Download datasheet for M378B5273CH0 by Samsung Electronics

Unbuffered DIMM

Rev. 1.2

DDR3 SDRAM

13.4 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

OHdiff

(AC) for differential signals as shown in below.

[ Table 12 ] Differential Output slew rate definition

Description

Differential output slew rate for rising edge

From

Measured

To

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 Symbol

DDR3-800

Min Max

5 10 Differential output slew rate SRQdiff

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

DDR3-1066

Min Max

5 10

DDR3-1333

Min Max

5 10

DDR3-1600

Min Max

5 10

Units

V/ns

V

OHdiff

(AC)

V

TT

V

OLdiff

(AC) delta TFdiff delta TRdiff

Figure 8. Differential output slew rate definition

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