DM9010
Single Chip Ethernet Controller with General Processor Interface
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
using them in an application. The transformers listed
in Table 2 are electrical equivalents, but may not be
pin-to-pin equivalents.
Manufacturer
Pulse Engineering
Delta
Part Number
PE-68515, H1078, H1012, H1102
LF8200, LF8221x
YCL
20PMT04, 20PMT05, PH163112 , YCL 0303
PH163539 *(HP Auto-MDIX)
TG22-3506ND, TD22-3506G1,
TG22-S010ND, TG22-S012ND
TG110-S050N2
Halo
Nano Pulse Inc.
NPI 6181-37, NPI 6120-30, NPI 6120-37
NPI 6170-30
Fil-Mag
PT41715
Bel Fuse
Valor
S558-5999-01, S558-5999-W2
ST6114, ST6118
Macronics
Bothhand
HS2123, HS2213
TS6121C,16ST8515,16ST1086
Table 2
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.
Connects to pins X1 and X2, and shunts each crystal
lead to ground with a 22pf capacitor (see figure 11-6).
X1
22
X2
21
25MHz
22pf
22pf
AGND
AGND
Figure 11-6
Crystal Circuit Diagram
Preliminary
59
Version: DM9010-17--DS-P04
Jan. 18, 2006
DAVICOM [ DAVICOM SEMICONDUCTOR, INC. ]
