The full datasheet for the CPU is here but I could not find any reference to the current drawn on each supply only a example of the total power when running at 400Mhz with all peripheral clocks active. From this I would assume the supplies are in the mA range. I’d do what iggmoe suggests and use the same IC’s or something with similar specs.
Reverse engineering the FB inputs of the voltage regulators gave me 1 volt for the VDDCORE and 1.8 for the VDDIOM supplies.
The Raptor schematic has been very helpful. It would still help to have more specific data on the G400-S itself, like a datasheet. Custom projects seldom require the level of robustness of a demo board like the Raptor. For instance, the switch mode power supplies, along with all the requisite inductors and capacitors, could easily be replaced with simpler LDO regulators for cost and space savings if one could ensure the current demand would be met. Tolerances and leakage currents would allow for better worst case analysis on the final product. Etc…
Dave, I didn’t see your post until after I posted. I got the same values, but it’s always good to get verification!
As to the Atmel reference, can I assume that pretty much all the interfaces are straight pad-to-micro with no additional circuitry changing things? It would be good to be able to use the Atmel datasheet.
I’m really excited to use this device! I do a good bit of embedded prototyping work on test fixtures and load simulators for much more involved ECUs, and I’m hoping the G400 can drastically improve design and software development time, while increasing capability.
Dave, I saw you were doing some projects like this. Were there any pitfalls you ran into that you could share?