pmtwiss
Junior Member level 2
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- May 28, 2008
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Hey guys,
Made a board of my own based off the Xpresso board setup from NXP. It uses the NXP LPC1769..and looks like eveyrthing is great except for my real time clock crystal, which I made the foorprint incorrectly
Main clock (Xtal) is ok...
trying to get the JTAG to boot using the programmer from the Xpresso board reference design..there is an external connector for their jtag on their board..
I got 10K pullups to 3.3V on all of the signals, but it's not finding the jtag.
- Chip is getting power...upon power-up...the +3.3V spikes to 450mA for a which sec and then off back to 100mA...seems normal
Any suggestions for thoughts?
Please check out my upload CPU schematic sheet and let me know what you think.
Thanks,
-Peter
Made a board of my own based off the Xpresso board setup from NXP. It uses the NXP LPC1769..and looks like eveyrthing is great except for my real time clock crystal, which I made the foorprint incorrectly
Main clock (Xtal) is ok...
trying to get the JTAG to boot using the programmer from the Xpresso board reference design..there is an external connector for their jtag on their board..
I got 10K pullups to 3.3V on all of the signals, but it's not finding the jtag.
- Chip is getting power...upon power-up...the +3.3V spikes to 450mA for a which sec and then off back to 100mA...seems normal
Any suggestions for thoughts?
Please check out my upload CPU schematic sheet and let me know what you think.
Thanks,
-Peter
