AnsweredAssumed Answered

Can't program 56F8166 "Core not responding".

Question asked by Alfredo Cabral on Apr 30, 2006
Latest reply on May 24, 2006 by Feng Wang
Hi, I've been trying to program a 56F8166, I'm using the circuit in the 56F8367EVM except for the first buffer that I replaced for a 74LCX244 (footprint issue =S), While trying to program with the codewarrior I can see every single JTAG line getting to the chip, but the DSP only answers by sending the time to low three times. right after I get the "Core not responding" error from codewarrior.
So Far I've verfified the following:
-Current consumption is around 140mA.
-The chip is oscillating at 8Mhz.
-Every VDDIO line has 3.3V
-Every ground is connected.
-OCRDIS is 3.3V and I have an external 2.5V regulator conected to the four VCAP pines with 2.2uF each.
-The PLL filter is in place(However this isnt required by the program so far).
If you guys have any ideas or had a similar problem please let me know,
Thank you.

Outcomes