Functional Description; Rf Functionalities; Figure 1. Functional Architecture - Sierra Wireless WISMO218 Technical Specifications
Wireless standard modem product technical specification & customer design guidelines
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Also See for WISMO218:
- Technical specifications (103 pages) ,
- At command manual (215 pages)
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Functional Description
The global architecture of the WISMO218 is shown below:
Analog Interfaces
32768
kHz
RF Functionalities
The Radio Frequency (RF) range complies with the Phase II EGSM 900/DCS 1800 recommendation.
The frequency range for the transmit band and receive band are listed in the table below.
E-GSM 900
DCS 1800
The RF part of the WISMO218 is based on a specific dual band chip which includes:
a Digital low-IF receiver
WA_DEV_W218_PTS_002
WISMO218
AUDIO
ADCs
Control &
Power
power
supplys
reset
RTC
Address
Figure 1. Functional Architecture
Transmit Band (Tx)
880 to 915 MHz
1710 to 1785 MHz
Rev 005
Product Technical Specification &
Customer Design Guidelines
DSP
GSM / GPRS
core
Digital Interfaces
ARM
core
Memory
Data
Control
925 to 960 MHz
1805 to 1880 MHz
Radio
UART
2
SPI / I
C
GPIOs
SIM
BUZZER
PWMs
Receive Band (Rx)
Page 22 of 109
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