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Atmel JTAG MKII - Difference between HW Rev A and B (PDI Programming)

Started by Unknown September 20, 2009
Hi.

The programming interface changed from ISP to PDI on XMega controllers. 
The JTAG MKII can program and debug the XMegas via PDI with a software 
update, but only the newer hardware revisions seem to have the required 
hardware support.

I'm not very happy to discard my current hardware and spend 300� for 
another one.
So my question is: What are the hardware differences between the older 
(non-PDI) and the newer (PDI-enabled) revisions?

My guess is that pin 9 (TDI), which is used as PDI_DATA, is input only 
in the older revisions and bidirectional in the newer ones. So a new 
driver should do the trick.

SMD rework tools are available.

-- 
Mit freundlichen Gr��en

Frank-Christian Kr�gel
Frank-Christian Kr�gel skrev:
> Hi. > > The programming interface changed from ISP to PDI on XMega controllers. > The JTAG MKII can program and debug the XMegas via PDI with a software > update, but only the newer hardware revisions seem to have the required > hardware support. > > I'm not very happy to discard my current hardware and spend 300� for > another one. > So my question is: What are the hardware differences between the older > (non-PDI) and the newer (PDI-enabled) revisions? > > My guess is that pin 9 (TDI), which is used as PDI_DATA, is input only > in the older revisions and bidirectional in the newer ones. So a new > driver should do the trick. > > SMD rework tools are available. >
My guess is that it is a complete new board for the updated ICE. IIRC, The old H/W did not have enough performance to handle PDI. I think everything produced after Aug 2006 has the new board. You can check if you have a new ICE, but counting the LEDs. The old one has three, and the new one has a fourth, which is inside the plastic. You can still program & debug, using the JTAG interface. BR Ulf Samuelsson