XR21B1424_17 Datasheet, PDF (64/64 Pages) Exar Corporation – Enhanced 4-Ch Full-Speed USB UART

XR21B1424
Ordering Information⁽¹⁾
Part Number
XR21B1424IV64-F
XR21B1424IV64TR-F
XR21B1424IV64-0A-EVB
Operating Temperature Range
-40°C to +85°C
Evaluation Board for XR21B1424
NOTE:
1. Refer to www.exar.com/XR21B1424 for most up-to-date Ordering Information
2. Visit www.exar.com for additional information on Environmental Rating.
Revision History
Lead-Free
Yes⁽²⁾
Package
64-pin LQFP
Packaging Method
Tray
Reel
Revision
1A
1B
1C
Date
April 2014
November 2014
August 2017
Description
Initial release [ECN1416‐06 l 04/15/2014]
Corrected Request value for 4 CDC-ACM USB control commands. Corrected marking specification in Order-
ing Information table [ECN 1446‐10 Nov 12 2014]
Updated to MaxLInear logo. Updated format and ordering information table. Added Character Format section.
Updated USB_STAT, VCC_REG, VBUS_SENSE and RI#/RWK# pin descriptions. Updated OTP Memory intro
paragraph and Remote Wake-up section. Changed LOCK_BYTE to PROG_BYTE in OTP Map and Descrip-
tions. Clarified minimum baud rate of 300 bps in General Description and Features. Updated Read/Write of
USB_STATUS register and updated bits 0 and 1. Updated USB Strings section. Corrected GET_USB_STAT
typo in USB Control Commands. Corrected typos in registers 0x00B, 0x00C and 0x00E.
Corporate Headquarters:
5966 La Place Court
Suite 100
Carlsbad, CA 92008
Tel.:[phone]
Fax: [phone]
www.maxlinear.com
High Performance Analog:
48760 Kato Road
Fremont, CA 94538
Tel.: [phone]
Fax: [phone]
Email: [e-mail]
www.exar.com
The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by
MaxLinear, Inc.. MaxLinear, Inc. assumes no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained
in this guide. Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no part of this docu-
ment may be reproduced into, stored in, or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photo-
copying, recording, or otherwise), or for any purpose, without the express written permission of MaxLinear, Inc.
Maxlinear, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reason-
ably 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 MaxLinear, Inc. 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 MaxLinear, Inc. is adequately protected under the circumstances.
MaxLinear, Inc. may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this docu-
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Rev 1C