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Tool/software:
Dear TI E2E team,
We are trying to achieve 480Mbps speed using the TUSB4041I USB hub but we are only able to achieve 12Mbps speed. Please check attached screenshot.
Our schematic has been attached with this email for your kind perusal.
We have reviewed the slla429 as well and the document is attached with this email. We tried various options for the R1 resistor as well but were not able to achieve 480Mbps.
Can you please advise what we may be missing?
- Ambimat Team
Hi Marguh:
Can you remove R77 on GRSTz, R96 on SMBUSz and try again?
Best
Brian
Hi Marguh::
maybe you already tried to remove R77 and R96,
Can you take waveform for 1.1v/3.3v and GRSTz signal?
Best
Brian
Hi Brian
We remove R77 and R96
then waveform show below
Orange signal indicate 3v3 and Blue signal indicate 1v1
Orange signal indicate 3v3 and Blue signal indicate GRSTz
But still Down stream port speed is only 12 MBPS as show in above figures and video.
please reply me asap for the same.
Hi Marguh:
I asked for waveform when hub device was powered on . Can you take waveform again?
Can we have a call sometime early next week?
Best
Brian
Hello Brain
We tested C60 with 1uf on GRSTz but still speed is 12 MPBS
Here orange signal is indicate GRSTz with C60 is 1uF
We are in INDIA, please provide your availability as per India time zone so we connect in Google meet or Microsoft teams.
And We solve keyboard detection issue and Downstream speed issue asap.
Thanks and Regards,
Ambimat Teams
Hi Ambimat team:
I am available at Dallas time 8:30pm to 10pm . I can use Microsoft teams. Please send meeting link.
Best
Brian
We change the Pull up Res in Up Stream port which is connected with RPi and Res value is 1.5K
Thank you for your Support
Best and Regards
Ambimat Teams