Original question:
Tool/software:
Hi TI Team,
We have the same problem that we have to address 128 MByte via DAC in the connected SPI device.
Is there a fix or a workaround for the problem?
The mentioned fix activates 4 byte addressing but doesn't solve the 64 MByte address limit problem.
Thank you very much.
Regards,
Josef
Hello Karthik,
we use our own OSPI driver because we are developing a safety critical application.
This issue is seen for writing and reading.
The OSPI controller is configured to
Reading and writing via DAC works fine via MCU_FSS0_OSPI1_R1 data region from address 0x58000000 to 0x5BFFFFFF.
Reading and writing from/to address 0x58000000 is translated to the address 0x00000000 on the SPI bus
If I try to access address 0x5C000004 I can see on the SPI bus (signals recorded with a logic analyzer / bus interpreter) that the OSPI controller sends the address 0x00000004 to the connected SPI device instead of 0x04000004.
So it looks like that the DAC tanslates only 64MByte address space and not 128MByte like described in the TRM.
How can this problem be solved?
Thank you,
Regards,
Josef
