EEVblog Electronics Community Forum

EEVblog => EEVblog Specific => Topic started by: firewalker on November 23, 2011, 09:00:52 am

Title: Amazon Kindle Fire Tablet Teardown - EEVblog #219
Post by: firewalker on November 23, 2011, 09:00:52 am
It seems like they wanted a removable sd card first?


(http://i.imgur.com/jlj2a.jpg)
Title: Re: Amazon Kindle Fire Tablet Teardown - EEVblog #219
Post by: EEVblog on November 23, 2011, 10:31:32 am
I thought that for a second, but that's not like any SD card socket I've seen.
3G module perhaps?

Dave.
Title: Re: Amazon Kindle Fire Tablet Teardown - EEVblog #219
Post by: timelessbeing on November 23, 2011, 11:25:22 am
Does the metallic tape simply shield what is directly beneath it, or does create a conductive link from the large shield to something else?  If it's the latter, how did you restore it?
Title: Re: Amazon Kindle Fire Tablet Teardown - EEVblog #219
Post by: amspire on November 23, 2011, 12:08:33 pm
I thought that for a second, but that's not like any SD card socket I've seen.
3G module perhaps?

Dave.
I suspect it is for a connector to an EEPROM emulator. I think the development time for the Fire was very tight, and I suspect the hardware had to be in production before the software was finished.

Flashing the eeprom to test the final unit can be slow, and if there are bugs, unreliable, so  it makes sense they test with a flash memory emulator.

Richard
Title: Re: Amazon Kindle Fire Tablet Teardown - EEVblog #219
Post by: codeboy2k on November 24, 2011, 05:29:44 pm
I thought that for a second, but that's not like any SD card socket I've seen.
3G module perhaps?

Dave.
I suspect it is for a connector to an EEPROM emulator. I think the development time for the Fire was very tight, and I suspect the hardware had to be in production before the software was finished.

Flashing the eeprom to test the final unit can be slow, and if there are bugs, unreliable, so  it makes sense they test with a flash memory emulator.

Richard

The flash could be a disk-on-chip device (a flash module with an IDE interface)  and the 40 pin connection
is for an external IDE hard drive only used during development, as Richard noted.