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Chapter 1: Introduction
The PCI Express Multiport Serial cards were designed for RS232 asynchronous
communications for use in a variety of applications. These boards were designed to offer
compatibility with the PCI Express bus and to be used by system integrators and
manufacturers in the design of industrial and commercial communication systems. The card is
available in 8-port and 4-port versions and is compatible with all popular operating systems.
Each RS232 port is capable of supporting data rates up to 921.6kbps (460.8kbps version is
standard) and implements full modem control signals to ensure compatibility with a wide range
of serial peripherals. Existing serial peripherals can connect directly to the industry standard
DB9M connectors which are provided via an available cable. The board features a x1 lane
PCI Express connector which can be used in any x1, x2, x4, x8, x12 or x16 PCI Express slot.
.
Features
•
Eight- or four-port PCI Express RS-232 serial communications
•
Low profile MD1 form factor, MD1 defines the shortest standard card length available
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High performance 16C950 class UARTs with 128-byte FIFO for each TX and RX
•
Supports data communication speeds up to 921.6kbps (standard model 460.8kbps)
•
+/-15kV ESD protection on all signal pins
•
Full modem control signals
•
Software compatible with all operating systems
•
Plug and Play, no jumpers to configure
•
3' breakout cable terminating with industry-standard DB9M connectors
Applications
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POS (Point-of-sale) Systems
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Gaming Machines
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Transportation Stations
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Telecommunications
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Industrial Automation
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ATM (Automated Teller Machine) Systems
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Multiple terminal control
•
Office Automation
•
Kiosks
Functional Description
These cards feature high performance 16C950 class UARTs which support the complete
register set of the standard 16C550-type devices. The UARTs support operations in 16C450,
16C550 and 16C950 modes. Each port is capable of data communication speeds up to
921.6kbps (standard model up to 460.8kbps) in asynchronous mode and has 128-byte deep
transmit and receive FIFOs to protect against lost data in multitasking operating systems, to
help reduce CPU utilization and to improve data throughput.
PCIe-COM232-8 User Manual
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