GWIXC1100BDT datasheet(82/134 Pages) INTEL

82 / 134 page

Intel® IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor

March 2005

Datasheet

Document Number: 252479, Revision: 005

5.0

Electrical Specifications

5.1

Absolute Maximum Ratings

Warning:

Stressing the device beyond the “absolute maximum ratings” may cause permanent damage. These

are stress ratings only. Operation beyond the “operating conditions” is not recommended and

extended exposure beyond the “operating conditions” may affect device reliability.

5.2

VCCPLL1, VCCPLL2, VCCOSCP, VCCOSC Pin Requirements

To reduce voltage-supply noise on the analog sections of the Intel® IXP42X Product Line of

Network Processors and IXC1100 Control Plane Processor, the phase-lock loop circuits (VCCPLL1,

VCCPLL2) and oscillator circuit (VCCOSCP, VCCOSC) require isolated voltage supplies.

The filter circuits for each supply are shown in the following sections.

5.2.1

VCCPLL1 Requirement

A parallel combination of a 10-nF capacitor — for bypass — and a 200-nF capacitor — for a first-

order filter with a cut-off frequency below 30 MHz — must be connected to the VCCPLL1 pin of the

Intel® IXP42X product line and IXC1100 control plane processors.

The ground of both capacitors should be connected to the nearest VSS supply pin. Both capacitors

should be located less than 0.5 inch away from the VCCPLL1 pin and the associated VSS pin. In

order to achieve the 200-nF capacitance, a parallel combination of two 100-nF capacitors may be

used as long as the capacitors are placed directly beside each other.

Parameter

Maximum Rating

Ambient Air Temperature (Extended)

-40º C to 85º C

Ambient Air Temperature (Commercial)

0º C to 70º C

Supply Voltage Core

-0.3 V to 2.1V

Supply Voltage I/O

-0.3 V to 3.6V

Supply Voltage Oscillator (VCCOSC)

-0.3 V to 2.1V

Supply Voltage Oscillator (VCCOSCP)

-0.3 V to 3.6V

Supply Voltage PLL (VCCPLL1)

-0.3 V to 2.1V

Supply Voltage PLL (VCCPLL2)

-0.3 V to 2.1V

Voltage On Any I/O Ball

-0.3 V to 3.6V

Storage Temperature

-55o C to 125o C

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