Hello all,

I'm straggling for the last week to make the following environment work:
- Segger J-Link
- Keils v 4.2.1.0.0
- Freescale K20

I've developed most of my code on an evaluation board (Tower K60 along with Ulink & Keil).
A Few days ago I got the first prototype product based on K20.
Ever since I've moved to the K20 the Ulink became useless, and the only way to debug was to switch to Segger's J-Link.
We could live with this but the Segger works only at 4 KHz speed, note that the Segger was working at a low (4 KHz) speed with the Tower K60 as well)
Here is the log from Keils MDK:

JLink info:
DLL: V4.28b, compiled Jun 22 2011 12:06:43
Firmware: J-Link ARM V8 compiled Sep 6 2011 16:33:14
Hardware: V8.00
S/N : 58005796

* JLink Info: TotalIRLen = 4, IRPrint = 0x01
* JLink Info: ARM AP[0]: 0x24770011, AHB-AP
* JLink Info: ARM AP[1]: 0x001C0000, JTAG-AP
***JLink Error: Bad JTAG communication: Write to IR: Expected 0x1, got 0x0 (TAP Command : 10) @ Off 0x5.
No APB-AP found.
Found SWD-DP with ID 0x2BA01477
Unlocking device...
* JLink Info: Found SWD-DP with ID 0x2BA01477
* JLink Info: TPIU fitted.
* JLink Info: ETM fitted.
* JLink Info: ETB present.
* JLink Info: CSTF present.
* JLink Info: FPUnit: 6 code (BP) slots and 2 literal slots
* JLink Info: Found Cortex-M4 r0p0, Little endian.
ROMTableAddr = 0xE00FF003
* JLink Info: Found SWD-DP with ID 0x2BA01477
* JLink Info: TPIU fitted.
* JLink Info: ETM fitted.
* JLink Info: ETB present.
* JLink Info: CSTF present.
* JLink Info: FPUnit: 6 code (BP) slots and 2 literal slots
* JLink Info: Found Cortex-M4 r0p0, Little endian.

Target info:
------------
Device: MK20N512VMD100
VTarget = 3.222V
State of Pins:
TCK: 0, TDI: 1, TDO: 0, TMS: 0, TRES: 1, TRST: 1
Hardware-Breakpoints: 6
Software-Breakpoints: 8192
Watchpoints: 4
JTAG speed: 4 kHz

Erase Done.
Programming Done.
* JLink Info: Found SWD-DP with ID 0x2BA01477
* JLink Info: TPIU fitted.
* JLink Info: ETM fitted.
* JLink Info: ETB present.
* JLink Info: CSTF present.
* JLink Info: FPUnit: 6 code (BP) slots and 2 literal slots
* JLink Info: Found Cortex-M4 r0p0, Little endian.
Application running ...