22
3 Connection of the module with the external world
Connection to the Ethernet network
Connection of the module to the Ethernet can be realized in two ways: through a separating transformer (e.g.
20F001N from YCL) and the RJ45 socket or by using the socket integrated with the transformer (e.g.
LF1S022 of Bothhand Company). The second solution guarantees small dimensions and a reduction of the
element count; the first solution, however, apart from somewhat lower cost, permits the use of Power-Over-
Ethernet technology and powering the module through the Ethernet cable.
Examples of both solutions are shown in the drawings below.
LAN_GND
AC2
AC1
GND
LA
N
LAN_GND
TX+
1
TX-
2
RX+
3
4
5
RX-
6
7
8
SH1
SH2
RJ45
10n
100n
10n/2kV
LAN_GND
GND
TPIN+
TPOUT+
TPIN-
TPOUT-
9
10
11
12
13
14
15
16
8
7
6
3
2
1
5
4
R
C
V
X
M
IT
TG110-S050N2
+3.3V
75R
75R
Figure 13
Connection to the Ethernet using a transformer.
TPIN+
TPOUT+
TPIN-
TPOUT-
LAN_GND
100n
100n
GND
7
6
5
4
8
3
2
1
101
102
1
2
3
4
5
6
7
8
TX+
TX-
RX+
RX-
TPIN-
TPIN+
TPOUT-
TPOUT+
RX_CT
TX_CT
SHIELD
SHIELD
JFM24011-0101T
RJ45 Int. Mag.
12
11
10
9 A1
K1
A1
K1
SHIELD
G
Y
560R
560R
+3.3V
LED_LINK
LED_ACTIV
+3.3V
Figure 14
Connection to the Ethernet using the RJ45 socket integrated with a transformer.
