Specifications

Functional Description
30-Dec-2010 CM-X300 Reference Guide Rev 1.31 23
3.3.4.1 Accessing DM9000A
The drivers for the Ethernet controller are provided in all SW support packages. The
following description is for system-level programmers only.
There are two addressing ports for accessing DM9000A through the host interface. One
port is the INDEX port and the other is the DATA port. In the CM-X300 the INDEX port is
at the address 2x08000010 and the DATA port is at the address 2x08000014. The contents
of the INDEX port are the register address of the DATA port. Before accessing any
register, the address of the register must be saved in the INDEX port.
3.3.4.2 Implementing Magnetics
Refer to Table 14 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 14 are
electrical equivalents, but may be not pin-to-pin compatible.
Table 14 Recommended Magnetic Modules
Manufacturer
Part Number
Pulse Engineering
PE-68515, H1078, H1012, H1102
Delta
LF8200, LF8221x
YCL
20PMT04, 20PMT05, PH163112 , YCL 0303, PH163539 *(Auto MDIX)
MAGCOM
HS9001 , HS9016
Halo
TG22-3506ND, TD22-3506G1, TG22-S010ND, TG22-S012ND, TG110-S050N2
Nano Pulse Inc.
NPI 6181-37, NPI 6120-30, NPI 6120-37, NPI 6170-30
Fil-Mag
PT41715
Bel Fuse
S558-5999-01, S558-5999-W2
Valor
ST6114, ST6118
Macronics
HS2123, HS2213
Bothhand
TS6121C,16ST8515,16ST1086
Figure 4 below shows an implementation example for use of a magnetic embedded in the
RJ-45 socket with integrated LEDs. Both center taps of the magnetic should be connected
to a 2.5V DC supply. Small LDO may be used for this purpose. Refer to Figure 5 for a
voltage source implementation example. Decouple 2.5V voltage with at least one large and
one small capacitors (10uF and 0.1uF respectively).