How can I relate what I'm seeing in the data sheet for the trf3720 (IQ Modulator), that is,
N-Divider
Prescaler Div p/p+1
RF Divider
Sum Delta Control
Div 2/4/8
Vcm D/A
to the initialization code for the trf3720, that is,
LO_DIV
fVCO
PLL_DIV
NINT
NFRAC
PRSC
fN
I understand that some of these match up, but I'm looking for a methodology and an explicit, direct, mapping.
Is there any documentation on the methodology for the configuration of the trf3720, as shown in the fmc30rf_trf3720.cpp source file? I'm trying to understand the theory behind the derivation of the trf3720 configuration values. In other words, how do I take an LO_TX and know what to write to the trf3720 SPI registers.