DM9010BI DAVICOM [Davicom Semiconductor, Inc.], DM9010BI Datasheet - Page 57
DM9010BI
Manufacturer Part Number
DM9010BI
Description
Industrial-temperature 10/100 Mbps Single Chip Ethernet Controller With General Processor Interface
Manufacturer
DAVICOM [Davicom Semiconductor, Inc.]
Datasheet
1.DM9010BI.pdf
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11.7 Magnetics Selection Guide
Refer to the following table for 10/100M magnetic
specification requirements. The magnetic which meet
these requirements are available from a variety of
magnetic manufacturers. Designers should test and
11.8 Crystal Selection Guide
A crystal can be used to generate the 25MHz
reference clock instead of an oscillator. The crystal
must be a fundamental type, and series-resonant.
Preliminary
Version: DM9010BI--DS-P01
January 12, 2010
Differential to common
Transformer isolation
Tx / RX turns ratio
mode rejection
Insertion loss
Parameter
Return loss
Inductance
Industrial-temperature Single Chip Ethernet Controller with General Processor Interface
AGND
Crystal Circuit Diagram
1:1 CT / 1:1
Values
X2
21
22pf
1500
350
-18
-14
-12
-40
-30
1.1
Figure 11-6
25MHz
22
X1
AGND
qualify all magnetic specifications before using them
in an application. Industrial-temperature range, RoHS
regulations, please contact with your magnetic
vendor, this table only for you reference,
Connects to pins X1 and X2, and shunts each crystal
lead to ground with a 22pf capacitor (see figure 11-6).
22pf
dB ( Max )
dB ( Min )
dB ( Min )
dB ( Min )
dB ( Min )
dB ( Min )
μH (Min)
Units
V
-
Test Condition
60 – 100 MHz
1 – 100 MHz
30 – 60 MHz
60 – 80 MHz
1 – 60 MHz
1 –30 MHz
DM9010BI
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-
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