TI Cortex A-8 devices that support 2GB Flash

Aritra Paul

Prodigy 100 points

Other Parts Discussed in Thread: AM3715

Hi there!

Are there any Sitara devices that support 2GB Flash? This is for the development of an aircraft HMI.

Thanks!

Ari

over 12 years ago

0 Biser Gatchev-XID over 12 years ago

TI__Guru**** 393215 points

Hi Ari,

If you mean NAND flash there is no issue. For NOR flash there are GPMC addressing space limitations.

0 Aritra Paul over 12 years ago in reply to Biser Gatchev-XID

TI__Prodigy 100 points

Hi Biser,

Thanks for your reply! Would AM3715 be able to support 2GB NAND?

Ari

0 Biser Gatchev-XID over 12 years ago in reply to Aritra Paul

TI__Guru**** 393215 points

NAND memory uses an 8 or 16 bit interface, through which commands, address and data are transferred. In general AM3X processors support 2GB NAND memories. eMMC memories are also supported.

0 Aritra Paul over 12 years ago in reply to Biser Gatchev-XID

TI__Prodigy 100 points

Thanks Biser. Could you clarify the below for me?

Eight independent GPMC chip-selects (gpmc_ncs0 to gpmc_ncs7) are available in the first quarter
(Q0) of the addressing space to access NOR/NAND flash and SRAM memories. The chip-selects have
a programmable start address and programmable size (16, 32, 64, or 128MB) in a total memory space
of 1GB.

Excerpt from the TRM of the AM3715.

Ari

0 Vageesh KM over 12 years ago in reply to Aritra Paul

Expert 1075 points

Hi,

Yes it is possible and even more it can be interfaced. Attached document which explain about the interface used for NAND and NOR flash.8686.tn2919.pdf

0 Biser Gatchev-XID over 12 years ago in reply to Aritra Paul

TI__Guru**** 393215 points

I guess you are confused by the 128MB size limitation. This applies to NOR memories only. If you read through the GPMC section of the TRM you will see that there are separate configuration registers for NAND access.

0 Aritra Paul over 12 years ago in reply to Biser Gatchev-XID

TI__Prodigy 100 points

Alright Biser, Vageesh,

Thank you!

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TI Cortex A-8 devices that support 2GB Flash