Teledyne-lecroy QPHY-LPDDR2 User Manual download pdf (Page 43)

QPHY-LPDDR2 Software Option

QPHY-LPDDR2-OM-G Rev B

AC Undershoot, Maximum peak amplitude

Maximum peak amplitude allowed for undershoot area.

Figure 22. Differential signal levels [JESD209-2D figure 115]

VIX

Figure 23. VIX Definition [JESD209-2D figure 111]

Timing Tests

Read Bursts

tDQSQ, DQS-DQ Skew for DQS and Associated DQ Signals

Maximum skew between the DQS line and the associated DQ line within a read burst

Measure timing from DQS at VREF to DQ rising at VIH(ac)min and falling at VIL(ac)max.

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Teledyne-lecroy QPHY-LPDDR2 User Manual Page 43