SNAS736C June 2017 – April 2019 LMX2595
Manual pin ramping is enabled by setting RAMP_EN = 1 and RAMP_MANUAL = 1. The rising edges are applied to the RampClk pin are reclocked to the phase detector frequency. The RampDir pin controls the size of the change. If a rising edge is seen on the RampClk pin while the VCO is calibrating, then this rising edge is ignored. The frequency for the RampClk must be limited to a frequency of 250 kHz or less, and the rising edge of the RampDir signal must be targeted away from the rising edges of the RampCLK pin.
|RampDir PIN||STEP SIZE|