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DM9102DEP 데이터시트(PDF) 68 Page - Davicom Semiconductor, Inc.

부품명 DM9102DEP
상세설명  Single Chip Fast Ethernet NIC Controller
PDF  70 Pages
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제조업체  DAVICOM [Davicom Semiconductor, Inc.]
홈페이지  http://www.davicom.com.tw
Logo DAVICOM - Davicom Semiconductor, Inc.

DM9102DEP 데이터시트(HTML) 68 Page - Davicom Semiconductor, Inc.

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Final
Version: DM9102D-DS-F01
May 10, 2006
9.8 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,
series-resonant, connected to X1 and X2, and
shunt to ground with 22pF capacitors. (See Table
9-3 and Figure 9-66.)
PARAMETER
SPEC
Type
Fundamental, series-resonant
Frequency
25 MHz +/-0.005%
Equivalent Series Resistance
25 ohms max
Load Capacitance
22 pF typ.
Case Capacitance
7 pF max.
Power Dissipation
1mW max.
Table 9-3: Crystal Specifications
97
98
X1
X2
AGND
AGND
22pf
25MHz
22pf
Figure 9-6
Crystal Circuit Diagram



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