Cep Terminals GSM/GPRS TERMINAL CT63 JAVA 6203 用户手册

4.2 Interfaces

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wm_java_usersguide_v19

Page 21 of 109

2012-01-27

Confidential / Released

ASC0, an Asynchronous Serial Controller, is a 9-wire serial interface. It is described in 

. With-

out a running Java application the module can be controlled by sending AT commands over 
ASC0. Furthermore, ASC0 is designed for transferring files from the development PC to the 
module. When a Java application is started, ASC0 can be used as an RS-232 port or/and Sys-
tem.out. Refer to 

 for details. 

There are ten I/O pins that can be configured for general purpose I/O. One pin can be config-
ured as a pulse counter. All lines can be accessed under Java by AT commands or a Java API. 
See 

 for information about usage and startup behavior.

There are two analogue input lines and one analogue output line. They are accessed by  AT 
commands or via a Java API. See 

 and 

 for details.

ASC1 is the second serial interface on the module. This is a 4-pin interface (RX, TX, RTS, 
CTS). It can be used as a second AT interface when a Java application is not running or by a 
running Java application as RS-232 port or/and System.out.

The ME has a seven-line serial interface with one input data clock line and input/output data 
and frame lines to support the DAI. Refer to 

 and 

 for more information. 

There is a 4 line serial interface which can be used as I2C or SPI interface. It is described in 

. The AT^SSPI AT command configures and drives this interface.  For details see 

. I2C 

and SPI are also accessible from a Java API.