- 您现在的位置：买卖IC网 > Sheet目录1062 > 101-0954 (Rabbit Semiconductor)KIT DEV RABBIT RCM3360/3370 INTL
B.4.6.1 RS-232
RS-232 serial communication on the Prototyping Board is supported by an RS-232 trans-
ceiver installed at U9. This transceiver provides the voltage output, slew rate, and input
voltage immunity required to meet the RS-232 serial communication protocol. Basically,
the chip translates the Rabbit 3000’s signals to RS-232 signal levels. Note that the polarity
is reversed in an RS-232 circuit so that a +5 V output becomes approximately -10 V and 0
V is output as +10 V. The RS-232 transceiver also provides the proper line loading for
reliable communication.
RS-232 can be used effectively at the RCM3360/RCM3370 module’s maximum baud rate
for distances of up to 15 m.
RS-232 flow control on an RS-232 port is initiated in software using the
serXflowcontrolOn function call from RS232.LIB , where X is the serial port (E or F).
The locations of the flow control lines are specified using a set of five macros.
SERX_RTS_PORT —Data register for the parallel port that the RTS line is on (e.g., PGDR).
SERX_RTS_SHADOW —Shadow register for the RTS line's parallel port (e.g., PGDRShadow).
SERX_RTS_BIT —The bit number for the RTS line.
SERX_CTS_PORT —Data register for the parallel port that the CTS line is on (e.g., PCDRShadow).
SERX_CTS_BIT —The bit number for the CTS line.
Standard 3-wire RS-232 communication using Serial Ports E and F is illustrated in the fol-
lowing sample code.
#define EINBUFSIZE 15
#define EOUTBUFSIZE 15
#define FINBUFSIZE 15
#define FOUTBUFSIZE 15
#ifndef _232BAUD
#define _232BAUD 115200
#endif
main(){
serEopen(_232BAUD);
serFopen(_232BAUD);
serEwrFlush();
serErdFlush();
serFwrFlush();
serFrdFlush();
}
User ’s Manual
87
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
101-1050-BE-00025
ADPT USB 2 A FEMALE-2 5PIN .25M
10112627-101LF
MINI-SAS HD 1X2 EXT PCB
10112628-101LF
MINI-SAS HD 1X4 EXT PCB
10136-3000PC
CONN MINI-D 36POS SOLDER PLUG
10136-6000EC
CONN MDR PLUG 36POS IDC GOLD
10150-4CZ3PL
CONN MDR PLUG 50POS VERT T/H
10150-72E2PC
CONN MINI-D 50POS R/A PLUG
10150-8000EE
CONN PLUG 50 POS MINI-D
相关代理商/技术参数
101-0955
功能描述:模块化系统 - SOM RCM2260 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
101-0956
功能描述:开发板和工具包 - 其他处理器 Powercore Flex Kit US Version
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:
101-0957
功能描述:开发板和工具包 - 其他处理器 Powercore Flex Kit International Vers.
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:
101-0961
功能描述:模块化系统 - SOM RCM3720 CORE MOD.
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
10-109611-3S
制造商:Amphenol Corporation 功能描述:10-109611-03S - Bulk
10-109611-4S
制造商:Amphenol Corporation 功能描述:10-109611-04S - Bulk
10-109614-02S
制造商:Amphenol Corporation 功能描述:ER 4C 4#16S SKT PLUG
10-109614-05P
制造商:Amphenol Industrial Operations 功能描述:ER 5C 5#16S PIN PLUG