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05/14/99
Errata: CS61581 Revision H
(Reference CS61581 Universal Line Interface Data Sheet (DS211PP7 FEB'99))
This document is an update of the errata for revision E of the CS61581. There are no known differences between Revision H and the referenced data sheet.
Status of previous errata
The errata for revision E referred to data sheet DS211PP7, dated FEB 99. 1. Short-Haul-Low Impedance Long Line Length Pulse Shape Issue * * Rev E: The pulse shapes for the low-impedance E1 modes required 15 resistors, while the data sheet gave a value of 9.1. Rev. H: The device has been modified to eliminate this requirement. The 9.1 resistors can now be used for both T1 and E1 low impedance applications. Rev. E: TCLK was required during TAOS to prevent the transmitter from going into its high impedance mode. Rev. H: TCLK is no longer required during TAOS. Rev. E: The load presented to the quartz crystal did not meet the data sheet specification of 19pF. Rev. H: The load presented to the quartz crystal is now 19pF, as stated in the data sheet.
2. Transmit All Ones Select (TAOS) Issue * * * *
3. Oscillator Loading Issue
The device revision is the letter before the 4 digit assembly date code in the second line of the package marking. Inquiries regarding this errata may be directed to your local sales office, representative, or distributor. A listing of these offices may be found at http://www.cirrus.com
Cirrus Logic P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.crystal.com
ER211C1 MAY `99 1

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