Qphy-lpddr2 limit sets, Qphy-lpddr2 tests – Teledyne LeCroy QPHY-LPDDR2 User Manual
Page 38
![background image](/manuals/353676/38/background.png)
38
QPHY-LPDDR2-OM-G Rev B
QPHY-LPDDR2 LIMIT SETS
LPDDR2-466
This corresponds to the JEDEC JESD209-2D LPDDR2 standard specification limits for 466 MT/s.
LPDDR2-533
This corresponds to the JEDEC JESD209-2D LPDDR2 standard specification limits for 533 MT/s.
LPDDR2-667
This corresponds to the JEDEC JESD209-2D LPDDR2 standard specification limits for 667 MT/s.
LPDDR2-800
This corresponds to the JEDEC JESD209-2D LPDDR2 standard specification limits for 800 MT/s.
LPDDR2-933
This corresponds to the JEDEC JESD209-2D LPDDR2 standard specification limits for 933 MT/s.
LPDDR2-1066
This corresponds to the JEDEC JESD209-2D LPDDR2 standard specification limits for 1066 MT/s.
QPHY-LPDDR2 TESTS
Clock Tests
All time measure on clock CK are done at level VREF.
tCK(avg), Average Clock Period
tCK(avg) is defined as the average clock period over any 200 consecutive clock periods.
tCK(avg) = SUM(tCKi) / 200 where i=1 to 200
Measured on both the rising and the falling edge.
tCK(abs), Absolute Clock Period
tCK(abs) is defined as the absolute clock period of each of 200 consecutive clock periods.
Measured on both the rising and the falling edge.