Specifications

Introduction l l Chapter 1

1.1 Features

The C114HI 4 port RS-232/422/485 board provides the following advanced

features:

u 16 bit AT bus architecture, more IRQs supported

u ASIC-designed, easily configured by software ( IO-IRQ/DOS )

u Independent I/O address and IRQ settings for each of 4 serial ports

u 4 high speed, up to 921.6K bps, TI550C UARTs with on-chip hardware flow

control, no data loss ( 16550 compatible )

u Compatible with PC standard ports: COM1 ~ COM4

u Supports isolation protection for RS-422/RS-485

u Supports 2-wire or 4-wire RS-485 operation modes

u Supports RS-485 auto data direction switching feature

u Supports Windows NT/95, DOS and Windows 3.x device drivers

u Compatible with most popular Operating Systems

1.2 Specifications

u Bus interface : ISA(EISA compatible)

u Number of ports : 4

u I/O address : 0x0000 ~ 0xFFFF

u IRQ : 2, 3, 4, 5, 7, 10, 11, 12, 15

u Data bits : 5, 6, 7, 8

u Stop bits : 1, 1.5, 2

u Parity : none, even, odd, space, mark

u UART : 4¡ÑTI550C

u Speed : 50 ~ 921.6K bps

u Connectors : 4¡ÑDB-9 male (DTE)

u Data signals : RS-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND

RS-422: TxD+/-, RxD+/-, RTS+/-, CTS+/-, DCD, GND

RS-485: TxD+/-, RxD+/-, GND

u Isolation protection : max. 2000V for RS-422 or RS-485

u Operating temp. : 0 ~ 55° C

u Dimensions : 22 cm¡Ñ11.5 cm

u C114HI is compatible with various operating systems. However, Moxa supports

proprietary drivers for better performance. See the driver list below.