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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 2010 EXAR Corporation
Datasheet October 2010.
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
XRT79L71
PRELIMINARY
1-CHANNEL DS3/E3 CLEAR-CHANNEL FRAMERLIU COMBO - CC/HDLC ARCHITECTURE
REV. P2.0.0
REVISION HISTORY
REVISION #
DATE
DESCRIPTION
P1.0.0
07/18/02
1st release of the XRT99L00 mkll.0
preliminary data sheet.
P1.0.1
02/12/03
Added package outline and pin-out diagram.
P1.0.2
05/03
Added Pin Descriptions
P1.0.3
06/03
Added Electrical Specifications and Register Information.
P1.0.4
07/03
Default Value added to Address Locations 104 and 105 in register map. Add pin
TxSer (C9) to pin list. I/O Control Register (Direct Address = 0x1101, edit Bit 4
AMI/Zero Sup*.
P1.0.5
11/03
Made edits to ATM and CC sections and created PPP sections.
P1.0.6
4/04
Made edits to ATM and CC sections and created PPP sections.
P1.0.7
8/04
Made minor edits to CC section
P1.0.8
11/05
Made edits to CC section.
P2.0.0
10/10
Release of preliminary datasheet for DS3/E3 Clear-Channel Framer/LIU Combo
device.