Forums » Software Development »
AM62A module SODIMM pinout documentation error
Added by Pal Szabo 5 months ago
In the AM62A module datasheet page 17 there seems to be an error for the SODIMM pin 255. It is indicated to be connected to AM62A ball B11, but it is actually connected to C10 instead. It is important for the pinmux configuration or editing the device tree.
Replies (6)
RE: AM62A module SODIMM pinout documentation error - Added by Jonathan Cormier 5 months ago
You are correct. Thanks for bringing this to our attention.
RE: AM62A module SODIMM pinout documentation error - Added by William Evans 5 months ago
Pal,
While going over the SODIMM pinout in our datasheet I noticed a couple more errors. We are working releasing a new revision to the datasheet but in the meantime the other issues are listed below:
External connector pin 99 signal should be RGMII2_TXC (it is RGMII2_RD2 in the datasheet).
External connector pin 101 signal should be RGMII2_TD2 (it is RGMII2_TXC in the datasheet).
External connector pin 103 signal should be RGMII2_RD2 (it is RGMII2_TD2 in the datasheet).
External connector pin 247 is connected to ball D13 (it is E12 in the datasheet).
External connector pin 249 is connected to ball E13 (it is D9 in the datasheet).
External connector pin 255 is connected to ball C10 (it is B11 in the datasheet) as you've pointed out above.
RE: AM62A module SODIMM pinout documentation error - Added by Pal Szabo 3 months ago
William,
I see that you have released an update to the datasheet. Unfortunately it is contradicting now. The 3rd column is changed in the respective table, but the pinmux alternatives and the BGA ball numbers are unchanged (columns 5-15). I suppose column 3 is correct, as indicated in your previous post.
RE: AM62A module SODIMM pinout documentation error - Added by David Van Sickle 2 months ago
Hello,
This was brought to my attention and I decided to do a quick check of these pins on the AM62 Dev board schematic, which our current work is based around.
On the schematic symbol for the MitySOM_AM62: pins 99, 101, 103 agree with the statement above, but pins 247, 249, 255 are labeled as going to different pins entirely:
247 to B4
249 to A9
255 to C6
I suspect the schematic symbol may have been made while the final SOM design was in flux, so it makes sense to double check it with the latest pinout. Do you know if there is a specific document that best reflects the final SOM? Would it be the latest datasheet?
Thanks
RE: AM62A module SODIMM pinout documentation error - Added by Michael Williamson 2 months ago
Hi David,
The symbol for the MitySOM-AM62 DevKit is for the MitySOM-AM62x and we have verified it is correct. The information in the thread above is for the datasheet for the MitySOM-AM62Ax.
While the DevKit board is compatible with both the MitySOM-AM62x and the MitySOM-AM62Ax, the SOM symbol pins in the DevKit schematic netnames are only applicable for the AM62x processor. The datasheet should be referenced for the raw AM62Ax balls on the MitySOM-AM62A. The Symbol net names on the devkit connector symbol should be accurate, just not the balls, when considering the MitySOM-AM62Ax option.
I am sorry for the confusion.
The Devkit is designed to work (and has been tested with) both the MitySOM-AM62x and the MitySOM-AM62Ax.
With regards,
Mike
RE: AM62A module SODIMM pinout documentation error - Added by David Van Sickle 2 months ago
My mistake. I completely missed the A when I saw this thread. :)
Thanks,
David
