TDA2: TDA2SX EMIF DDR3

Yuri Oreshnikov

Part Number: TDA2

Hi.

We are ging to use this IC. So can we use only one emif1 interface with DDR3 or we must use both emif1 and emif2 with DDR3?

Thnks.

over 6 years ago

0 Rishabh Garg over 6 years ago

TI__Guru 55685 points

Hi,

You can use only one EMIF as well depending on the use case requirements.

Regards,

Rishabh

0 Yordan Kamenov over 6 years ago in reply to Rishabh Garg

TI__Mastermind 42515 points

Hi Yuri,

in addition to what Rishab said: if you want to use only EMIF1 or EMIF2 you need to correctly configure the LISA_MAP registers in DMM. This is explained in section “Addressing Management with LISA” of the TDA2x TRM. Take also into account that when you use only one EMIF, the max SDRAM size is 2GB.

Regards,
Yordan

0 Maxim Galkin41 over 6 years ago in reply to Yordan Kamenov

Intellectual 425 points

Hi Yordan.
I have a little question. In TRM written " In this example, assume there is 1 GiB of external memory evenly spread onto two address spaces. The address range for address space 0 must start at offset 0x2000_0000 (see Table 15-19)." Summary address space is 1 GiB in table 15-19. How can I connect 2 GiB memory to EMIF1?
I want to use only EMIF1 with ECC too. I want to use 2 ICs MT41K256M16 and one IC MT41K512M8 for ECC. Is that correct configuartion?
Regards, Maxim.

0 Rishabh Garg over 6 years ago in reply to Maxim Galkin41

TI__Guru 55685 points

Hi,

If you want to use 2 GB DDR, you should set 0x7 as SYS_SIZE in LISA_MAP.
For the question related to hardware parts please start a new thread.

Regards,
Rishabh

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TDA2: TDA2SX EMIF DDR3