Mity CPU Platforms » MitySOM-A10S Altera Arria 10

08/15/2023

MW 08:49 PM Software Development: RE: Mitysom a10s does not start under U-Boot 2021.04

Hi Dmitry,
The REFCLK_GXBL_ signals are AC coupled to the PLL chip, so the common mode
should be less of an issue.
With regards,
Mike Michael Williamson

DK 07:50 PM Software Development: RE: Mitysom a10s does not start under U-Boot 2021.04

Hi, Dan
I found discrepancy:
In Arria 10 and SI5338 datasheets voltage values are significantly different.
May be this is the reason why I don't see REFCLK_GXBL_... signal in Signal tap after divider?
Br, Dmitry.
Dmitry Kolotsei

DK 07:38 PM Software Development: RE: Replacement UBoot 2014.10 on 2021.04

Hi, Mike
I found than dedicated pins i2cemac2 were not configured well.
After fix this I saw the correct status 0x06 on the I2C bus and saw SI5338 is reconfigured.
Thank you.
Br, Dmitry. Dmitry Kolotsei