OX16PCI952-TQFP-A View Datasheet(PDF) - Unspecified

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Description

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OX16PCI952-TQFP-A

Integrated High Performance Dual UARTs, Parallel Port and 5.0v PCI interface

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FEATURES

OX16PCI952 DATA SHEET

Integrated High Performance Dual UARTs,

Parallel Port and 5.0v PCI interface

DS_B008A_00

• Two 16C950 High performance UART channels

• IEEE1284 Compliant SPP/EPP/ECP parallel port

• Multi- function target PCI controller. Fully compliant to

PCI bus specification 2.2 and PCI Power Management

1.0.

• Function access to pre-configure each UART and the

parallel port, prior to handover to generic device

drivers.

• UARTs fully software compatible with 16C550- type

devices.

• Baud rates up to 15Mbps in asynchronous mode and

60Mbps in external 1x clock mode

• 128-byte deep FIFO per transmitter and receiver

• Flexible clock prescaler from 1 to 31.875

• Automated in-band flow control using programmable

Xon/Xoff in both directions

DESCRIPTION

• Automated out-of-band flow control using CTS#/RTS#

and/or DSR#/DTR#

• Arbitrary trigger levels for receiver and transmitter

FIFO interrupts and automatic in-band and out-of-

band flow control

• Infra-red (IrDA) receiver and transmitter operation

• 5, 6, 7, 8 and 9-bits data framing

• Global Interrupt Status and readable FIFO levels to

facilitate implementation of efficient device drivers

• Detection of bad data in the receiver FIFO

• 2 multi-purpose IO pins which can be configured as

interrupt inputs or ‘wake-up’ pins (via local registers).

• Auto-detection of a range of optional MicrowireTM

compatible EEPROMs, to reconfigure device.

• Operation via IO or memory mapping.

• 5.0V operation

• 128 pin TQFP package

The OX16PCI952 is a single chip solution for PCI-based

serial and parallel expansion add-in cards. It is a dual

function device, offering IO or memory mapped access to

the two ultra-high performance OX16C950 UARTs and the

bi-directional parallel port. These functions are defined by

Function 0 and Function 1, respectively. Serial port cards

with 2 serial ports and a parallel port can be designed

without redefining any device parameters.

Each UART channel in the OX16PCI952, is the fastest

available PC-compatible UART, offering data rates up to

15Mbps and 128-byte deep transmitter and receiver FIFOs.

The deep FIFOs reduce CPU overhead and allow

utilisation of higher data rates. Each UART channel is

software compatible with the widely used industry-standard

16C550 devices and compatibles, as well as the

OX16C95x family of high performance UARTs. In addition

to increased performance and FIFO size, the UARTs also

provide the full set of OX16C95x enhanced features

including automated in-band flow control, readable FIFO

levels, etc.

The parallel port is an IEEE 1284 compliant SPP, EPP and

ECP parallel port that fully supports the existing Centronics

interface. For legacy applications, the PCI resources have

been arranged so that the parallel port can be located at

standard I/O addresses

Oxford Semiconductor Ltd.

25 Milton Park, Abingdon, Oxon, OX14 4SH, UK

Tel: +44 (0)1235 824900 Fax: +44(0)1235 821141

A set of local registers is available to enhance device driver

efficiency and reduce interrupt latency. Each internal UART

has features such as shadowed FIFO fill levels, an interrupt

source register and Good-Data Status, readable in

consecutive DWORD registers and is visible to logical

function0 in both IO space and memory space. The local

registers also provide additional controls for each UART

and the parallel port, to customise the device for the end-

users application.

The efficient 32-bit, 33MHz target-only interface is

compliant with the PCI bus specification version 2.2 and

version 1.0 of PCI Power Management Specification.

For full flexibility, all the default configuration register

values can be overwritten using an optional MicrowireTM

compatible serial EEPROM.

This EEPROM can also be used to provide function access

to pre-configure each UART into enhanced modes or pre-

configure the parallel port, prior to any PCI configuration

accesses and before control is handed to generic device

drivers.

MicrowireTM is a trade mark of National Semiconductor.

© Oxford Semiconductor 2001

OX16PCI952 Datasheet rev 1.1 – June 2001

Part No. OX16PCI952-TQFP- A

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