Electrical Specifications
102 Datasheet, Volume 1
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.
.
Notes:
1. Refer to the PCI Express Base Specification for more details.
2. V
TX-AC-CM-PP
and V
TX-AC-CM-P
are defined in the PCI Express Base Specification. Measurement is made over
at least 10^
6
UI.
3. As measured with compliance test load. Defined as 2*|V
TXD+
– V
TXD-
|.
4. COMP resistance must be provided on the system board with 1% resistors. COMP resistors are to V
CCIO
.
5. PEG_ICOMPO, PEG_ICOMPI, PEG_RCOMPO are the same resistor. Intel allows using 24.9 1% resistors.
6. RMS value.
7. Measured at Rx pins into a pair of 50-terminations into ground. Common mode peak voltage is defined by
the expression: max{|(Vd+ - Vd-) – V-CMDC|}.
8. DC impedance limits are needed to ensure Receiver detect.
9. The Rx DC Common Mode Impedance must be present when the Receiver terminations are first enabled to
ensure that the Receiver Detect occurs properly. Compensation of this impedance can start immediately
and the 15 Rx Common Mode Impedance (constrained by RLRX-CM to 50 ±20%) must be within the
specified range by the time Detect is entered.
10. Low impedance defined during signaling. Parameter is captured for 5.0 GHz by RLTX-DIFF.
11. This specification is the same as V
RX-EYE
Table 7-12. 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, 5
V
IH
Input High Voltage V
CCIO
* 0.7 — V 2, 4, 5
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
Table 7-13. PCI Express DC Specifications
Symbol Parameter Min Typ Max Units Notes
1
V
TX-DIFF-p-p
Differential Peak-to-Peak Tx Voltage
Swing
0.4 0.5 0.6 V 3
V
TX_CM-AC-p
Tx AC Peak Common Mode Output
Voltage (Gen 1 Only)
0.8 1 1.2 mV 1, 2, 6
Z
TX-DIFF-DC
DC Differential Tx Impedance (Gen 1
Only)
80 — 120 1, 10
Z
RX-DC
DC Common Mode Rx Impedance 40 — 60 1, 8, 9
Z
RX-DIFF-DC
DC Differential Rx Impedance (Gen1
Only)
80 — 120 1
V
RX-DIFFp-p
Differential Rx Input Peak-to-Peak
Voltage (Gen 1 only)
0.175 — 1.2 V 1, 11
V
RX_CM-AC-p
Rx AC Peak Common Mode Input Voltage — — 150 mV 1, 7
PEG_ICOMPO Comp Resistance 24.75 25 25.25 4, 5
PEG_ICOMPI Comp Resistance 24.75 25 25.25 4, 5
PEG_RCOMPO Comp Resistance 24.75 25 25.25 4, 5
Intel
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