EP80579 Datasheet, PDF (1838/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
49.5.2.3 DDR2 AC Characteristics
Table 49-15. DDR2 Differential Input/Output AC Levels
Signal
Group
Symbol
Parameter
Min
Max
Unit Notes
V_{IL (AC)}
Input Low Voltage (AC)
DDR_VREF
-
– 200
mV
1, 2
DDR2
V_{IH (AC)}
Input High Voltage (AC)
DDR_VREF +
200
-
SSTL I/O
V_ID
AC Differential Input
Voltage
400
-
mV
1, 2
mV
V_IX
Differential cross point
input voltage
DDR_VREF -
100
DDR_VREF
+ 100
mV
1, 3
Notes:
1.
Refer to the JESD-79-2 and SSTL-18 Specification for further details.
2.
These input voltages apply only when the signals are inputs to the EP80579. When the signals are
inputs to the SDRAM, the SDRAM input voltage specifications apply.
3.
Guaranteed by design. These values are typical values seen for this process, but not measured
during production testing
Intel^® EP80579 Integrated Processor Product Line Datasheet
1838
August 2009
Order Number: 320066-003US