S8000 jtag pinouts

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ShadowmanX

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Hi all,
Please share somebody samsung GT-S8000 jtag pinouts.. I have found nTRST , RTCK, GND, VREF, TDO, but I can't find other pinouts because S3C6410 CPU has two modes: "JTAG peripherals" and "JTAG ARM1176" and I don't know how to switch CPU PIN "XJDBGSEL" in to state "1" to connect in arm core mode...
maybe some1 has original JTAG adpter from samsung - highres photos of this tool can help also..

I can exchange other models jtag pinouts which i have discovered.. F480, U900, I900 phone and pda...

Br
Shadowman
 
We are here to help each other and share what i know
About access to crypted SM, contact me on sonork: 100.66876
 
I recently have found some source that suggests that S3C6410 and MSM6246 share a single (dual ported) RAM and flash. Samsung calls this OneNAND and OneDRAM. The part number is KAC00F008M-AE77. It is said to have 2x128MB RAM and 256MB NAND flash. I have no idea if the numbers are right and how it is partitioned as no Datasheet is available.

RAM and flash are integrated into the S3C6410 chip package. Thus I would not be surprised if it is possible to completely program it via the S3C6410 JTAG port. Flashing the I8000 firmware might however be difficult as the I8000 is said to have more RAM and flash. The part number here is KBZ00900PM-A439. Besides this difference the I8000 modem/baseband is different and many more parts are very likely to differ. Thus I don't think it will be possible to flash the I8000 firmware to S8000.

Cheers,

Dopi
 
Hi,
can anyone help me with some question regarding the keypad connections inside S8000? I am looking for the exact connections of the key/buttons to the keypad row/column lines of the S3C6410 application processor. As it is only 9 keys in total and the power key is most probably connected to the Maxim PMU I assumed the remaining 8 keys are just connected to the keypad ROW_IN lines (GPIOK/GPION) and GND (without any connection to a keypad column output line). But like this I could not detect any keypress.

I am asking because I am working on a modified bootloader that supports dual booting Samsung OS and another OS (e.g. Android/WinMo from SD-card). This leaves the option of starting another OS and downloading a new bootloader via USB.

I have successfully tested a bootloader with a simple modification (wait loop). The next step is detecting a keypress and executing a second step bootloader to boot from SD card. Unfortunatly a simple read from the keypad register does not do what I expected. So maybe there is something in the schematic connected different that I expected.

I hope someone can help me finding out the right details to make this work.

Cheers,

Dopi
 
Hi ShadowmanX,
did you succeed in finding out the JTAG pinout of S8000? I tried to figure it out by myself but did not get much further than locating possible connection pads on the PCB near the USB connector. (see images http://www.flickr.com/photos/44723902@N02/4112626906/ , http://www.flickr.com/photos/44723902@N02/4111853123 ).
Cheers,
Dopi
 
No, I don't think so. I am sure you can flash anything to the S8000 ROM using the JTAG port. Maybe even the I8000 firmware (if it fits ). But I don't think it will work. The hardware is different. I8000 has different (more?) RAM/flash (KBZ00900PM vs. KAC00F008M), different modem (MSM6246 vs. MSM6290) most likely a different power management, different wifi chipset ...

However I think a different OS (Android, maybe WM) can run on the S8000 hardware. But this will only work if the system is compiled for S8000.

Cheers,
Dopi
 
I'am not sure but I think they haven't JTAG connector for S8000, only like this one :



if this can help you,

anny one can help for reviver one S8000 have in my hand pls ?

Best Regards,
JAVA Good.
 
Good contribution

I900 is been taken from Omnia Repair Tool - Support Area
I am preparing more pinouts and will be released in following days..


Best Regards
www.omnia-repair.com
 
No, I think this is wrong. Firstly what was said before is about S8000 not I8000. Secondly, the pin-numbering is not in a counter-clockwise fashion like in your picture. It is like below:

-------------------
| 2 | 4 | 6 | 8 | 10 |
-------------------
> | 1 | 3 | 5 | 7 | 9 |
-------------------

You can see from the picture that the tow pins on the right end (Pin 9+10) are both ground.
 
maybe ORT team can reply if they have some think like that or best from this,

Best Regards,
JAVA Good.
 
You can get these connectors e.g. at Digikey. Part #255-2406-1-ND should be the one to be soldered to the PCB. You can find the mating conncetors on the Digikey product page if you need it.

If you need another source you should search for AXT-610124 as that this the manufacturer (Panasonic Electric Works) part number.

Cheers,

Dopi
 
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