DM9000_09 DAVICOM [Davicom Semiconductor, Inc.], DM9000_09 Datasheet - Page 48

• Manufacturer Part Number: DM9000_09
• Description: ISA to Ethernet MAC Controller with Integrated 10/100 PHY
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

11.7 Magnetics Selection Guide
Refer to Table 2 for transformer requirements.
Transformers, meeting these requirements, are
available from a variety of magnetic manufacturers.
Designers should test and qualify all magnetics before
11.8 Crystal Selection Guide
A crystal can be used to generate the 25MHz
reference clock instead of a oscillator. The crystal
must be a fundamental type, and series-resonant.
Final
Version: DM9000-DS-F03
April 23, 2009
Manufacturer
Pulse Engineering
Delta
YCL
Halo
Nano Pulse Inc.
Fil-Mag
Bel Fuse
Valor
Macronics
AGND
Crystal Circuit Diagram
X2_25M
21
C18
22pf
Y1
ISA to Ethernet MAC Controller with Integrated 10/100 PHY
25M
Figure 11-6
22
Part Number
PE-68515, H1078, H1012
H1102
LF8200, LF8221x
20PMT04, 20PMT05
TG22-3506ND, TD22-3506G1,
TG22-S010ND
TG22-S012ND
NPI 6181-37, NPI 6120-30, NPI 6120-37
NPI 6170-30
PT41715
S558-5999-01
ST6114, ST6118
HS2123, HS2213
Table 2
X1_25M
AGND
using them in an application. The transformers listed
in Table 2 are electrical equivalents, but may not be
pin-to-pin equivalents.
Connects to X1_25M and X2_25M, and shunts each
crystal lead to ground with a 22pf capacitor (see figure
6).
C19
22pf
DM9000
48