AM2634: Access GPMC interface to HSEC connector

Alex Paul

Expert 5955 points

Part Number: AM2634

Hi experts,

I am using the TMDSCNCD263 and want to bring the GPMC to the HSEC connector.

Looking at the schematics:

There would be the need to mount the resistors shown above.

Can you approve that there is not any other step I have to do ?

Regards,

Alex

over 2 years ago

0 Brennan Hartigan over 2 years ago

TI__Genius 13629 points

Alex,

You are correct. For HW configuration, depopulate RA2, RA4 and populate RA1, RA3.

In addition, you will need to pull the ICSSM MUX SEL lines high to route the signals to HSEC. This affects MUXes U21, U17, and U8.

ICSSM1_MUX_SEL and ICSSM2_MUX_SEL must be pulled high. This is done with the IO Expander (U50) - P02 and P03.

You will also need to pull the RGMII MUX SEL line high to route to HSEC. This affects MUX U58. The SEL line comes from IO Expander P10.

The SDK example at C:\ti\mcu_plus_sdk_am263x_09_01_00_41\examples\drivers\gpmc\gpmc_psram_io does this for you, but I wanted to explain the other configurations that occur to get GPMC signals at the HSEC pins.

Regards,

Brennan

0 Dennis Tyczkowski over 2 years ago in reply to Brennan Hartigan

Prodigy 20 points

Hi Alex,

Thanks for the feedback.

I do not have the SDK example C:\ti\mcu_plus_sdk_am263x_09_01_00_41\examples\drivers\gpmc\gpmc_psram_io that you referred to. It was not in the latest download, is there somewhere else I can get it?

-Dennis

0 Brennan Hartigan over 2 years ago in reply to Dennis Tyczkowski

TI__Genius 13629 points

Dennis,

You can download the latest version of the SDK here, which includes the GPMC example:

https://www.ti.com/tool/MCU-PLUS-SDK-AM263X#downloads

Regards,

Brennan

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AM2634: Access GPMC interface to HSEC connector