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Electrical Specifications

Datasheet

Table 9. AGTL+ Signal Group DC Specifications

Symbol

Parameter

Min

Typ

Max

Unit

Notes1

VCCP

I/O Voltage

1.00

1.05

1.10

GTLREF

GTL Reference Voltage

—

2/3 VCCP

—

RCOMP

Compensation Resistor

27.23

27.5

27.78

RODT

Termination Resistor

—

VIH

Input High Voltage

GTLREF+0.10

VCCP

VCCP+0.10

3,6

VIL

Input Low Voltage

-0.10

GTLREF–0.10

2,4

VOH

Output High Voltage

VCCP–0.10

VCCP

Termination Resistance

46 [SS]

46 [CC]

61 [SS]

64 [CC]

7, 12

RON (GTL

mode)

GTL Buffer on Resistance

ILI

Input Leakage Current

—

±100

µA

Cpad

Pad Capacitance

1.8

2.1

2.75

NOTES:

Unless otherwise noted, all specifications in this table apply to all processor frequencies.

VIL is defined as the maximum voltage level at a receiving agent that will be interpreted as a logical low

value.

VIH is defined as the minimum voltage level at a receiving agent that will be interpreted as a logical high

value.

VIH and VOH may experience excursions above VCCP. However, input signal drivers must comply with the

signal quality specifications.

This is the pull-down driver resistance.

GTLREF should be generated from VCCP with a 1% tolerance resistor divider.

RTT is the on-die termination resistance measured at VOL of the AGTL+ output driver.

Specified with on-die RTT and RON are turned off.

Cpad includes die capacitance only. No package parasitics are included.

10.

There are external resistor on the comp0 and comp2 pins.

11.

On-die termination resistance, measured at 0.33*VCCP.

12.

SS: source synchronous pins such as quad-pumped data bus and double-pumped address bus which

require a clock strobe. CC: Common clock pins.

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