Product category:
Communications ICs (Wired)
News Release from: Oxford Semiconductor | Subject: OXmPCI952
Edited by the Electronicstalk Editorial
Team on 27 October 2003
Fast throughput from dual-UART
PCI-bridge chip
The OXmPCI952 integrates two high-performance UARTs and provides a sustained data throughput of 60Mbit/s in isochronous mode and 15Mbit/s in asynchronous mode.
Integrating two high-performance UARTs, a 3.3V PCI/mini PCI interface and a parallel port/local bus in a 160 LQFP, the OXmPCI952 provides a sustained data throughput of 60Mbit/s in isochronous mode and 15Mbit/s in asynchronous mode 128byte transmit and receive FIFOs on each UART channel enable the OXmPCI952 to reduce CPU interrupts and boost the speed of PCI and mini PCI serial and parallel addon cards
This article was originally published on Electronicstalk on 22 Jul 2008 at 8.00am (UK)
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To help simplify driver and hardware design, the UARTs are compatible with industry standard 16C550 devices.
The chip's PCI interface is also fully compliant with PCIbus version 3.0 and PCI power management version 1.1 specifications.
A versatile device, the OXmPCI952 offers two distinct modes of operation.
Function 0 offers the fast dual UART capability, whereas function 1 provides either an 8bit local bus or a bidirectional IEEE1284 parallel port supporting SPP, PS2, EPP and ECP protocols.
Serial card applications requiring more than two UART channels are also possible using the IC's 8bit pass-through local bus option, which enables the chips to be cascaded to create up to 18 serial ports.
To improve device driver efficiency and reduce interrupt latency, each UART has multiport features including shadowed FIFO levels, a global interrupt source register and a good-data status indicator.
Programmable threshold and fill level registers ensure comprehensive software control.
The OXmPCI952 is supported by software drivers for Windows NT, XP and Mac OSX, with Linux drivers available from third party sources.
A PCI card design note, PCB schematics and application notes are also available.
Oxford Semiconductor's dual UART PCI interface chip is $7.22 in 1000-piece quantities.
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