Interfacing with e-MMC Storage Devices - Revision history

Resno: Text replacement - "gtvcom-20" to "exploiteers-20"

2016-02-07T01:22:39Z

Text replacement - "gtvcom-20" to "exploiteers-20"

← Older revision		Revision as of 01:22, 7 February 2016
Line 38:		Line 38:

	== Recommended MMC Readers ==		== Recommended MMC Readers ==
	We've had success with a number of MMC Adapters on the market but the one we have had the best success with is the following: [http://www.amazon.com/gp/product/B009D79VH4/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B009D79VH4&linkCode=as2&tag=~~gtvcom~~-20&linkId=TDW4GUEGPM45HP7L Transcend TS-RDF5K]		We've had success with a number of MMC Adapters on the market but the one we have had the best success with is the following: [http://www.amazon.com/gp/product/B009D79VH4/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B009D79VH4&linkCode=as2&tag=exploiteers-20&linkId=TDW4GUEGPM45HP7L Transcend TS-RDF5K]

Zenofex: /* Exploitee.rs e-MMC Adapter */

2014-12-31T09:54:40Z

Exploitee.rs e-MMC Adapter

← Older revision		Revision as of 09:54, 31 December 2014
Line 35:		Line 35:
	Exploitee.rs member [[Maximus64]] has created a board that is an SDCard breakout which converts the logic level of the CMD and DAT0 lines (for single bit communication mode) to that of the provided voltage level. For ease of use the board contains a jumper to configure a logic level of 1.8 or 2.5 but any voltage between 1.1 and 3.6 can be configured by providing that input to one a pin.		Exploitee.rs member [[Maximus64]] has created a board that is an SDCard breakout which converts the logic level of the CMD and DAT0 lines (for single bit communication mode) to that of the provided voltage level. For ease of use the board contains a jumper to configure a logic level of 1.8 or 2.5 but any voltage between 1.1 and 3.6 can be configured by providing that input to one a pin.

	Find out more info on the board at the follow page: [[Exploitee.rs e-MMC Adapter]]		Find out more info on the board at the follow page: [[Exploitee.rs Low Voltage e-MMC Adapter]]

	== Recommended MMC Readers ==		== Recommended MMC Readers ==
	We've had success with a number of MMC Adapters on the market but the one we have had the best success with is the following: [http://www.amazon.com/gp/product/B009D79VH4/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B009D79VH4&linkCode=as2&tag=gtvcom-20&linkId=TDW4GUEGPM45HP7L Transcend TS-RDF5K]		We've had success with a number of MMC Adapters on the market but the one we have had the best success with is the following: [http://www.amazon.com/gp/product/B009D79VH4/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B009D79VH4&linkCode=as2&tag=gtvcom-20&linkId=TDW4GUEGPM45HP7L Transcend TS-RDF5K]

Zenofex at 09:53, 31 December 2014

2014-12-31T09:53:41Z

← Older revision		Revision as of 09:53, 31 December 2014
Line 32:		Line 32:
	More information on modes can be found in the datasheet for the particular e-MMC device you are working with.		More information on modes can be found in the datasheet for the particular e-MMC device you are working with.

	== ~~GTVHacker~~ e-MMC Adapter ==		== Exploitee.rs e-MMC Adapter ==
	~~GTVHacker~~ member [[Maximus64]] has created a board that is an SDCard breakout which converts the logic level of the CMD and DAT0 lines (for single bit communication mode) to that of the provided voltage level. For ease of use the board contains a jumper to configure a logic level of 1.8 or 2.5 but any voltage between 1.1 and 3.6 can be configured by providing that input to one a pin.		Exploitee.rs member [[Maximus64]] has created a board that is an SDCard breakout which converts the logic level of the CMD and DAT0 lines (for single bit communication mode) to that of the provided voltage level. For ease of use the board contains a jumper to configure a logic level of 1.8 or 2.5 but any voltage between 1.1 and 3.6 can be configured by providing that input to one a pin.

