| R0[15] |
RAMP_EN |
R/W |
0 |
0: Disable frequency ramping mode
1: Enable frequency ramping mode |
| R0[14] |
VCO_PHASE_SYNC |
R/W |
0 |
0: Disable phase SYNC mode
1: Enable phase SYNC mode |
| R0[9] |
OUT_MUTE |
R/W |
0 |
Mute the outputs when the VCO is calibrating.
0: Disabled. If disabled, also be sure to enable OUT_FORCE
1: Enabled. If enabled, also be sure to disable OUT_FORCE
|
| R0[8:7] |
FCAL_HPFD_ADJ |
R/W |
|
Set this field in accordance to the phase-detector frequency for optimal VCO calibration.
0: fPD ≤ 100 MHz
1: 100 MHz < fPD ≤ 150 MHz
2: 150 MHz < fPD ≤ 200 MHz
3: fPD >200 MHz |
| R0[6:5] |
FCAL_LPFD_ADJ |
R/W |
0 |
Set this field in accordance to the phase detector frequency for optimal VCO calibration.
0: fPD ≥ 10 MHz
1: 10 MHz > fPD ≥ 5 MHz
2: 5 MHz > fPD ≥ 2.5 MHz
3: fPD < 2.5 MHz |
| R0[3] |
FCAL_EN |
R/W |
0 |
Enable the VCO frequency calibration. Also note that the action of programming this bit to a 1 activates the VCO calibration |
| R0[2] |
MUXOUT_LD_SEL |
R/W |
0 |
Selects the state of the function of the MUXout pin
0: Readback
1: Lock detect |
| R0[1] |
RESET |
R/W |
0 |
Resets and holds all state machines and registers to default value.
0: Normal operation
1: Reset |
| R0[0] |
POWERDOWN |
R/W |
0 |
Powers down entire device
0: Normal operation
1: Powered down |
| R1[2:0] |
CAL_CLK_DIV |
R/W |
3 |
Sets divider for VCO calibration state machine clock based on input frequency.
0: Divide by 1. Use for fOSC ≤ 200 MHz
1: Divide by 2. Use for fOSC ≤ 400 MHz
2: Divide by 4. Use for fOSC ≤ 800 MHz
3: Divide by 8. All fOSC
If user is not concerned with lock time, it is recommended to set this value to 3. By slowing down the VCO calibration, the best and most repeatable VCO phase noise can be attained |
| R7[14] |
OUT_FORCE |
R/W |
0 |
Works with OUT_MUTE in disabling outputs when VCO calibrating. |