Teledyne LeCroy QPHY-LPDDR2 - Manual (Page 35)

QPHY-LPDDR2 Software Option
QPHY-LPDDR2-OM-G Rev B
35
QPHY-LPDDR2 VARIABLES
General Variables
The following variables are used by all configurations. They can be used in conjunction with the test
selection and limit set selection to create custom configurations.
DUT Speed Grade in MT/s
Transfer speed of the DUT. Used to set the oscilloscope timebase and sampling rate, see Clock Period
Per Screen Division variable for more explanation. Choose between: 466, 533, 667, 800, 933 and 1066
MT/s. Default is 667 MT/s.
DQ Signal Name
Select name of data (DQ) SUT. Choose between available DDR signal names. Default is DQ0.
DQS Signal Name
Select name of strobe (DQS) SUT. Choose between available DDR signal names. Default is DQS0.
Clock Signal Name
Select name of clock (CK) SUT. Choose between available DDR signal names. Default is CK.
DUT Power Supply VDDQ
Value of VDDQ used to compute test limits as specified by Jedec standard. Default is 1.8 V.
Script Settings
Save Acquired Waveforms
Saved waveforms can be used later in demonstration or optimized version of script. Choose between Yes
or No. The default is No. This setting is ignored (no save) if using stored waveforms is enabled and in
Demo mode.
Silent mode control
No more interaction with the user when silent mode is on. Choose between Yes or No. Default is No. This
is useful to let the test run without interruption in the background.
Stop On Test to review results
When set to Yes, the script stops after each test allowing you to view the results. The setup is saved so
the oscilloscope settings can be modified by the user. On resume, the setup is recalled. Any new
acquisition done may cause the script to produce unexpected results.
Waveform Path
Specify the path on the oscilloscope to save/recall waveforms. When not in Demo Mode and when Save
acquired waveforms is enabled, the waveforms are saved in this folder. When set to Demo Mode or
when Use stored trace for pixel clock measure, waveforms are also available from this folder. The
default location is D:\Waveforms\LPDDR2.
Demo Settings
Use Stored Waveforms
When enabled, previously stored LPDDR2 waveforms is used. Default is No.
Recalled Waveform File Index (5 digits)
Enter the 5 digits number corresponding to the index of the file you want to recall. Default is 00000.