Technical Description | Black Box RS-485, RS-422, IC183C specification

RS-422/485 SERIAL INTERFACE PLUS, 4-PORT

To install the Card using factory-default settings, refer to Chapter 4, Installation.

For your reference, record installed Card settings below:

Table 2-2. Your Installed Card Settings.

Port #

Base Address

IRQ

Electrical Specifications

Port 1

Port 2

Port 3

Port 4

2.4 Technical Description

The IC058C Card uses the 16750 UART. This chip features programmable baud rate, data format, and interrupt control, and a 16-byte input and output FIFO. The IC183C card uses the 16950 UART, which features a 128-byte FIFO for even better performance.

2.4.1FEATURES

•Automatic RS-485 driver enable/disable allows card to appear to be RS-232, requiring no additional drivers

•“PAL” option allows for unique OEM address selection

•“Shareable” IRQs allow more than one port to share a single IRQ

•IRQs 2/9-7, 10, 11, 12, 15 supported

•16750 buffered UARTs (IC058C) or 16950 UARTs (IC183C)

•16 Bit address decode allows for easier integration

•Speeds up to 460.8 kbps available

•Multiple clocking modes ensure compatibility with existing software products