Topic : RlinkPro looses contact with STR9 if PLL Freq is set to High!

Forum : ARM

Original Post
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April 30, 2007 - 5:44pm
Guest

Hello Raisonance Support,
Every time I try to download new Flash Code on my in-house proto-board, where the PLL has been selected as the CPU Oscillator and the PLL frequency is high (96 MHz max limit). The RlinkPro looses contact with the CPU and RIDE jumps out of Debug Mode.

Notes:
1) I need to run at the 96 MHz high frequency in order to close the loop on my DSP Algorithms.
2) When you download code from the RlinkPro to the target, the code always runs before RIDE regains contact with the uC and Halts the processor for Debug Mode. => Not very effective Tool if RlinkPro can’t reestablish contact with the Debugger.
3) I need the lower Main Board Oscillator Frequency at 8M Hz, as it clocks my precision A/D Converter in parallel with the uC.
4) I’m able to reestablish uC contact by holding the STR9 Reset button low and then delete the FLASH.
5) I presently have the JTAG Interface speed set to 800KHz and have tried to raise it, but nothing works!
6) I know that the PLL setup values are within specified limits for 96MHz => N=192, M=8, and P=2.

Stuck need Help Fast as my boss has given me a deadline of early next week to show Proof of Concept - Thank you.

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May 2, 2007 - 11:22am
Raisonance Support Team

Hi,

Please have a look at this post and check if it's the same problem you're having...
http://www.raisonance.com/Forum/punbb/viewtopic.php?id=2162

Best Regards,

Vincent