IXP45X datasheet(106/148 Pages) INTEL

номер детали	IXP45X

подробное описание детали	Product Line of Network Processors

PDF	148 Pages

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производитель	INTEL [Intel Corporation]

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Intel® IXP45X and Intel® IXP46X Product Line of Network Processors—Datasheet

Intel® IXP45X and Intel® IXP46X Product Line of Network Processors

Datasheet

August 2006

106

Document Number: 306261-004US

5.2.5

OSC_VCC 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 33 MHz) must be connected to both of

the OSC_VCC pins of the IXP45X/IXP46X network processors.

The grounds of both capacitors should be connected to the OSC_VSS supply pin. Both

capacitors should be located less than 0.5 inch away from the OSC_VCC pin and the

associated OSC_VSS pin.

In order to achieve a 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.

5.3

RCOMP Pin Requirements

Figure 14 shows the requirements for the RCOMP pin.

Figure 12.

OSC_VCCP Power Filtering Diagram

V ccp

170 nF

V SS

O S C_ V C CP

In t e l ®

I X P 45X / I X P 46X

Ne t w o r k

P r oc es s o r s

O S C _ VSS P

Figure 13.

OSC_VCC Power Filtering Diagram

Vc c

10 nF

V SS

100 nF

OS C _ V C C

In te l®

IX P 4 5 X /IX P 4 6 X

Ne tw o rk

P roc es s o rs

O S C _ VSS

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