2: Description and Specifications
XPort AR Integration Guide
10
Table 2-1. Standard Interface Signals
Signal Name
XPort AR
Pin #
Primary Functions
GND
4
Signal Ground
VCC
5
+3.3V Power In
_________
Reset
8
External Reset In
TXDA
9
Serial Data Out, Channel A
RXDA
12
Serial Data In, Channel A
CP01
13
Programmable I/O or RTSA flow control
CP02
16
Programmable I/O or DTRA flow control
CP03
17
Programmable I/O or CTSA flow control
CP04
3
Programmable I/O or DSRA flow control
CP05
7
Programmable I/O or DCDA flow control
CP06
2
Programmable I/O or TXDB flow control
CP07
10
Programmable I/O or RXDB flow control
CP08
1
Programmable I/O or RTSB flow control
CP09
6
Programmable I/O or DTRB flow control
CP10
20
Programmable I/O or CTSB flow control
CP11
19
Programmable I/O or DSRB/DCDB flow control
CP12
11
I
2
C clock
CP13
14
I
2
C data
Reserved
15
Reserved
Reserved
18
Reserved
PoE Pins
XPort AR is PoE-ready; it allows a fully compliant PoE circuit to be implemented that uses the
Ethernet signals entering the XPort AR’s RJ-45 jack. When the XPort AR’s RJ-45 jack is
connected to a PoE compliant switch, pins 21, 22, 25, and 26 pass through the necessary
Ethernet signals to allow a PoE powered-device circuit to negotiate and receive power from
the switch.
Table 2-2. PoE Interface Signals
Signal Name
XPort
R Pin #
Primary Functions
POE12
22
Center tap from 1 & 2
POE36
25
Center tap from 3 & 6
POE45
21
Ethernet pins 4 & 5
POE78
26
Ethernet pins 7 & 8
CHSGND
23
Chassis Ground
