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by ag2000ir
Wed Apr 08, 2020 3:56 pm
Forum: Compute Module
Topic: CM3 and LAN9514 USB Read Error
Replies: 1
Views: 349

Re: CM3 and LAN9514 USB Read Error

Update: the problem was a wrong capacitor was soldered for the 1uF capacitor. Everything is working fine now except the Ethernet does not work with some routers. No LED blinking or IP assignment. It works with another router I tested and direct connection to the computer. I initially thought it can ...
by ag2000ir
Fri Mar 27, 2020 2:46 pm
Forum: Compute Module
Topic: CM3 and LAN9514 USB Read Error
Replies: 1
Views: 349

CM3 and LAN9514 USB Read Error

I have made a board connecting CM3 to LAN9514 using the official Microchip design guide. It is a 4-layer PCB and the chip has been soldered professionally with X-Ray check. I am getting the following USB error running dmesg and the chip does not get recognised. [Thu Mar 26 16:07:02 2020] usb 1-1: ne...
by ag2000ir
Fri Mar 27, 2020 2:01 pm
Forum: Compute Module
Topic: CM3+ - Connecting LAN9512, but also get USB Slave functionality?
Replies: 8
Views: 1078

Re: CM3+ - Connecting LAN9512, but also get USB Slave functionality?

Correct, you can use the FSUSB chip as shown to switch between 2 modes.
by ag2000ir
Thu Mar 19, 2020 2:53 am
Forum: Compute Module
Topic: Compute Module 3 to LAN9512 error reading from device
Replies: 3
Views: 1021

Re: Compute Module 3 to LAN9512 error reading from device

Can you please explain more how you solved this issue? I am experiencing the same error messages on my board? Was it a soldering issue? or a PCB layout/impedance issue? thank you!
by ag2000ir
Tue Jul 09, 2019 3:06 pm
Forum: Compute Module
Topic: LAN9514
Replies: 28
Views: 8124

Re: LAN9514

Hi there, We have designed our own CM3 board with LAN9514 and the chip operational temperature is significantly higher than that on the RPi. I read the above comments about the power consumption for the Microchip documented operation vs. RPi reduced power approach. I just want to make sure that the ...

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