User Manual

Alpha Networks Proprietary and Confidential Information
14
2.0 Requirements
The following sections identify the detailed requirements of the Wifi module.
2.1 Functional Block Diagram
Connector
RT5370
3.3V 3.3V
1.5V 1.5V
D+
D-
GND
RST
GND
D+
D-
RST
TX
RX
40 MHz Crystal
GNDGND
2.2 General Requirements
2.2.1 IEEE 802.11b Section
# Feature Detailed Description
2.2.1.1 Standard
y
IEEE 802.11b
2.2.1.2 Radio and
Modulation
Schemes
y
DQPSK, DBPSK, DSSS, and CCK
2.2.1.3 Operating
Frequency
y
2400 ~ 2483.5MHz ISM band
2.2.1.4 Channel Numbers
y
11 channels for United States/ Canada
13 channels for Europe Countries
13 channels for Japan
2.2.1.5 Data Rate
y
11, 5.5, 2, and 1Mbps
2.2.1.6 Media Access
Protocol
y
CSMA/CA with ACK
2.2.1.7 Transmitter
Output Power
before Antenna
y
Typical RF Output Power (tolerance
：
±2 dBm) and Data Rate
at each RF chain, at room Temp. 25degree C
y
10 dBm
2.2.1.8 Receiver
Sensitivity before
Antenna
y
Typical Sensitivity at Which Frame (1000-byte PDUs) Error Rate
= 10%
y
-89 dBm at 1Mbps
y
-86 dBm at 2Mbps
y
-85 dBm at 5.5Mbps
y
-76 dBm at 11Mbps
2.2.2 IEEE 802.11g Section
# Feature Detailed Description
2.2.2.1 Standard
y
IEEE 802.11g
2.2.2.2 Radio and
Modulation Type
y
BPSK, QPSK, 16QAM, 64QAM with OFDM
2.2.2.3 Operating
Frequency
y
2400 ~ 2483.5MHz ISM band