TDA2P-ACD: CSx Pin for two NAND flash

Andi Sastra

Part Number: TDA2P-ACD

I have questions about pin configuration in TDA2P processor for our custom ECU. We need to connect two parallel 16b NAND Flash over GPMC interface. It means, we should connect following pins: AD[0:16], BEN0, ADVnALE, WEn, OEnREn, WAIT0 parallel to each NAND, and every NAND will have one CS pin. For the 1st NAND we will connect CS0 pin, and for the 2nd NAND we want to use CS3 pin, instead of CS1 or other CS pins, because the pins (CS1 and CS4-CS7) are already used for other functionalities.

The question is, is there any restriction to decide which CSx pin to be used? would it be complex for configuring the Driver related to CSx pin?

We just want to make sure, that configuring the NAND interface wouldn't be complex during board Startup.

both NAND Flash will not be used for booting.

Thanks in advance

over 6 years ago

0 Yordan Kamenov over 6 years ago

TI__Mastermind 42515 points

Hi Andi,

can you first try your configuration in the PinMux tool:
dev.ti.com/.../app.html

and see if it shows some conflicts.

Regards,
Yordan

0 Andi Sastra over 6 years ago in reply to Yordan Kamenov

Prodigy 130 points

Hi Yordan,

i did try with pin mux tool, sorry i Forget to Mention above.

Only two CSx Pins that still open to use, CS0 and CS3.

Regards,
Andi

0 Yordan Kamenov over 6 years ago in reply to Andi Sastra

TI__Mastermind 42515 points

Hi Andi,

I pinged experts to look at your question.

Regards,
Yordan

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

TI__Guru 55685 points

Hi Andi,

There is no restriction as such.
You have to see what pins are available for use and configure the software accordingly.

Regards,
Rishabh

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

TI__Guru 55685 points

Hi,

I haven't heard back from you, I'm assuming you were able to resolve your issue.
If not, just post a reply below (or create a new thread if the thread has locked due to time-out).

Regards,
Rishabh

0 Andi Sastra over 6 years ago in reply to Rishabh Garg

Prodigy 130 points

Hi,

thanks a lot for the answer, then it is clear now

Regards,

Andi

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TDA2P-ACD: CSx Pin for two NAND flash