Datasheet
Electrical Specifications
82 Datasheet, Volume 1
Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. V
IL
is defined as the maximum voltage level at a receiving agent that will be interpreted as a logical low
value.
3. V
IH
is defined as the minimum voltage level at a receiving agent that will be interpreted as a logical high
value.
4. V
IH
and V
OH
may experience excursions above V
DDQ
. However, input signal drivers must comply with the
signal quality specifications.
5. This is the pull up/down driver resistance.
6. R
TERM
is the termination on the DIMM and in not controlled by the processor.
7. The minimum and maximum values for these signals are programmable by BIOS to one of the two sets.
8. DDR3 values are pre-silicon estimations and subject to change.
9. SM_DRAMPWROK must have a maximum of 15 ns rise or fall time over V
DDQ
* 0.55 ±200 mV and edge
must be monotonic.
Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. The V
CCIO
referred to in these specifications refers to instantaneous V
CCIO
.
3. For V
IN
between “0” V and V
CCIO
. Measured when the driver is tristated.
4. V
IH
and V
OH
may experience excursions above V
CCIO
. However, input signal drivers must comply with the
signal quality specifications.
R
ON_UP(CMD)
DDR3 command buffer pull-up
resistance
16 20 23 Ω 5
R
ON_DN(CMD)
DDR3 command buffer pull-
down resistance
16 20 24 Ω 5
R
ON_UP(CTL)
DDR3 control buffer pull-up
resistance
16 20 23 Ω 5
R
ON_DN(CTL)
DDR3 control buffer pull-down
resistance
16 20 24 Ω 5
V
IL_SM_DRAMP
WROK
Input Low Voltage for
SM_DRAMPWROK
——V
DDQ
*.55 – 0.1 V 9
V
IH_SM_DRAMP
WROK
Input High Voltage for
SM_DRAMPWROK
V
DDQ
*.55 +0.1 — V 9
I
LI
Input Leakage Current (DQ, CK)
0V
0.2*V
DDQ
0.8*V
DDQ
V
DDQ
——
± 0.75
± 0.55
± 0.9
± 1.4
mA
I
LI
Input Leakage Current (CMD,
CTL)
0V
0.2*V
DDQ
0.8*V
DDQ
V
DDQ
——
± 0.85
± 0.65
± 1.1
± 1.65
mA
Table 7-8. DDR3 Signal Group DC Specifications (Sheet 2 of 2)
Symbol Parameter Min Typ Max Units Notes
1,9
Table 7-9. Control Sideband and TAP Signal Group DC Specifications
Symbol Parameter Min Max Units Notes
1
V
IL
Input Low Voltage — V
CCIO
* 0.3 V 2
V
IH
Input High Voltage V
CCIO
* 0.7 — V 2, 4
V
OL
Output Low Voltage — V
CCIO
* 0.1 V 2
V
OH
Output High Voltage V
CCIO
* 0.9 — V 2, 4
R
ON
Buffer on Resistance 23 73
I
LI
Input Leakage Current — ±200 A3