AM5718: HS200 eMMC reference design

Tony Tang

Mastermind 29932 points

Part Number: AM5718

ls there a EVM board supports HS200 eMMC for reference?

over 2 years ago

0 Praveen Rao over 2 years ago

TI__Mastermind 49573 points

Hello Tony,

The AM5718 data manual chapter 7.24.2 MMC2 - eMMC does confirm support for HS200.

Pls see AM572x EVM and the user_guide mentions that the EVM has the Kingston 4GB eMMC Flash Memory (EMMC04G-S100-B08U), which does support HS200.

Thanks.

0 Tony Tang over 2 years ago in reply to Praveen Rao

TI__Mastermind 29932 points

Praveen,

It is said something should be 1.8V in HS200, but this schematic is 3.3V.

Which dts file belongs to AM572x EVM ? In am57xx-beagle-x15-revc.dts, or dra72-evm-revc.dts

0 Josue Zamitiz-Ayala over 2 years ago in reply to Tony Tang

TI__Mastermind 36356 points

Hello Tony,

For the eMMC in AM572x EVM, although it is capable of operating in HS200 mode, the board itself was likely not designed to make use of this feature as shown by the schematic you are providing.

With regards to your query on the DTS file, you can find this information on the board config file provided here:

https://git.ti.com/cgit/ti-u-boot/ti-u-boot/tree/configs/am57xx_evm_defconfig

You can search for:

CONFIG_DEFAULT_DEVICE_TREE

Best,

Josue

0 Tony Tang over 1 year ago in reply to Josue Zamitiz-Ayala

TI__Mastermind 29932 points

Josue,

Customer asks for a eMMC HS200 hardware reference design for AM572x, Can you help?

0 Josue Zamitiz-Ayala over 1 year ago in reply to Tony Tang

TI__Mastermind 36356 points

Hello Tony,

I am out of the office until Apr 11th, please expect a delay in response.

I appreciate your patience.

-Josue

0 Josue Zamitiz-Ayala over 1 year ago in reply to Josue Zamitiz-Ayala

TI__Mastermind 36356 points

Hello Tony,

I don't believe we have a reference design for this specifically. You can look at our EVMs as a reference but my guess is that this was never a requirement so this HS200 feature was never validated.

I will reassign your thread to our HW Apps team.

Best,

Josue

0 Matt Park over 1 year ago in reply to Josue Zamitiz-Ayala

TI__Expert 3150 points

Hi Tony,

Tony Tang said:
It is said something should be 1.8V in HS200, but this schematic is 3.3V.

Where did you find that the lines should be 1.8V instead of 3.3V? I believe HS200 mode should be available to use in TI's EVM as stated in the datasheet.

Best Regards,

Matt

0 Tony Tang over 1 year ago in reply to Matt Park

TI__Mastermind 29932 points

Hi Mark,

Do you mean HS200 can work at 3.3V VCCQ although eMMC support dual voltage

Can we just change the upper schematic to connect VCCQ to 1.8V and pull up data line to 1.8V to work at 1.8V IO for HS200?

0 Matt Park over 1 year ago in reply to Tony Tang

TI__Expert 3150 points

Hi Tony,

Apologies for delay in response. Yes – all the higher data rates are only supported at 1.8V IO (as indicated in the info below from the TRM).

Best Regards,

Matt

Processors

Processors forum

AM5718: HS200 eMMC reference design