AnsweredAssumed Answered

LS1021A - USB 3.0 Port will not enumerate at USB 2.0 High Speed

Question asked by Steve Merritt on May 16, 2018
Latest reply on May 22, 2018 by Yiping Wang



I'm currently looking at an issue with the LS1021a whereby the USB 3.0 port enumerates fine at both at SS & FS, but is not enumerating at HS.


Looking at the USB DP/DM pair with a scope, the LS1021A is not putting out a K-chirp during reset after the bus enumerates at FS.


Has anyone else encountered this problem?


Thanks and best regards,