Teledyne-lecroy QPHY-LPDDR2 Manuel d'utilisateur télécharger 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.

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 49

Pas de commentaire

Teledyne-lecroy QPHY-LPDDR2 Manuel d'utilisateur Page 43