Teledyne LeCroy QPHY-DDR3 - Manual (Page 43)

QPHY-DDR3 Software Option
917717 Rev C
43
Figure 21: tIS illustration (Figure 111 from JESD79-3E)
Setup (tIS) nominal slew rate for a rising signal is defined as the slew rate between the last crossing of
VREF(dc) and the first crossing of VIH(ac)min. Setup (tIS) nominal slew rate for a falling signal is defined
as the slew rate between the last crossing of VREF(dc) and the first crossing of VIL(ac)max.
Jedec JESD79-2E Specific Note 9 (page 95 to 100) with tables 46 and 47 explain the limit compensation
versus the slewrate of the measured signals. Timing limits are initially specified for input slewrate of 1V/ns
for single-ended signals and 2V/ns for differential signal (for DQS and CK).
tIPW, Control and Address Input pulse width for each input
Pulse width of a input signal is defined as the width between the first crossing of Vref(dc)
and the consecutive crossing of Vref(dc).