USB 3.0 eMMC Writer Module compatible eMMCs

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tentenberk
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USB 3.0 eMMC Writer Module compatible eMMCs

Unread post by tentenberk » Tue May 14, 2019 5:28 pm

We have been developing a eMMC reader/writer module based on your USB3.0 eMMC Writer Module.

The schematics of eMMc reader module and the eMMC module cards are acquired and a interconnection PCB is developed according to the pinout on these schematics.

With the help of the card we have developed, we plan to integrate the USB3.0 eMMC Writer Module with one of the eMMC memories used in our company.

We assume that the Writer module is compatible with any eMMC which supports HS200 mode.

Manufacturer part number for the memory we use is : MTFC64GAKAEEY-4M IT from Micron Technologies

However, we could not get to see the eMMC as a disk in any OS.

Debugging process has been done and everyting seems to be fine up to eMMC configuration process via CMD line.

Connector we use in the interconnect PCB is the same connector (GB042-34S-H10-E3000) that is used in your eMMC modules.

As far as the debugging, we can say that the CLK and CMD lines are working as the writer module communicates with eMMC.

Do you have any idea what can be the possible problem that we are encountering?

Is there some limitations for the eMMCs that can be used with your writer module?

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odroid
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Re: USB 3.0 eMMC Writer Module compatible eMMCs

Unread post by odroid » Tue May 14, 2019 5:43 pm

We've never tested the Micron eMMC. We've tested Samsung, Toshiba and Sandisk only.
So I can't tell you why your eMMC chipset doesn't work.
Do you have any samples from Samsung or Sandisk?

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Re: USB 3.0 eMMC Writer Module compatible eMMCs

Unread post by tentenberk » Wed May 15, 2019 12:02 am

We have a Sandisk Sample also but it does not work either.
Sandisk manufacturer part number is : SDINBDG4-16G-XA

Still the same issue initialization is done via CMD line but no further transactions are available.
By the way according to the schematics given in the odroid page I can say that only the first 4 bits of the S2 port of GL3224 is connected to the (GB042-34S-H10-E3000).
Is that a problem for not communicating in the HS200 mode?

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Re: USB 3.0 eMMC Writer Module compatible eMMCs

Unread post by odroid » Wed May 15, 2019 10:42 am

We tried only 4bit mode.

You made a different circuitry from our Writer.
So you have to ask your GL3224 design issue to Genesys Logic not Hardkernel.
We don't make the IC itself. ;)

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Re: USB 3.0 eMMC Writer Module compatible eMMCs

Unread post by tentenberk » Wed May 15, 2019 4:51 pm

No we haven't done any active circuitry.
We have just routed the pins that go into your emmc module (which are the signals on the (GB042-34S-H10-E3000)) to our Emmc Module.

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Re: USB 3.0 eMMC Writer Module compatible eMMCs

Unread post by odroid » Wed May 15, 2019 6:43 pm

What happened if you tested our original eMMC modules with your own writer?

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Re: USB 3.0 eMMC Writer Module compatible eMMCs

Unread post by tentenberk » Wed May 15, 2019 8:28 pm

We do not have any of your eMMC modules. I can get one and try but I am trying to learn whether your writer chooses eMMC to be compatible with.
If this selection of eMMC due to a specification, we would like to learn and analyze whether our eMMCs are compatible or not

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Re: USB 3.0 eMMC Writer Module compatible eMMCs

Unread post by odroid » Thu May 16, 2019 9:17 am

We didn't know that our eMMC writer has a compatible issue with your own eMMC module until you made your own device.
Does your eMMC module is a dead copy of our eMMC Rev 0.4?
https://wiki.odroid.com/accessory/emmc/reference_chart

Do you use it with XU4?

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Re: USB 3.0 eMMC Writer Module compatible eMMCs

Unread post by mad_ady » Thu May 16, 2019 1:10 pm


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