XR17C154_05 Datasheet, PDF (60/62 Pages) Exar Corporation – 5V PCI BUS QUAD UART

XR17C154
5V PCI BUS QUAD UART
REVISION HISTORY
xr
REV. 1.3.2
DATE
February 2001
February 2001
April 2001
Sept 2001
May 2003
September 2003
June 2004
November 2004
August 2005
REVISION
A1.0.1 Initial Advanced datasheet
DESCRIPTION
A1.0.2 Corrections for the 154 part name and reference to 4 UARTs
P1.0.0 Preliminary Release
1.0.0
1.1.0
Further clarified pins functions and text, revised DC characteristics table and added
3.3V DC operating parameters.
Changed to single column format. Added uarttechsupport e-mail address to last page.
1.2.0
1.3.0
1.3.1
1.3.2
Added Device Status to Ordering Information. Clarified RS485 description. Added
description for PCI Burst Read and PCI Burst Write. Added wake-up indicator to inter-
rupt source table.
Clarified pin descriptions- changed from using logic 1 and logic 0 to HIGH (VCC) and
LOW (GND) for input and output pin descriptions. The XR17C154 is a 5V Only PCI
Quad UART (removed 3.3V electrical characteristics). For a 3.3V PCI Quad UART, see
the XR17D154. The Device Revision Register (DREV) has been updated to 0x02 for
devices with top mark date code "B2 YYWW".
The Device Revision Register (DREV) has been updated to 0x04 for devices with top
mark date code "D2 YYWW".
Updated the 1.4mm-thick Quad Flat Pack package description from "TQFP" to "LQFP"
to be consistent with JEDEC and Industry norms.
NOTICE
EXAR Corporation reserves the right to make changes to the products contained in this publication in order to
improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any
circuits described herein, conveys no license under any patent or other right, and makes no representation that
the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration
purposes and may vary depending upon a user’s specific application. While the information in this publication
has been carefully checked; no responsibility, however, is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the
failure or malfunction of the product can reasonably be expected to cause failure of the life support system or
to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless
EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has
been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately
protected under the circumstances.
Copyright 2005 EXAR Corporation
Datasheet August 2005.
Send your UART technical inquiry with technical details to hotline: [e-mail].
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
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