參數(shù)資料
型號: DM9102D
廠商: Electronic Theatre Controls, Inc.
英文描述: SINGLE CHIP FAST ETHEMET NIC CONTROLLER
中文描述: 單晶片快速以太網(wǎng)NIC控制器
文件頁數(shù): 68/70頁
文件大?。?/td> 2245K
代理商: DM9102D
68
Preliminary datasheet
Version: DM9102D-DS-P02
Jan. 14, 2005
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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