Hi to all,

At work I am working on a project that uses floating point co processor
witch is dsPIC30F3012 and it uses internal clock. I am working
on this project over a month now and I am having terrible time to make it work.
floating point co processor lets call it FPU. 
Since I do not see any external crystal it means it uses internal RC
maybe with PLL. My question is how fast SPI clock is possible to generate
using internal clock. At this moment fastest I was able to use to talk to
FPU was 24 us (microseconds). main schematic looks like this I am using
my own pic thru SPI is connected to FPU spi interface. As soon as I increase
the speed of SPI it quits working and one of our other engineer blames me
that it is my problem. I already know that dsPIC is using hardware SPI
as far as PLL I have no idea how it is setup in dsPIC.

any idea will appreciate.

Andre 

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