9 May
2010
9 May
'10
11:16 a.m.
Hi all,
On Mon, Apr 19, 2010 at 07:21:40AM +0000, Wolfgang Spraul wrote:
- CECT C3100, ca 20 USD, MT6223CA, MT6139BN, RDA6212+
The standard set of 5 test points I seem to find on all MTK phones are PWRKEY, RX, TX, GND and VBAT. Beyond that test points are rare. The CECT C3100 had a few small ones right next to the CPU (but under a soldered shielding case). Might be something interesting but not sure yet.
I've used the PCB layers to trace the JTAG wires. They should be assigned as indicated in the picture at http://en.qi-hardware.com/wiki/File:C3100_testpads_jtag.png
The "RTCK" is a bit strange, it is the 'return jtag clock', i.e. you get back the clock that you send to TCK.
I haven't tested any of those yet, but maybe at some point during the next weeks...
Happy hacking, Harald
--
- Harald Welte laforge@gnumonks.org http://laforge.gnumonks.org/
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