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Recording Options Setup
Write Recovery Time (nCK)
The Write Recovery Time can be selected from the dropdown menu.
Preamble (DDR4)
The Preamble value for Read commands can be set to 1 tCH or 2 tCK from the pull‐down
menu.
Fine Granularity (DDR4)
The Refresh mode can be adjusted from normal (1x) to more frequent 2X or 4X modes,
with shorter tRFC. The multiplier is selected from a pull‐down menu.
Self Refresh Abort (DDR4)
Self Refresh Abort can be enabled or disabled through the pull‐down menu
C/A Parity Latency Mode (nCK) (DDR4)
Command / Address Parity Latency Mode can be disabled or set to the required number
of clocks through the pull‐down menu.
CRC (DDR4)
CRC checking can be enabled or disabled through the pull‐down menu.
CAL (DDR4)
Command / Address Latency can be disabled or set to the required number of clocks through the
pull-down menu.
RTT_WR Per Rank
Check the boxes for each rank that uses Dynamic ODT (On‐Die Termination).
DLL Status per Rank (DDR3)
Enable or Disable DLL Status per Rank by clicking the checkbox. This selects which of tXP
or tXPDLL to use to check for Fast/Slow exit from Power Down, respectively. Select from 0
to 7. If Follow MRS Setting is enabled, these values will adjust as per the most recently
seen MRS command.
Note:
DDR4: If Follow MRS is enabled and CRC and DataMask are seen as enabled, then the WCL
parameter will be incorporated into the timing calculations for "tWTR", "tWTR_DBG", "tWTP",
"tWRA", "tWRPDEN", and "tWRAPDEN".
Active Ranks
There are eight Active Ranks. You can specify from 0 to 7. Ranks 0‐3 are for DIMM 1 in slot
1 and 4‐7 are for DIMM 2 in slot 2. Users should only select the actual active ranks of their
system. Selecting non‐existing ranks will result in incorrect violation detections.
Active Banks
DDR3
K ibra DDR Protocol Analyzer User Manual
T eledyne LeCroy
49
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