Samsung M471B1G73AH0 Differential Output Slew Rate, Differential output slew rate for rising edge

Unbuffered SODIMM

datasheet

Rev. 1.0

DDR3 SDRAM

11.4 Differential Output Slew Rate

With the reference load for timing measurements, output slew rate for falling and rising edges is defined and measured between VOLdiff(AC) and VOH- diff(AC) for differential signals as shown in below.

[ Table 11 ] Differential Output slew rate definition

Description	Measured		Defined by
	From	To
Differential output slew rate for rising edge	VOLdiff(AC)	VOHdiff(AC)	VOHdiff(AC)-VOLdiff(AC)
			Delta TRdiff
Differential output slew rate for falling edge	VOHdiff(AC)	VOLdiff(AC)	VOHdiff(AC)-VOLdiff(AC)
			Delta TFdiff

NOTE : Output slew rate is verified by design and characterization, and may not be subject to production test.

[ Table 12 ] Differential Output slew rate

Parameter	Symbol	DDR3-800		DDR3-1066		DDR3-1333		DDR3-1600		Units
		Min	Max	Min	Max	Min	Max	Min	Max
Differential output slew rate	SRQdiff	5	10	5	10	5	10	5	10	V/ns

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

VOHdiff(AC)

VTT

VOLdiff(AC)

delta TFdiff delta TRdiff

Figure 7. Differential output slew rate definition

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