Datasheet

Electrical Specifications
28 Intel® Xeon® Processor 3500 Series Datasheet Volume 1
4. V
IH
and V
OH
may experience excursions above V
DDQ
. However, input signal drivers must comply with the
signal quality specifications.
5. COMP resistance must be provided on the system board with 1% resistors. See the applicable platform
design guide for implementation details. DDR_COMP[2:0] resistors are to V
SS
.
Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. The V
TTA
referred to in these specifications refers to instantaneous V
TTA
.
3. For Vin between 0 V and V
TTA
. Measured when the driver is tristated.
4. V
IH
and V
OH
may experience excursions above V
TT
.
Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. The V
TTA
referred to in these specifications refers to instantaneous V
TTA
.
3. For Vin between 0 V and V
TTA
. Measured when the driver is tristated.
4. V
IH
and V
OH
may experience excursions above V
TT
.
Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. The V
TTA
referred to in these specifications refers to instantaneous V
TTA
.
3. For Vin between 0 V and V
TTA
. Measured when the driver is tristated.
4. V
IH
and V
OH
may experience excursions above V
TT
.
5. This spec applies to VCCPWRGOOD and VTTPWRGOOD
6. This specification applies to VDDPWRGOOD
Table 2-12. RESET# Signal DC Specifications
Symbol Parameter Min Typ Max Units Notes
1
V
IL
Input Low Voltage — — 0.40 * V
TTA
V2
V
IH
Input High Voltage 0.80 * V
TTA
—— 2,4
I
LI
Input Leakage Current — — ± 200 μA3
Table 2-13. TAP Signal Group DC Specifications
Symbol Parameter Min Typ Max Units Notes
1
V
IL
Input Low Voltage — — 0.40
*
V
TTA
V2
V
IH
Input High Voltage 0.75 * V
TTA
—— 2,4
V
OL
Output Low Voltage
——
V
TTA
* R
ON
/
(R
ON
+ R
sys_term
)
V2
V
OH
Output High Voltage V
TTA
——V2,4
Ron Buffer on Resistance 10 — 18 Ω
I
LI
Input Leakage Current — — ± 200 μA3
Table 2-14. PWRGOOD Signal Group DC Specifications
Symbol Parameter Min Typ Max Units Notes
1
V
IL
Input Low Voltage for VCCPWRGOOD
and VTTPWRGOOD Signals
— — 0.25 * V
TTA
V2,5
V
IL
Input Low Voltage for VDDPWRGOOD
Signal
— — 0.29 V 6
V
IH
Input High Voltage for VCCPWRGOOD
and VTTPWRGOOD Signals
0.75 * V
TTA
—— V 2,5
V
IH
Input High Voltage for VDDPWRGOOD
Signal
0.87
——
V5
Ron Buffer on Resistance 10 — 18 Ω
I
LI
Input Leakage Current — — ± 200 μA4