Rod Whitby wrote: > Is there a test point on the GTA02 I can > look at to debug whether the PMU is powering up the device or not?
You could monitor nRESET. It rises to ~3.3V when the PMU thinks power is stable enough to allow the system to leave reset. In GTA02, if held upright, nRESET is on the rightmost test point above the debug connector, under the debug cable (if attached). I would recommend disconnecting the debug board when monitoring nRESET, as it may change the level of nRESET. You can see the test point assignment here: http://wiki.openmoko.org/wiki/Image:Gta02a5_pcba_ps.JPG The map under the LCM corresponds to the test points around the debug connector. This image shows how nRESET behaves: http://people.openmoko.org/werner/gta02-chg/gta02v3-good.png The noisy blue curve is nRESET, the yellow one is the SYS voltage. - Werner