	Find out more info on the board at the follow page: [[~~GTVHacker~~ e-MMC Adapter]]		Find out more info on the board at the follow page: [[Exploitee.rs e-MMC Adapter]]

	== Recommended MMC Readers ==		== Recommended MMC Readers ==
	We've had success with a number of MMC Adapters on the market but the one we have had the best success with is the following: [http://www.amazon.com/gp/product/B009D79VH4/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B009D79VH4&linkCode=as2&tag=gtvcom-20&linkId=TDW4GUEGPM45HP7L Transcend TS-RDF5K]		We've had success with a number of MMC Adapters on the market but the one we have had the best success with is the following: [http://www.amazon.com/gp/product/B009D79VH4/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B009D79VH4&linkCode=as2&tag=gtvcom-20&linkId=TDW4GUEGPM45HP7L Transcend TS-RDF5K]

Zenofex: Created page with "FORCETOC {{Disclaimer}} This page is dedicated to Interfacing with e-MMC Storage Devices. Most of the information is semi-generic and material should be confirmed with you..."

2014-11-29T07:55:15Z

Created page with "__FORCETOC__ {{Disclaimer}} This page is dedicated to Interfacing with e-MMC Storage Devices. Most of the information is semi-generic and material should be confirmed with you..."

New page

__FORCETOC__
{{Disclaimer}}
This page is dedicated to Interfacing with e-MMC Storage Devices. Most of the information is semi-generic and material should be confirmed with your particular setup by referencing the datasheet of your e-MMC device.
[[File:EMMC Chip Stock.jpg|200px|left|thumb]]
[[Category:eMMC]]

== e-MMC ==
'''e-MMC''' is a type of flash storage like [http://en.wikipedia.org/wiki/MultiMediaCard MMC] but mostly found in embedded devices. e-MMC is similar to NAND but contains an integrated controller which handles Bad Block Management, ECC, and Wear Leveling. It's use allows for the embedded device to offload all the above functionality to integrated hardware. e-MMC access can provide multiple modes of transfer including SD and SPI.

e-MMC devices also sometimes provides a feature known as "1-bit mode", this allows for the transfer of information utilizing only 1 data pin. This mode provides a slower transfer speed than utilizing other modes which require more data pins but allows for easier debugging. Therefore communicating with an eMMC device can be done with as little as 6 wires.

More information on e-MMC can be found on wikipedia at: [http://en.wikipedia.org/wiki/MultiMediaCard MMC]

== Interfacing With An e-MMC Storage Device==
Due to it's likeness to MMC and the it's ability to communicate in "SD" mode interfacing with an e-MMC device can be done with as little as 6 wires and an MMC adapter. The required points for any e-MMC setup (Not including data points) are:

* Vcc - IC power-supply pin
* Vccq - Output stage logic power voltage **
* CMD - Command Line
* CLK - Input Clock signal
* GND - Ground Point

<nowiki>** If VccQ is at any other voltage level than 3.3V logic, you will need a logic level conversion circuit to convert the signal for all data lines and clock from your SD reader to that of the e-MMC device.</nowiki>

== Data Lines ==
The number of data lines needed varies depending on the mode you are communicating in. The following are the generally available "modes".

* 8 bits - DAT0 - DAT7
* 4 bits - DAT0 - DAT3
* 1 bits - DAT0

More information on modes can be found in the datasheet for the particular e-MMC device you are working with.

== GTVHacker e-MMC Adapter ==
GTVHacker member [[Maximus64]] has created a board that is an SDCard breakout which converts the logic level of the CMD and DAT0 lines (for single bit communication mode) to that of the provided voltage level. For ease of use the board contains a jumper to configure a logic level of 1.8 or 2.5 but any voltage between 1.1 and 3.6 can be configured by providing that input to one a pin.

Find out more info on the board at the follow page: [[GTVHacker e-MMC Adapter]]

== Recommended MMC Readers ==
We've had success with a number of MMC Adapters on the market but the one we have had the best success with is the following: [http://www.amazon.com/gp/product/B009D79VH4/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B009D79VH4&linkCode=as2&tag=gtvcom-20&linkId=TDW4GUEGPM45HP7L Transcend TS-RDF5K]

Interfacing with e-MMC Storage Devices - Revision history

Resno: Text replacement - "gtvcom-20" to "exploiteers-20"

Zenofex: /* Exploitee.rs e-MMC Adapter */

Zenofex at 09:53, 31 December 2014

Zenofex: Created page with "__FORCETOC__ {{Disclaimer}} This page is dedicated to Interfacing with e-MMC Storage Devices. Most of the information is semi-generic and material should be confirmed with you..."

Zenofex: Created page with "FORCETOC {{Disclaimer}} This page is dedicated to Interfacing with e-MMC Storage Devices. Most of the information is semi-generic and material should be confirmed with you..."