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6
Differential Signals AC Input Parameters Tests
V
, AC Differential Input Cross Point Voltage -Test Method of Implementation
IX(AC)
The purpose of this test is to verify the crossing point of the input differential test signals pair is
within the conformance limits of the V
The default value of V
value.
Table 30
Speed
V
Figure 26
Figure 27
78
is as shown in
DDQ
The defaul t value of V
DDQ
DDR 200, 266, 333
2.50 V
DDQ
V
AC Differential Input Voltage
IX
V
in Infiniium oscilloscope
IX(AC)
as specified in the JEDEC Standard JESD79E.
IX(AC)
Table
30. However, users have the flexibility to change this
DDR 400
2.60 V
.
DDR1 Compliance Testing Methods of Implementation
Low Power
1.80 V
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