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HUAWEI MC509 CDMA LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 01 (2011-04-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
31
Figure 3-6 Connections of the WAKEUP_IN and WAKEUP_OUT pins
3.5 UART Interface
3.5.1 Overview
The MC509 module provides the RS-232 UART (9-wire UART) interface for one
asynchronous communication channel. As the UART interface supports signal control
through standard modem handshake, AT commands are entered and serial
communication is performed through the UART interface. The UART has the
following features:
Full-duplex
7-bit or 8-bit data
1-bit or 2-bit stop bit
Odd parity check, even parity check, or non-check
Baud rate clock generated by the system clock
Direct memory access (DMA) transmission
Baud rate ranging from 600 bit/s to 230400 bit/s (115200 bit/s by default)
Self-adapted baud rate ranging from 1200 bit/s to 115200 bit/s
Table 3-8 lists the UART interface signals.