LPC4337 and eMMC, iNAND, moviNAND

[lpcware]

Content originally posted in LPCWare by snovik on Mon Jun 30 23:50:16 MST 2014
Hello.

Does this controller support these standards, and if so, what versions?

[lpcware]

Content originally posted in LPCWare by snovik on Tue Sep 08 02:29:35 MST 2015
I'm using library LPCOpen.
The datasheet contains support for MMC, but not shown in the library setting the buswidth for MMC. It only SD.

How to install 4bit buswidth?

[lpcware]

Content originally posted in LPCWare by snovik on Sun Sep 06 21:35:18 MST 2015
Hello.

This is code switch a buswidth to the 8bit, as I understand

status = sdmmc_execute_command(pSDMMC, CMD_MMC_SWITCH, ((3<<24) | (183<<16) | (2<<8)), 0);

How to change this string to 4bit?

[lpcware]

Content originally posted in LPCWare by laogan666 on Wed May 20 23:14:22 MST 2015
hello,i have a problem when i switch to 8 bit wide: I also have the code
status = sdmmc_execute_command(pSDMMC, CMD_MMC_SWITCH, ((3<<24) | (183<<16) | (2<<8)), 0);
But i can not read data correctly,the status back is 0x00002004,Did you have the same problem?

[lpcware]

Content originally posted in LPCWare by frankeggink on Mon Nov 10 06:57:00 MST 2014
Thanks,

I'm doing the same, but i'm sending a command for 4-bit mode.
Think i have to do more testing and reading to solve my problem.

[lpcware]

Content originally posted in LPCWare by wlamers on Mon Nov 10 06:28:01 MST 2014
I quickly checked it. THis is how I switch to 8 bit wide:

status = sdmmc_execute_command(pSDMMC, CMD_MMC_SWITCH, ((3<<24) | (183<<16) | (2<<8)), 0);

[lpcware]

Content originally posted in LPCWare by frankeggink on Mon Nov 10 04:39:18 MST 2014
I'm able to read, write data to the micron emmc in 1 bit mode.
I can also do this at 26 and 52 Mhz.

I've tried to switch the cards bus width with (CMD6) to 4 bit, but when i do that i get a DCDC error (data crc).

And when i change to 4bit mode (using CMD6) and then issue a (cmd8) to get the ecsd information. I get a (start bit error)

Any ideas?

Best Regards,

Frank

[lpcware]

Content originally posted in LPCWare by wlamers on Fri Nov 07 03:38:09 MST 2014
Well as said above, write is about 7 MB/s, read 27 MB/s. Both with an 8 bit wide interface. I didn't do tests with a 4 and 1 bit interface. I think however that read speed wouldn't suffer much with a 4 bit interface. I didn't notice any problems with delays.

[lpcware]

Content originally posted in LPCWare by frankeggink on Fri Nov 07 02:43:50 MST 2014
Hello,

The LPC4337 doesn't differ much from the LPC4357, i'm using a smaller chip size (144 pins) and only have 4 bit sdmmc.
I'm also using a micron emmc chip (similar to the one you are using).
Could you tell me how fast you can write to the chip. (in 1 bit, 4 bit and 8 bit mode)?
Did you have any problems with delays between command send to the emmc chip?

Thanks!.

Best Regards,

Frank

[lpcware]

Content originally posted in LPCWare by wlamers on Thu Nov 06 08:56:29 MST 2014
Hello Frank,

It's a LPC4357 with a Micron MTFC32GJDDQ-4M IT. Works on 8 bit, but I am not sure if the lpc4337 differs (guess not).

The write speed is rather slow. Read is fast enough for my application though (~27 MB/s).

Took me a lot of time to get it working. You have to go through a lot of documentation.

If you can get away with an SD-card that would definitly be much easier.

[lpcware]

Content originally posted in LPCWare by frankeggink on Wed Nov 05 10:09:55 MST 2014
Hello,

I'm also using the LPC4337 with a micron 4GB eMMC card.
But i thought it was only possible to use mci with 4 bit wide bus.

Which processor and memory are you using?

Best Regards,

Frank

[lpcware]

Content originally posted in LPCWare by wlamers on Wed Nov 05 09:55:14 MST 2014
Hello Frank,

Yes I have, eventually.... Using the MCI, 8 bits wide. But write speed is limited to 7 MB/s. Probally due to the eMMC.

[lpcware]

Content originally posted in LPCWare by frankeggink on Wed Nov 05 08:56:14 MST 2014
Hi,

Do you have emmc working with a lpc43xx?

Best Regards,

Frank

[lpcware]

Content originally posted in LPCWare by snovik on Tue Jul 08 23:07:34 MST 2014
Can I work with eMMC using SDIO interface lpc4337?

[lpcware]

Content originally posted in LPCWare by schisanoa on Mon Jul 07 08:34:32 MST 2014

---

Quote: wlamers
eMMC is possible, even with the 8 bit interface. Performance depends mostly on the eMMC itself. I achive 27 MB/s read, and 7 MB/s write speeds with a Micron eMMC.

---

did you use the MCI interface?

[lpcware]

Content originally posted in LPCWare by schisanoa on Mon Jul 07 03:32:22 MST 2014
About the eMMC attention to the version because in the latest version JEDEC removed the SPI interface.

[lpcware]

Content originally posted in LPCWare by wlamers on Mon Jul 07 03:27:36 MST 2014
eMMC is possible, even with the 8 bit interface. Performance depends mostly on the eMMC itself. I achive 27 MB/s read, and 7 MB/s write speeds with a Micron eMMC.

[lpcware]

Content originally posted in LPCWare by bavarian on Fri Jul 04 07:37:58 MST 2014
It doesn't support NAND flashes with a dedicated interface. That's more the type of memories used in the application processor world (ARM9, Cortex-A).
But you could realize a NAND interface with a combination of hardware and software.
eMMC is based on MMC and this is supported by the SD card interface or standard SPI interface.

Regards,
NXP Support Team.