OMAPL137 - Shared RAM doesn't work

Embedded Solutions

Other Parts Discussed in Thread: OMAPL138

Hi all,

we have a custom board based on OMAPL137, we noticed that we are not able to load program into Shared RAM (0x8000000) or DSP L2 RAM (0x11800000).

What we get form CCS4 is:

C674X_0: File Loader: Data verification failed at address 0x8000DD18 Please verify target memory and memory map.
Error found during data verification.
Ensure the linker command file matches the memory map.

For example we want to write value 2 under 0x8000200;

The result after write operation is:

The same situaltion is with DSP L2 RAM (0x11800000). DSP L1 RAM works fine. What can couse data corruption, it is possible that device is bloken ?

PLL problem ? Or decoupling capacitors ? JTAG ?

Regards Grzegorz

over 14 years ago

0 Embedded Solutions over 14 years ago

Intellectual 390 points

Hi,

we check OMAPL138 EVM from spectrum digital (XOMAPL137) and it works as expected (no problem with Shared RAM and DSP RAM). On custom board we checked with different CPU clock

PLLM=12

PLLM=6

PLLM=4

PLLM=1

But the problem still ocures. Any idea what can couse this issue ?

Regards Grzegorz

0 Awais Masood over 14 years ago in reply to Embedded Solutions

Intellectual 445 points

Hi,

Checking the power and sleep controller configurations would be a good idea. As per TRM, the Shared RAM (BR13) should be enabled by default but one cannot rule out it being disabled during startup configuration.

Regards,

Awais Masood

Mentor Embedded

Nucleus | Services | UI | Multi-OS

0 Embedded Solutions over 14 years ago in reply to Awais Masood

Intellectual 390 points

Hi,

we checked startup configuration with reference board form Spectrum Digital and there is no issue with Shared Ram we can write/read from memory without problems.

The same configuretion doens't work on our custom board. It seems that device is broken, we are wainting for the prototypes at the moment we have only one.

Regards Grzegorz

0 Mukul Bhatnagar over 14 years ago in reply to Embedded Solutions

TI__Guru* 85105 points

Can you make sure that on your custom board, the RVDD / ram power pins (I believe it is H6,H12) are connected to power (1.2V) appropriately.

Regards

Mukul

Processors

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OMAPL137 - Shared RAM doesn't work