hello everyone
I am trying to bypass VCO auto calibration in ADF4355-3 to achieve faster lock time. for this purpose I followed AN-1353 application note according to this application note the instruction for
ADF4355-3
1. Load R0 with AUTOCAL disabled (R0, DB21 = 0b0). This step is optional if AUTOCAL is already disabled.
2. Load R10 with VCO write set to VCO core and band (R10, DB[31:29] = 0b001).
3.Load R11 with VCO core and band, set as defined in Figure 7 and VCO bias code = 2 (normal operation). Note VCO core bits are different for read and write.
4.Load R10 with VCO write set to VCO bias code (R10, DB[31:29] = 0b011).
5. Lock to desired frequency by programming R2, R1, and R0 in that order.
I have confusion in step 3 about setting VCO core and band. can anyone explain what will be the value of VCO core and VCO band for register 11?
