Rockbox Development > New Ports

Sandisk Sansa e200 v2

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skaos:
Photos of a disassembled e200 v2 is posted on an abi thread:
http://www.anythingbutipod.com/forum/showpost.php?p=186333&postcount=33

Bagder:
The e200 v2 series are new hardware, quite different from the original e200 series. Here's a pic of the v2 PCB:

http://img260.imageshack.us/img260/3448/img7133lc8.jpg

(linked from this abi post: http://www.anythingbutipod.com/forum/showpost.php?p=186333&postcount=18)

There are indications that the SoC is a Telechips one now, but nothing of that kind is really sure at this point.

linuxstb:
It should be possible to identify if it's a Telechips CPU by trying to put the device into "usb boot mode" (similar to "manufacturing mode" on the Portalplayer-based Sansas) and seeing what USB device IDs are presented.

If it's TCC77x based, then it should appear as 0x140e/0xb021, and if it's TCC7801, then it should be 0x140e/0xb011.

I've no idea how to put an E200v2 into usb boot mode - try turning the device off, then attaching to USB whilst pressing different button combinations.  The LCD won't display anything (so you may not notice it is on), but it should appear in your computer as a new USB device.

Obviously, a firmware upgrade file would also be very useful in identifying the hardware.

skaos:
I may have been wrong when I in another thread suggested that the c200v2 was Telechips based. This assumption was based on the same label (20-99-00112-2) on the SoC in the sansa m200 and c200v2, and from the RB wiki it was mentioned that the m200 was using Telechips.  It looks like there are several hardware versions of the m200 so Sandisk may have switched SoC's on the m200 as well.

Some photos of m200 versions:
v4.1: http://www.rockbox.org/twiki/pub/Main/SansaM200Port/m240back.jpg
v3.0: http://medlem.spray.se/trancentral/sansa1.jpg, http://medlem.spray.se/trancentral/sansa2.jpg

On the other hand, if the m200v4.1 and e200v2 uses the same SoC then there are some m200 firmware that someone may want to look at: http://files.zefie.com/PMP/sansa/m200/firmware/

Bagder:
Thanks a lot!

I got the SansaM200_plusA4_1_08 firmware version and had a look. It turned out slightly disturbing...

The firmware file is scrambled/encrypted (of course), but in the header there's plain text mentioning of "AS3525" and I find the coincidence a bit far too unlikely that it would be mentioned like that without being a reference to the AMS chip using that name:

http://www.austriamicrosystems.com/03products/products_detail/AS3525/description_AS3525.htm

So now my theory is that m200 v2, c200 v2 and e200 v2 all have AMS chips inside!

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