Teledyne LeCroy QPHY-LPDDR2 - Manual (Page 5)

QPHY-LPDDR2 Software Option
QPHY-LPDDR2-OM-G Rev B
5
Slew Rate .......................................................................................................................................................... 41
Logic Levels ................................................................................................................................................................... 41
VIH(ac), maximum AC input logic high ....................................................................................................................... 41
VIH(dc), minimum DC input logic high ....................................................................................................................... 42
VIL(ac), maximum AC input logic low ......................................................................................................................... 42
VIL(dc), minimum DC input logic low ......................................................................................................................... 42
VSWING(MAX), input signal maximum peak to peak swing ...................................................................................... 42
AC Over/Undershoot ...................................................................................................................................................... 42
AC Overshoot, Maximum peak amplitude .................................................................................................................. 42
AC Overshoot, Maximum overshoot area above VDDQ ............................................................................................ 42
AC Undershoot, Maximum peak amplitude ................................................................................................................ 43
Tests Requiring Single Ended Probing of Differential Signal ........................................... Error! Bookmark not defined.
Timing Tests ............................................................................................................................................................. 43
Read Bursts ...................................................................................................................................................... 43
tDQSQ, DQS-DQ Skew for DQS and Associated DQ Signals ....................................................................................... 43
tQHS, DQ hold skew factor ............................................................................................................................................ 44
tQH, DQ/DQS Output Hold Time From DQS.................................................................................................................. 44
tDQSCK, DQS Output Access Time from CK/CK # ....................................................................................................... 44
tHZ(DQ), DQ High Impedance Time From CK/CK# ....................................................................................................... 45
tLZ(DQ), DQ Low-Impedance Time from CK/CK# ......................................................................................................... 45
tLZ(DQS), DQS Low-Impedance Time from CK/CK# ..................................................................................................... 45
tRPRE, Read Preamble ................................................................................................................................................. 45
tRPST, Read Postamble ................................................................................................................................................ 45
Write Bursts ...................................................................................................................................................... 46
tDQSS, DQS latching rising transitions to associated CK edge ..................................................................................... 46
tDQSH, DQS Input High Pulse Width ............................................................................................................................. 46
tDQSL, DQS Input Low Pulse Width .............................................................................................................................. 46
tDSS, DQS Falling Edge to CK Setup Time ................................................................................................................... 47
tDSH, DQS Falling Edge Hold Time from CK ................................................................................................................ 47
tWPRE, Write Preamble ................................................................................................................................................. 47
tWPST, Write Postamble ............................................................................................................................................... 47
tDS(base), DQ and DM Input Setup Time ...................................................................................................................... 47
tDH(base), DQ and DM Input Hold Time ........................................................................................................................ 47
tIS(base) - Address and Control Input Setup Time ......................................................................................................... 48
tIH(base) - Address and Control Input Hold Time .......................................................................................................... 49
TABLE OF FIGURES
Figure 1. Data output (read) timing [JESD209-2D figure 23] .................................................................. 8
Figure 2. Burst read followed by burst write [JESD209-2D figure 32] ................................................... 8
Figure 3. Data input (write) timing [JESD209-2D figure 40] .................................................................... 9
Figure 4. Burst write: WL = 1, BL = 4 [JESD209-2D figure 41] ................................................................ 9
Figure 5. Burst write followed by burst read [JESD209-2D-2E figure 44] ........................................... 10
Figure 6. Report menu in QualiPHY General Setup ............................................................................... 11
Figure 7. The Test Report includes a summary table with links to the detailed test results ............. 12
Figure 8. QualiPHY main menu and compliance test Standard selection menu ................................ 15
Figure 9. QualiPHY configuration selection menu ................................................................................ 16
Figure 10. QualiPHY test item selection menu ....................................................................................... 18
Figure 11. Variable Setup and Limits Manager windows ...................................................................... 19
Figure 12. Start button .............................................................................................................................. 20
Figure 13. Example of pop-up connection diagram and dialog box .................................................... 20
Figure 14. PCF200 Deskew Fixture ......................................................................................................... 23
Figure 15. Differential probe properly connected to the fixture (Solder-In configuration) ............... 24
Figure 16. Accessing the probe calibration menu ................................................................................. 24