DM3730: DM3730 without nand flash bootup

PENG Frank

Part Number: DM3730

Dear Ti Team:

I have current design upgrade project need to launch, our current design is platform is DM3730CBPA， but the pop LPDDR is going to EOL and without alternative part,

So, we need to evaluate DM3730CUSA (without pop process), I found a question:

1. if we use eMCP (one chip integrate LPDDR and Nand flash), we found the eMCP still may EOL in the next years;

2. if we use LPDDR(only mobile LPDDR) , we want to confirm the minimum system as belowing diagram is ok to boot up and operate, nor flash as the bootup flash, without nand bootup

Frank

over 1 year ago

0 PaulM over 1 year ago

TI__Mastermind 29455 points

Frank

Someone should respond to this shortly.

--Paul

0 PENG Frank over 1 year ago in reply to PaulM

Prodigy 80 points

hi Paul:

ok，could you provide the link, thanks

0 PaulM over 1 year ago in reply to PENG Frank

TI__Mastermind 29455 points

Not sure what link you are referring to?

I have reached out to the expert for their input which will be posted here.

--Paul

0 PENG Frank over 1 year ago in reply to PaulM

Prodigy 80 points

hi PaulM:

Is there any feedback about the nor flash boot up solution, if we have not nand flash,

sysboot config setup ,or any circuit need to design to set Nor flash as primary boot up device. thanks

0 PaulM over 1 year ago in reply to PENG Frank

TI__Mastermind 29455 points

Not yet, I'll follow-up tomorrow.

--Paul

0 JJD over 1 year ago in reply to PaulM

TI__Guru* 91360 points

yes, this should be fine. Note that the nor flash will be XIP boot. Please consult the TRM Chapter 26 for details

Regards,

James

0 PENG Frank over 1 year ago in reply to JJD

Prodigy 80 points

hi James:

thanks ,should I connect CS0 to CS2（which CS2 to the Nor flash CS control）

0 PENG Frank over 1 year ago in reply to PENG Frank

Prodigy 80 points

also My nor flash is noly 32MB capa, so does it meet the nor flash boot up requirements,

0 JJD over 1 year ago in reply to PENG Frank

TI__Guru* 91360 points

Refer to section 26.4.7.3 in the TRM

Regards,

James

0 PENG Frank over 1 year ago in reply to JJD

Prodigy 80 points

hi James:

thanks, For my schematic use the norflash ,which mode should I chose?

My nor flash use latch to extend the address, part number is MT28EW256ABA1LPC-0SIT , 32MB ,

0 JJD over 1 year ago in reply to PENG Frank

TI__Guru* 91360 points

You have the flexibility to choose either. The Micron device you quote would not work, since it has separate addr/data bus signals. As the TRM states, you need to chose a device with multiplexed addr/data bus

Regards,

James

0 PENG Frank over 1 year ago in reply to JJD

Prodigy 80 points

James,

this Nor part for me is a task that cann't not be changed, still thanks for your attention and reply,

Best Regards~

Frank

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DM3730: DM3730 without nand flash bootup