AM2434: PSRAM Enable-Disabled

Hi DJ,

1) how to access PSRAM?

You can access to PSRAM via GPMC

2) How to PSRAM Enable or Disabled?

You will need to set up the GPMC for it to access PSRAM. Please refer to 12.3.3 General-Purpose Memory Controller (GPMC) of AM243x TRM (www.ti.com/.../spruim2) for details.

3) What is the requirement for the access PSRAM? ( i.e. Any register set high/low or any changes)

See answer to 2)

4) how to read/write PSRAM?

Once the GPMC is set up properly, you can use the dedicated memory address space: GPMC0_DATA 0x050000000 0x057FFFFFF 128 MB to access the PSRAM.

  
5) How to set only read mode?

You can use the ARM MPU settings to make the PSRAM region as read only mode. Open the example.syscfg file in example CCS project with SysConfig. Check for the MPU settings:

Best regards,

Ming

Hi DJ,

Sorry for the incomplete URL. Please try this one: https://www.ti.com/lit/ug/spruim2e/spruim2e.pdf

Best regards,

Ming