Ethernet Interface; Reset; Leds; Table 2-3. Ethernet Interface Signals - Lantronix XPort AR Integration Manual

Signal Name
CHSGND
Note: The four shield tabs are also Chassis Ground. Separate Chassis Ground
appropriately from the Signal Ground and route so as to safely dissipate electrostatic
discharge.

Ethernet Interface

The RJ-45 connector, Ethernet magnetics, PHY and Ethernet status LEDs are all integrated
into the XPort AR.
Signal Name
TX+
TX-
RX+
RX-
Not Used
Not Used
Not Used
Not Used
CHSGND

Reset

The XPort AR reset pin is an input-only pin and connects to an 811-type reset IC. Internal to
the 811 is a 20k pull-up. This is the only influence the XPort AR has on the reset pin. This
input is intended for a push-button switch type manual reset. If no external reset control is
desired, leave this pin floating.

LEDs

The XPort AR contains the following LEDs:
 Link (bi-color, left LED)
 Activity (bi-color, right LED)
XPort AR Integration Guide
XPort
R Pin #
24

Table 2-3. Ethernet Interface Signals

DIR Contact Primary Function
Out 1 Differential Ethernet
Transmit Data +
Out 2 Differential Ethernet
Transmit Data -
In 3 Differential Ethernet
Receive Data +
In 6 Differential Ethernet
Receive Data -
4 (Terminated)
5 (Terminated)
7 (Terminated)
8 (Terminated)
Shield Chassis Ground
2: Description and Specifications
Primary Functions
Chassis Ground
Note
Magnetics center tap
provides signal POE12
Magnetics center tap
provides signal POE36
Pins 4 and 5 are tied
together, terminated and
form POE45
Pins 7 and 8 are tied
together, terminated and
form POE78
11