Wavecom WMOi3 User Manual

January 2001/ version 1.4
WMOi3 Integrated Modem
confidential ©
26/61
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11 S_RTS
7 S_RX
15
GND
26
5 S_RI
6 S_DCD
10 S_CTS
12 S_DSR
8 S_DTR
9 S_TX
14 VCC
VCC
VCC
GND
3
DTR 21
RTS 18
VCC 13
16
1
28
25
CTS 19
DSR 17
RI 24
DCD 23
VCC
RX 22
TX 20
27
2
4
C1+
C1-
C2+
C2-
T1IN
T2IN
T3IN
T4IN
T5IN
R1OUTB
R2OUT
R3OUT
R4OUT
ON
T1OUT
R1IN
T2OUT
T3OUT
T4OUT
T5OUT
R2IN
R3IN
ERROR
OFF
Modem
Level Shifter
Terminal
MAX 3238
figure 5* : level shifter application diagram for serial link
* This application note is valid for VCC * This application note is valid for VCC ≥≥ 3.0Volt (see MAX3238 specifications). Auto shut down 3.0Volt (see MAX3238 specifications). Auto shut down
mode is not used in this example.mode is not used in this example.
4.1.4 ON / ~OFF
This input is used to switch ON or OFF the WMOi3 modem. A high level signal
has to be provided on the ON/~OFF pin to switch on the modem. The level of the
voltage of this signal has to be maintained to VCC during a minimum time of 1
second. When powered off, the shutdown current is roughly
60 µA.

Wavecom WMOi3 Specifications

General

Brand	Wavecom
Model	WMOi3
Category	Modem
Language	English