Hi,
I have a question about chirp timing of USB Host connection.
I think chirp timing like a below.
I think output timing of HUB K-J Chirp pairs after detecting Device K Chirp controlled by HW because it must be less than 100uS.
Is this correct that HW control timing after Device K Chirp?
Best Regards,
Sugiyama
Hi,
You could refer to “i.MX6/7 Series USB Certification Guide” document regarding this kind of USB specifications of i.MX6 and i.MX7 processors. This document is available at the following link:
http://www.nxp.com/assets/documents/data/en/user-guides/IMXUSBCGUG.pdf
Hope this will be useful for you.
Best regards!
/Carlos
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Hi, Carlos,
Thank you for information.
The issue was Hub K-J chirp doesn't start immediately after device K chirp. However, it was resolved after device move to another board. It sees it was board issue.
Thanks,
Sugiyama