KSZ9567R datasheet(217/233 Pages) MICROCHIP

Teilenummer	KSZ9567R

Bauteilbeschribung	7-Port Gigabit Ethernet Switch with Audio Video Bridging and Two RGMII/MII/RMII Interfaces

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Hersteller	MICROCHIP [Microchip Technology]

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DS00002329E-page 217

KSZ9567R

6.5

Clock Specifications

A crystal or external clock source, such as an oscillator, is used to provide a 25MHz reference clock for the KSZ9567R.

If an external clock source is used, the XO pin must be left floating. Since the XI/XO circuit is powered from AVDDH,

the external clock source should also be powered from the same power rail. Figure 6-14 details the available connection

methods. Table 6-13 details the recommended crystal specifications.

FIGURE 6-14:

INPUT REFERENCE CLOCK CONNECTION OPTIONS

TABLE 6-13:

REFERENCE CRYSTAL CHARACTERISTICS

Characteristic

Min

Typ

Max

Units

Oscillation Mode

Fundamental

Frequency

MHz

Frequency tolerance

±50

ppm

Effective Series Resistance (ESR)

Total period jitter (peak-to-peak)

100

Drive level

100

25 MHz OSC

+/-50ppm

Connect

25 MHz XTAL

+/-50ppm

Ethernet Switch

KSZ9567R Datenblatt(PDF) 217 Page - Microchip Technology