Chapter 6 Communications Modules | SMART I/O User’s Manual |
6. Communications Modules
6.1SM-RS232
6.1.1Introduction
The SM-RS232 provides serial communication observing a true RS232 interface definition. Interface parameters such as baud rate, stop bits, data bits and parity are defined by software. The hardware itself supports baud- rates up to 120 kbaud but the delivered software only allows rates up to 19200 baud. Communication tasks are handled directly by the SCC3 port of the 68302 chip on the SMART-BASE hence this module can only be used in the first slot of the SMART-BASE as this is the only slot where the CPU port lines can be used serially. Two LEDs showing data transmission provide the user interface.
6.1.2 Specifications
Input
Output
EEPROM
Front Panel
Power Consumption
Module Weight
ID Byte
Transceiver RxD and CTS | † |
Up to 19200 Baud | † |
Transceiver TxD and DTR |
Up to 19200 Baud | | |
256 Byte Serial EEPROM | | 6 |
Green RxD LED | |
Yellow TxD LED | |
23mW (min.), 75mW (max.) | |
30g | | |
| |
$80 Read by the SPI Interface
†CTS/DTR lines are NOT supported by PEP standard software. XON/ XOFF software protocol is used instead.
| | | |
March 12, 1996 | ©1996 PEP Modular Computers GmbH | Page 6 - 5 |
| |
