M393B1K73DH0 Datasheet, PDF (29/56 Pages) Samsung semiconductor – 240pin Registered DIMM

Registered DIMM
datasheet
Rev. 1.3
DDR3 SDRAM
14.4 Differential Output Slew Rate
With the reference load for timing measurements, output slew rate for falling and rising edges is defined and measured between V_OLdiff(AC) and V_OH-
diff^{(AC) for differential signals as shown in below.}
[ Table 12 ] Differential Output slew rate definition
Description
Measured
From
To
Differential output slew rate for rising edge
V_OLdiff(AC)
V_OHdiff(AC)
Differential output slew rate for falling edge
V_OHdiff(AC)
V_OLdiff(AC)
NOTE : Output slew rate is verified by design and characterization, and may not be subject to production test.
Defined by
V_OHdiff(AC)-V_OLdiff(AC)
Delta TRdiff
V_OHdiff(AC)-V_OLdiff(AC)
Delta TFdiff
[ Table 13 ] Differential Output slew rate
Parameter
Differential output slew rate
Symbol
SRQdiff
DDR3-800
Min Max
5
10
DDR3-1066
Min Max
5
10
Description : SR : Slew Rate
Q : Query Output (like in DQ, which stands for Data-in, Query-Output)
diff : Differential Signals
For Ron = RZQ/7 setting
DDR3-1333
Min Max
5
10
DDR3-1600
Min Max
5
10
DDR3-1866
Min Max
5
12
Units
V/ns
V_OHdiff(AC)
V_TT
V_OLdiff(AC)
delta TFdiff
delta TRdiff
Figure 7. Differential output slew rate definition
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