Model 920 Ethernet Data Multiplexer Manual
Focal Technologies Corporation
Page 2-4
A Moog Inc. Company
920-0603-00 Rev K
2.1.4 Ethernet Channel 3, 10/100 BASE-T(X) (and optional 1000 BASE-T)
This port has auto-crossover and standard auto-negotiation abilities to 10, 100 Mbps (and 1000 Mbps for the
2.5Gbps Version). CAT5 or better cabling is recommended for all installations with a maximum cable length of
100m. All packets to/from Ethernet channel 3 connect directly to Ethernet channel 3 on the far side of the Model
920 system.
NOTE: A 1000 BASE-T link is possible for port 3 if forced. Throughput is limited to 100 Mbps for the 625 MBaud
version of the Model 920 EDM. If packets are being dropped, ensure that both ends of the system are linked at
the same speed, and not 1000-BASE-T, by reading register [40004].
Figure 5: RJ45 10/100/1000 BASE-T(X)
Table 3: RJ45 10/100/1000 BASE-T(X) pinout
Pin #
Function
1
TRD1+
2
TRD1-
3
TRD2+
4
TRD3+
5
TRD3-
6
TRD2-
7
TRD4+
8
TRD4-
Table 4: 10/100/1000 BASE-T(X) RJ45 LED Indication
Position
LED
Function
Left/Top
Yellow
N/A
Left/Top
Green
Link
Left/Top
Green Blinking
Activity
Left/Top
Off
No Link
Right/Bottom
Green
1000 BASE-T
Right/Bottom
Yellow
100 BASE-TX
Right/Bottom
Off
10 BASE-T