Cirrus Logic CS8952 - Manual (Page 6)

6 DS206DB2
CDB8952
Crystal LAN™ 10Base-T and 100Base-X Transceiver
CIRRUS LOGIC ADVANCED PRODUCT DATABOOK
The X-1000 state machine is dependent on
TX_CLK resulting in a mutually exclusive condi-
tion. It will not de-assert TX_EN without TX_CLK
present. This behavior has only been seen on Net-
com X-1000 test hardware.
Work-around: Power on the X-1000 with the Net-
com supplied transceivers. Remove one or both
transceivers and replace with the CBD8952.
This incompatibility will be addressed in Rev C. of
the CS8952.