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MiniCore RCM5700/RCM6700 User’s Manual

4.2 Serial Communication

The RCM5700/RCM6700 board does not have any serial level converters directly on the board.

However, an Ethernet or other serial interface may be incorporated on the board the MiniCore is

mounted on. For example, the Serial Communication accessory board in the Deluxe Development

Kit has an RS-232 transceiver, and the Interface Board has Ethernet and USB connections.

4.2.1 Serial Ports

There are six serial ports designated as Serial Ports A, B, C, D, E, and F. All six serial ports can

operate in an asynchronous mode up to the baud rate of the system clock divided by 8. An asyn-

chronous port can handle 7 or 8 data bits. A 9th bit address scheme, where an additional bit is sent

to mark the first byte of a message, is also supported.

Serial Port A is normally used as a programming port, but may be used either as an asynchronous

or as a clocked serial port once application development has been completed and the MiniCore is

operating in the Run Mode.

Serial Ports B, C, and D can also be operated in the clocked serial mode. In this mode, a clock line

synchronously clocks the data in or out. Either of the two communicating devices can supply the

clock.

Note that Alternate Serial Port B, which uses PD4 and PD5, is used together with the clock on

PB0 for the serial flash on the RCM5750/RCM5760 and RCM6700 family. If you wish to use the

regular Serial Port B I/O pins (PC4 and PC5) as serial I/O pins with the RCM5750/RCM5760 or

RCM6700 family, your application must manage its sharing of Serial Port B so as to avoid any

conflicts with using the onboard serial flash.

Serial Ports E and F can also be configured as SDLC/HDLC serial ports. The IrDA protocol is

also supported in SDLC format by these two ports. Serial Ports E and F must be configured before

they can be used. The following macros show one way to do this.

#define SERE_TXPORT PEDR

#define SERE_RXPORT PEDR

#define SERF_TXPORT PFDR

#define SERF_RXPORT PFDR

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相关代理商/技术参数	参数描述
20-101-1236	功能描述:界面开发工具 INTERFACE BOARD RCM56/57XX RoHS:否制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V
20-101-1246	功能描述:模块化系统 - SOM RCM5400W RABBITCORE MODULE RoHS:否制造商:Digi International 外观尺寸:ConnectCore 9P 处理器类型:ARM926EJ-S 频率:150 MHz 存储容量:8 MB, 16 MB 存储类型:NOR Flash, SDRAM 接口类型:I2C, SPI, UART 工作电源电压:3.3 V 最大工作温度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
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20-101-1252	功能描述:开发板和工具包 - 其他处理器 RCM56/57 Prototyping Board RoHS:否制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
20-101-1253	功能描述:开发板和工具包 - 其他处理器 RCM56/57XX Serial Comm Board RoHS:否制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:

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