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Crystal Requirements — Intel® 82575EB Gigabit Ethernet Controller

317679-004

Intel® 82575EB Gigabit Ethernet Controller

Revision: 2.11

Datasheet

January 2011

7.0

Crystal Requirements

Table 20.

Reference Crystal Specification Requirements

Parameter Name

Symbol

Recommended Value

Conditions

Frequency

25.000 [MHz]

@25 [°C]

Vibration mode

Fundamental

Cut

Operating /Calibration Mode

Parallel

Frequency Tolerance @25°C

f/f

o @25°C

±30 [ppm]

@25 [°C]

Temperature Tolerance

f/f

±30 [ppm]

Operating Temperature

Topr

-20 to +70 [°C]

Non Operating Temperature Range

Topr

-40 to +90 [°C]

Equivalent Series Resistance (ESR)

50 [Ù] maximum

@25 [MHz]

Load Capacitance

Cload

20 [pF] (max 24pF)

Shunt Capacitance

6 [pF] maximum

Pullability from Nominal Load Capacitance

f/C

load

15 [ppm/pF] maximum

Max Drive Level

0.5 [

mW]

Insulation Resistance

500 [M

] minimum

@ 100V DC

Aging

f/f

±5 [ppm/year[

Differential board capacitance*

2 [pF]

Board Capacitance

4 [pF]

External Capacitors

C1, C2

27 [pF]

Board Resistance

0.1 [

]

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