03/25/99
Errata: CS8952-CQ Rev F Performance Update
(Reference CS8952 Data Sheet revision PP1 dated April '98) *
When the CS8952 is configured for 10Mb operation, loopback mode is enabled by setting loopback (bit 14), in the Basic Mode Control Register, register 0h, and clearing Enable LT/10 (bit 5) in 10BaseT Configuration Register, register 1Ch. Loopback mode should require only setting the loopback bit. A clock level input on the AN[1:0] pins does not set the Auto-negotiation Advertisement Register Technology Ability field correctly when TX_CLK is used as an input. Workaround: Tie the TX_CLK source to the XTAL_I pin as well as TX_CLK.
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During auto-negotiation using Next Pages, both partners must send an equal number of Next Pages (both link partners must have NP bit = 1). If either partner attempts to send more Next Pages than the other this will cause both devices to time out. Workaround: Please contact Cirrus Logic applications support.
If there are any questions concerning this information, Please contact: James Ayres (512) 912-3827
Cirrus Logic P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.crystal.com
ER206D1 MAR `99 1
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