3 Replies Latest reply on Apr 15, 2019 3:07 AM by AbhinavG_21

Store data in eMMC via Async SRAM interface

yhkim6150_1490531 Mar 31, 2019 7:58 AM

Hi.

The circuit was designed using TI's TMS320F28377 and Cypress's FX3S (CYUSB3035).

Writing and reading S-Port (eMMC) data via USB succeeded.

However, it failed to write data to the eMMC through TI's TMS320F28377 16-bit Data Bus.

If you have a source file for my reference, please help me.

Thank you.

1. Re: Store data in eMMC via Async SRAM interface

AbhinavG_21 Apr 8, 2019 12:31 AM (in response to yhkim6150_1490531)

Hi Kim,

Kindly go through the following firmware example that comes along with FX3 SDK. This example firmware performs GPIF to S-Port data transfer.
C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3\firmware\gpif_examples\cyfxgpiftostorage

Thanks & Regards
Abhinav Garg
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2. Re: Store data in eMMC via Async SRAM interface

yhkim6150_1490531 Apr 14, 2019 8:59 AM (in response to yhkim6150_1490531)

Hi Abhinav Garg

MCU and FX3S are connected via the SRAM interface as shown below.

I wonder how I can write data to eMMC memory by programming on MCU.
I need an MCU program that I can refer to.
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3. Re: Store data in eMMC via Async SRAM interface

AbhinavG_21 Apr 15, 2019 3:07 AM (in response to yhkim6150_1490531)

Hi Kim,

You have to write a program for MCU (that you are using) to control the GPIF state machine and to put data on the data lanes. We can only provide you the code example for FX3 part. MCU code you have to do it on your own.

Thanks & Regards
Abhinav Garg
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