Search found 4 matches

by cbrieske
Fri Feb 25, 2022 3:05 am
Forum: General Discussion
Topic: EMAC LL Descriptors
Replies: 4
Views: 4397

Re: EMAC LL Descriptors

Thanks Sprite. I've only just seen your edit, and haven't spent any more time on this since. Perhaps you can pass the following query along to clear up some of my confusion: Can this 64 bit counter be read or set? According to the TRM, "When the Advanced Timestamp feature is present" RDES0 Bit 0 ind...
by cbrieske
Tue Aug 04, 2020 7:26 am
Forum: General Discussion
Topic: EMAC LL Descriptors
Replies: 4
Views: 4397

Re: EMAC LL Descriptors

Unfortunately no. There is an unfortunate lack of information around how to actually enable the timestamping features. Unless i'm missing something obvious, I cant seem to get any timestamps for either TX or RX frames. But I also dont know where the timestamp values are actually derived from. Both o...
by cbrieske
Wed Sep 25, 2019 11:19 am
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 426
Views: 840103

Re: What would you like to see in The Next Chip?

5ghz WiFi
EMAC with 1588 supports (Maybe RGMII?)
by cbrieske
Tue Sep 24, 2019 7:53 am
Forum: General Discussion
Topic: EMAC LL Descriptors
Replies: 4
Views: 4397

EMAC LL Descriptors

I have a few questions related to PTP (IEEE1588) support on the EMAC. According to the technical reference manual, TDES6 & TDES7 are updated with the timestamp captured for the corresponding transmit frame. What is not clear, is where this timestamp is sourced from. Is anyone able to shed any light ...