In my previous post I showed the process I used to solder the MPC5200 to the board. Of course, I couldn't wait to apply power to the board so I decided to build out the JTAG circuitry and give it a try.

Jon and I had previously decided that we would build the first board in sections, testing along the way. Prior to soldering the BGA, I had already built up the power section of the board and tested each power rail. So far, so good.

After soldering the BGA, I built up the JTAG connector and all of its supporting circuitry (pull up resistors, bypass capacitors, etc...). Jon had already figured out how to make UrJtag work on the Phytec. The idea was to get enough of the board working so I could use JTAG to toggle a pin on the MPC5200.

Short answer: It Worked!
Prototype VI drew it's first breath on March 30th, 2009.

Below is a picture of the prototype with a JTAG probe connected. Notice the two green lights near the top. Those lights indicate that the board has +30V and +12V. Also notice the scope probe on the pin near the bottom of the picture. That pin is IRQ0 of the MPC5200. Following Jon's instructions, I was able to get UrJtag to recognize the processor and then toggle the IRQ0 pin.