AM2634: Unable to read memory above 8mb

mykola Sliusarev

Part Number: AM2634

Hi Experts,

I According to spec board has 16mb NOR flash, but there is an issue when I am trying to read data from NOR flash above 8MB,

I simple use TI examples qspi_flash_dma_transfers.c to perform RW testing but modify flash offset to 10mb #define APP_QSPI_FLASH_OFFSET (0xA00000U)

When I use jtag debugger for read data it seems like data write works well but read return ff,ff,ff,ff.

Do you have any clue what is the problem ?

Regards Mykola

over 2 years ago

+1 Aakash Kedia over 2 years ago

TI__Mastermind 26145 points

Hi mykola Sliusarev,

Check for the silicon errata document.

Link to the Errata Document - https://www.ti.com/lit/er/sprz488c/sprz488c.pdf

Best Regards,
Aakash

0 David DeBaun over 1 year ago in reply to Aakash Kedia

Intellectual 405 points

Will this 8MB limit silicon issue be corrected in the next silicon rev? If so, what is the planned timing for that?

0 Aakash Kedia over 1 year ago in reply to David DeBaun

TI__Mastermind 26145 points

Hi David DeBaun,

The issue only exists for memory map mode. However you can use configuration mode or indirect access mode to access the entire memory. The driver support shall be available by 09.01 release of SDK.

For more details on upcoming silicon revisions, please reach out to your TI sales representative.

Best Regards,
Aakash

Arm-based microcontrollers

Arm-based microcontrollers forum

AM2634: Unable to read memory above 8mb