Tool/software:
{LD_EN (R0[13] = 1)}이 제대로 작동하지 않는 것 같습니다.
MUXout(20핀) 출력은 0V로 측정됩니다.
500MHZ로 설정했는데 실제로는 430MHZ로 출력됩니다
Hi there,
Is it locked? I think it did not lock.
Configuration file is fine, there are couple of issues with the schematic.
1. Is the OSCin signal meets datasheet requirement? What is the output format of the XO? If it is CMOS output, you should put a capacitor before the 50Ω resistor.
2. Your loop filter is same as EVM. However, your configuration file has fpd = 50MHz. The loop filter in EVM is design to work with fpd=100MHz. If you change the fpd to 50MHz, the loop becomes not stable.
EVM default configuration, loop BW = 23.5kHz, phase margin = 37.6degree
with fpd =50MHz, loop BW = 15.2kHz, phase margin = 28.4degree (below 30degree is not very likely not stable)
3. looks like you do not use RFoutB, you can simply leave the pins floating, no need to bias them and shunt them to ground.
