EDMATC registers

Takahiro Ogo

Hi,
I'm using AM335x StarterWare ver02_00_00_07.

There is an unclear EDMA configuration in the AM335X_StarterWare_02_00_00_0/\platform\evmAM335x\edma.c

edma.c, line 252--------------------------------------

/* DMA in non-idle mode */
HWREG(0x49800010) = 0x00000028;
HWREG(0x49900010) = 0x00000028;
HWREG(0x49a00010) = 0x00000028;

------------------------------------------------------------

What 's this 0x49800010, 0x49900010 and 0x49A00010?

I'm not sure what those registers are, as they are not described in the EDMATC registers list in AM335x TRM.
Please let me know about this registers.

-Takao

over 13 years ago

0 Takahiro Ogo over 13 years ago

Genius 5940 points

can anyone help me？

0 Radhesh Bhat over 13 years ago in reply to Takahiro Ogo

Genius 4590 points

Hi Takao,

These registers seem to be RSVD according to the TRM, did you try commenting out these lines and see any impact on your program?

0 Takahiro Ogo over 13 years ago in reply to Radhesh Bhat

Genius 5940 points

Hi Radhesh,

Thank you for your post.
I already saw the default value of these registers after power-on-reset on AM335x evm by ccs .
These value were 0x00000028. So I think these code don't have any impact.

However, Are there any reason to configure these register on StarterWare?
(If there's no meaning in it, why there are these code on StarterWare.)

Best Regards.

Takao

Processors

Processors forum

EDMATC registers