0V
6
DSR
Data Set Ready
Output
High Impedance
7
RTS
Request to Send
Input
100k pull up to 3V
8
CTS
Clear to Send
Output
High Impedance
9
RI
Ring Indicator
Output
High Impedance
10
HCRESET
Modem Reset
Input
40-80k pull up to 3V
11
RTC_BB
RTC battery backup
Input
High Impedance
12
HOSTPWR_ON
Modem Power on/off
Input
80k pull down to 0V
13
LED0_MSGWTG
Message Waiting
Output
High Impedance
14
LED1_INRANGE
In Range
Output
High Impedance
15
LED2_LOWBAT
Low Battery
Output
High Impedance
16
SS0/RXD2
Status Signal 0
Bi-directional
100k pull up to 3V
17
SS1/TXD2/AD1
Status Signal 1
Bi-directional
100k pull up to 3V
18
SS2/RXD3/AD2
Status Signal 2
Bi-directional
100k pull up to 3V
19
SS3/TXD3/AD3
Status Signal 3
Bi-directional
100k pull up to 3V
20
HOST 3.8V
Supply Voltage
Supply
3.4 – 4.2V
21
HOST 3.8V
Supply Voltage
Supply
3.4 – 4.2V
22
HOST 3.8V
Supply Voltage
Supply
3.4 – 4.2V
23
HOST 3.8V
Supply Voltage
Supply
3.4 – 4.2V
24
TEST-PIN
Do not connect
25 HOST
GND
Ground
Ground
0V
26 HOST
GND
Ground
Ground
0V
27 HOST
GND
Ground
Ground
0V
28 HOST
GND
Ground
Ground
0V
29
TEST-PIN
Do not connect
30
SS4
Status Signal 5
Bi-directional
100k pull up to 3V
Warning: Do not connect the TEST-PIN terminals (pins 24 and 29) or
the modem may malfunction. Leave disconnected.
Warning: The input voltage on RTC-BB (pin 11) must never exceed 3V
under any circumstances or the modem may be damaged.
Note: The voltage range of most of the modem input pins is typically
0-3V, however, 0-5V may be used for compatibility with conventional
digital logic, unless otherwise stated.