Where can we found the document which tell how to assign DDR memory on K2 tci6638 like DM6446

Hi,My dear experts on  keystone Multicore Forum :

Why I cannot found any document which tell how to assign DDR memory on tci6638EVM ?

I had XTCIEVMK2X Rev1.1 board on my hand.There were DDR3A and DDR3B on the EVM board.

But I cannot find any datasheet or document which tell how to assign DDR memory including DDR3 and DDR3B.

Without that document, I don't know how much DDR3A can be assigned to ARM_A15 ,how much DDR3A

can be assigned to DSP(c6678).

I also don't know how much DDR3B can be assigned to ARM_A15 and How much DDR3B can be assigned to DSP_C6678.

I go back to Davinci  processor_DM6446. I could find that document which told very clearly on SPRAAK7 page 13

or 14.Below was the figure I cut from that datasheet SPRAAK7.

With the picture everything became easily. The memory map was totally under control.

Why I cannot got that document on tci6638evm? Did ti engineers consider it unnecessary?

If something wrong ,Please tell me any time.And any help will be appreciated.

Regards!