G400 Clocking

NETMF & Gadgeteer
1

After some experimentation we have reason to believe that our Raptor board is jamming the GPS receiver that we are using. Not GHI’s problem but we’re trying to figure how best to ground, shield or beg for divine intervention.

In order to do some analysis of our EMC problem, may I know the frequency of the external XTAL, the DDR clock and the internal processor clock on G400 SOM module?

Thanks,
Wayne

“There are two kinds of engineers — those who have signal integrity problems, and those who will.” - Eric Bogatin

2

I have had similar experiences on the G120. I found that changing the clock frequency didn’t make too much difference.

Is your eventual plan to make your own PCB?

3

133mhz for ddr and 12mhz Crystal, iirc.