EP80579 Datasheet, PDF (1837/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
Table 49-14. DDR2 DC Output Characteristics (Sheet 2 of 2)
Signal
Group
Symbol
Parameter
Min
Nom
Max
Unit Notes
R_out
DDR_VREF
Output Impedance
DDR2 Reference Voltage
20.0
0.49 x
Vcc18
-
0.50 x
Vcc18
40.0
Ohms
1
0.51 x
Vcc18
V
1
VTTDDR
DDR_VTT
DDR2 Termination Voltage
DDR_VREF - 40
DDR_VREF
DDR_VREF +
40
mV
1
VCC18
DDR_VDD DDR2 Supply Voltage
1.71
1.80
1.89
V
1
Notes:
1.
Refer to the JESD-79-2 and SSTL-18 Specification for further details.
2.
DDR2 DC parameters are specified with a 43 ohm test load to Vdd/2 and with up to 22 ohm resistive compensation
(RCOMP). Guaranteed by design. These values are typical values seen for this process, but not measured during
production testing
3.
I _OH=0mA at V_OH of 0.99*V_CC; I _OL=0mA at V_OL of 0.01*V_CC
4.
For open drain outputs, I _OL, MIN=3mA
5.
Guaranteed by design.
6.
Slew rate measured from vil(ac) to vih(ac)
7.
The absolute value of the slew rate as measured from DC to DC is equal to or greater than the slew rate as measured
from AC to AC. Guaranteed by design. These values are typical values seen for this process, but not measured during
production testing
August 2009
Order Number: 320066-003US
Intel^® EP80579 Integrated Processor Product Line Datasheet
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