Jan 09,  · 1 The jitter tolerance of an equipment. Remarks; 2 The tolerance function, a simulation of the tolerance curve. The limited range of the phase comparator; The pulse regeneration (= the eye corners and the steady state sampling offset); The limited frequency range of the VCO and the CDR slew-rate. Sinusoidal input and slew-rate; Slew-rate asymptotes .

Mar 14,  · the phase of the input signal varies too fast for the loop to track (slew-rate problem, that is investigated by simulations with sinusoidal input jitter close to the tolerance limit). Both causes can reduce the tolerance of the CDR, and the effects of each can be reduced at the expenses of other CDR .

Mar 05,  · Many non-linear factors may strongly influence how the acquisition evolves into tracking. For instance, the use of a bang-bang phase detector, the slew-rate consequence of the limited swing range of the VCO, the use of a PFD, each gives the acquisition transient special characteristics.. a linear phase comparator and input conditions that allow the other blocks to remain within their linearity.

Jan 09,  · Tol 2 instead is too small for a normal phase comparator. The larger tolerance in the second CDR (Tol 2 in the above figure) is obtained widening the range of its phase comparator: CDR2 tolerance at low frequencies (= below its cut-off frequency) is inferior to that of CDR1, but is in general more than adequate;.

Jan 09,  · As soon as the incoming signal is received (LOS = 0) and a phase mismatch is detected, the loop goes after it with the maximum speed.. The maximum (or minimum) speed ω max of e-9 rad/sec (or ω min of e-9 rad/sec) of the VCO correspond to the high (or to the low) output of the phase detector. (Remark: in this example the transition density is constant and equal to 50%.

A dual-loop CDR can be viewed as a simple phase-estimator. Different estimators can be built by changing the phase DAC control logic. Three different mum estimators for a 3Gb/s serial link are.

jitter frequency variation is negative and data rate becomes slower. In the interval b to c, the transmitter transmits a stream of zero, called “zero block” or “zero run”. There is no data transition, so CDR cannot modify the sampling phase. For this reason, phase detector or sampler in CDR .

This is a list of enchantments by slot showing permanent non-socket enchantments that can be applied from items/augments or by players with the enchanting profession. At this time, no enchantments are available for shirts, tabards, wands, thrown weapons. Contents[show] Armor Head All helm enchants (from any source) were removed with Mists of Pandaria. Neck Note: This is a generic section stub.