User's Manual

Universal Scientific Industrial Corp.
Doc No. Rev
1.4
Date.
2011/12/09
Page
4
Description
Product Specification – WM-G-MR-09-Ref2
2 PURPOSE
The purpose of this document is to define the product specification for 802.11b/g
WiFi module WM-G-MR-09-Ref2.
3 SCOPE
 High speed for wireless LAN connection: IEEE802.11b/g up to 54Mbps data
rate by incorporating Direct Sequence Spread Spectrum (DSSS) and OFDM
data modulation.
 Provide seamless roaming within the IEEE 802.11b/g WLAN infrastructure.
 IEEE 802.11b/g compatible: allow inter-operation among multiple vendors.
 Auto fallback: 54M, 48M, 36M, 24M, 18M, 12M, 9M, 6M (802.11g); 11M, 5.5M,
2M, 1M (802.11b) data rate with auto fallback.
 WPA (Wi-Fi Protected Access)
 Support 802.11i Security standard through implementation of AES / CCMP
and WEP with TKIP security mechanism.
 Support 802.11e Quality of Service (QoS)
 Interoperability – Complying with WECA WiFi.
 3-wire, hardware signaling BT WiFi co-existence supported
 Compliant with RoHS
3.1 BLOCK DIAGRAM
The figure is WM-G-MR-09-Ref2 simple block diagram which provide WIFI B/G function. This module
consists of Marvell 8686 chip and use simple antenna design concept. To avoid CDMA, GSM, PCS
and WCDMA interfering signal, the blocking filter implemented in this module. Otherwise there is
embedded 38.4MHz crystal in this module for WiFi chip.
Fig. WM-G-MR-09-Ref2 Block Diagram