Hi,

I'd use 0A01 for 2.1GHs.

To chromsoma: Interesting, your PLL-Voltage is out of Specs and about 10% higher than mine. Maybe that's my problem...I'd guess
the to unknown ICs are VR for 5V -> 3.3V and one VR for PLL Voltage. Unfortunately I couldn't read the exact type and for the S1 boards bitmaint seems to have used other types.

Greetings,

            miniasic.