CS8900A-IQ 查看數據表（PDF） - Cirrus Logic

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CS8900A-IQ

Crystal LAN™ Ethernet Controller

Cirrus Logic 

CS8900A

Crystal LAN™ Ethernet Controller

3.13 External Clock Oscillator

A 20-MHz quartz crystal or CMOS clock input

is required by the CS8900A. If a CMOS clock

input is used, it should be connected the to

XTAL1 pin, with the XTAL2 pin left open. The

clock signal should be 20 MHz ±0.01% with a

duty cycle between 40% and 60%. The speci-

fications for the crystal are described in

Section 7.7 on page 122.

CIRRUS LOGIC PRODUCT DATASHEET

40

DS271F4

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