HUAWEI CM Series Wireless Module Reference Design Manual is an official document released by Huawei. It details the logical structure, external interfaces and main functions of CM Series Wireless Modules. It can guide users to design various terminal wireless products on the basis of the module.
This manual describes the Huawei CM300 series AT module, a CDMA2000 1X wireless terminal used in fixed, mobile, vehicle and public telephone applications. It covers the module's logical structure, hardware interfaces, and key functions to help designers integrate the module into various wireless products.
The document includes detailed sections on product specifications, hardware block diagrams, pin assignments, electrical and mechanical characteristics, as well as application notes for AT command usage, voice interfaces, and RF connections. This manual is written in Chinese.
| Air Interface | CDMA2000 1X |
|---|---|
| Wireless Transmission Speed (forward) | 153.6 Kbps |
| Wireless Transmission Speed (reverse) | 153.6 Kbps |
| Voice Codec | 8K EVRC |
| RF Technology | Zero-IF |
| Working Voltage | +3.3V ~ +4.5V |
| Idle Current | 50 mA |
| Sleep Current | <4 mA |
| Busy Mode Current | <600 mA |
| Operating Temperature | -30°C ~ +75°C |
| Dimensions | 48 mm × 35 mm × 3 mm |
The module operates from +3.3 V to +4.5 V.
The module measures 48 mm × 35 mm × 3 mm.
It supports a forward and reverse data rate of 153.6 Kbps.
The idle current consumption is 50 mA.