pin detection - GSM-Forum

benguetcowboy1 · 10-21-2010, 02:48

auto pin detection.....does this mean that riff box can detect jtag pinout for unknown models as long as cpu is supported??

benguetcowboy1 · 10-21-2010, 09:56

can it also detect correct jtag pin for unsupported cpu (i think its very important for future support)

jodge · 10-21-2010, 10:56

little tutorial about pin discover

CPU without glue:

- need to know the cpu pinout (factory pdf)
- remove the cpu
- discover the pin's with multimeter
- reball the cpu
- resolder the cpu

CPU with glue:

- phone with same family cpu (ex: msm 82xx) ad of course know pin's
- multimeter
- check the known pins and gnd via ohm meter (without power!)
- check the known pins and gnd via volt meter (with power!)

a little exaple:
the left side unknown pins value the right side is the know pins value

~Hero~ · 10-21-2010, 14:08

Good job bro......

bluegatar · 10-22-2010, 08:16

Quote:

Originally Posted by jodge

little tutorial about pin discover

CPU without glue:

- need to know the cpu pinout (factory pdf)
- remove the cpu
- discover the pin's with multimeter
- reball the cpu
- resolder the cpu

CPU with glue:

- phone with same family cpu (ex: msm 82xx) ad of course know pin's
- multimeter
- check the known pins and gnd via ohm meter (without power!)
- check the known pins and gnd via volt meter (with power!)

a little exaple:
the left side unknown pins value the right side is the know pins value

Why tdo not pin25 but pin23??

Pin 25 has same resistance with correct pin， has more less voltage difference（0.16v）than pin23（0.36v）.

Is there a standard to measure difference between these voltage or resistance data？？？？

jodge · 10-22-2010, 10:33

not the values count only but the position, the jtag pin's are near always to each other

barac_m · 10-22-2010, 12:49

Quote:

Originally Posted by jodge

not the values count only but the position, the jtag pin's are near always to each other

except hd2, htc smart.....

jodge · 10-22-2010, 14:47

and this is better then gambling hmmm?

like it

barac_m · 10-22-2010, 15:39

Quote:

Originally Posted by jodge

and this is better then gambling hmmm?

like it

I do not understand you....but did you try this method with riff, jtag pinout detection?

jodge · 10-22-2010, 16:09

yes i try same result. The riff solution is better bcose no need to short circuit the pcb before use the ohm meter. There are many capacitors on the pcb because of what we receive a bad result

tatoapf · 10-22-2010, 18:32

@jodge
I have a question for you. I was trying to unbrick 3 different phones with my Riff but I always get that there is a problem with the RTCK. I measured all the pins of the Riff and I got 0 volt from RTCK, TDO and 2 mores....
It's that normal or that indicate that my box it damaged.

Thank you for your help.

TaTo

jodge · 10-25-2010, 09:48

did the riff never work yet?
the first thing pls put into the trash your cable set, (read the sticky topic pls), the second you try to connect a working phone. the best choose for testing the samsung (only "connect and get ID" no need resurrection bcose the phone work, and follow the help). Third you MUST solder all wires. If not success pls contact your dealer

rf3ka · 05-06-2013, 11:09

does this ohm/voltage data work for msm8260 ?

Quote:

Originally Posted by jodge

little tutorial about pin discover

CPU without glue:

- need to know the cpu pinout (factory pdf)
- remove the cpu
- discover the pin's with multimeter
- reball the cpu
- resolder the cpu

CPU with glue:

- phone with same family cpu (ex: msm 82xx) ad of course know pin's
- multimeter
- check the known pins and gnd via ohm meter (without power!)
- check the known pins and gnd via volt meter (with power!)

a little exaple:
the left side unknown pins value the right side is the know pins value

rf3ka · 05-06-2013, 11:13

and, how about msm8255 also ?

BABAK NURI · 05-06-2013, 22:04

Quote:

Originally Posted by rf3ka

and, how about msm8255 also ?

Hi
What is your problem with MSM8255...because we have support many model with this CPU...
Do You Have any Not Supported Phone Model Base on MSM8255...?

10-21-2010, 02:48	#1 (permalink)
benguetcowboy1 No Life Poster Join Date: Feb 2004 Location: Baguio_City;Ph @ DrunkenMaster Age: 44 Posts: 1,916 Member: 51716 Status: Offline Sonork: 100.1594676 Thanks Meter: 217	pin detection auto pin detection.....does this mean that riff box can detect jtag pinout for unknown models as long as cpu is supported??

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10-21-2010, 09:56	#2 (permalink)
benguetcowboy1 No Life Poster Join Date: Feb 2004 Location: Baguio_City;Ph @ DrunkenMaster Age: 44 Posts: 1,916 Member: 51716 Status: Offline Sonork: 100.1594676 Thanks Meter: 217	can it also detect correct jtag pin for unsupported cpu (i think its very important for future support)

10-21-2010, 10:56	#3 (permalink)
jodge No Life Poster Join Date: Apr 2004 Posts: 753 Member: 61389 Status: Offline Thanks Meter: 193	little tutorial about pin discover CPU without glue: - need to know the cpu pinout (factory pdf) - remove the cpu - discover the pin's with multimeter - reball the cpu - resolder the cpu CPU with glue: - phone with same family cpu (ex: msm 82xx) ad of course know pin's - multimeter - check the known pins and gnd via ohm meter (without power!) - check the known pins and gnd via volt meter (with power!) a little exaple: the left side unknown pins value the right side is the know pins value

10-21-2010, 14:08	#4 (permalink)
~Hero~ Freak Poster Join Date: Sep 2010 Posts: 270 Member: 1391525 Status: Offline Thanks Meter: 47	Good job bro......

10-22-2010, 10:33	#6 (permalink)
jodge No Life Poster Join Date: Apr 2004 Posts: 753 Member: 61389 Status: Offline Thanks Meter: 193	not the values count only but the position, the jtag pin's are near always to each other

10-22-2010, 14:47	#8 (permalink)
jodge No Life Poster Join Date: Apr 2004 Posts: 753 Member: 61389 Status: Offline Thanks Meter: 193	and this is better then gambling hmmm? like it

10-22-2010, 16:09	#10 (permalink)
jodge No Life Poster Join Date: Apr 2004 Posts: 753 Member: 61389 Status: Offline Thanks Meter: 193	yes i try same result. The riff solution is better bcose no need to short circuit the pcb before use the ohm meter. There are many capacitors on the pcb because of what we receive a bad result

10-22-2010, 18:32	#11 (permalink)
tatoapf Freak Poster Join Date: Nov 2005 Location: Miami,FL Posts: 460 Member: 197641 Status: Offline Thanks Meter: 60	@jodge I have a question for you. I was trying to unbrick 3 different phones with my Riff but I always get that there is a problem with the RTCK. I measured all the pins of the Riff and I got 0 volt from RTCK, TDO and 2 mores.... It's that normal or that indicate that my box it damaged. Thank you for your help. TaTo

10-25-2010, 09:48	#12 (permalink)
jodge No Life Poster Join Date: Apr 2004 Posts: 753 Member: 61389 Status: Offline Thanks Meter: 193	did the riff never work yet? the first thing pls put into the trash your cable set, (read the sticky topic pls), the second you try to connect a working phone. the best choose for testing the samsung (only "connect and get ID" no need resurrection bcose the phone work, and follow the help). Third you MUST solder all wires. If not success pls contact your dealer

05-06-2013, 11:13	#14 (permalink)
rf3ka Junior Member Join Date: Jun 2012 Posts: 12 Member: 1777733 Status: Offline Thanks Meter: 0	and, how about msm8255 also ?