Pin Assignments - HP JG221A Installation Manual

Figure 48 Crossover cable
Crossover cable

Pin assignments

Select an Ethernet twisted pair cable according to the RJ-45 Ethernet interface type on your device. An RJ-45
Ethernet interface can be MDI (for routers and PCs) or MDIX (for switches). For the pinouts of RJ-45 Ethernet
interfaces, see
Table 28 RJ-45 MDI interface pinouts
Pin
1
2
3
4
5
6
7
8
Table 28 and Table 29.
10Base-T/100Base-TX
Signal
Tx+
Tx-
Rx+
Reserved
Reserved
Rx-
Reserved
Reserved
1 white/orange
orange
2
white/green
3
4 blue
5 white/blue
6 green
white/brown
7
8
brown
1 white/green
green
2
3
white/orange
4 blue
5 white/blue
6 orange
7
white/brown
8
brown
1000Base-T
Function Signal
Send data BIDA+
Send data BIDA-
Receive data BIDB+
— BIDC+
— BIDC-
Receive data BIDB-
— BIDD+
— BIDD-
52
Function
Bi-directional data
cable A+
Bi-directional data
cable A+
Bi-directional data
cable B+
Bi-directional data
cable C+
Bi-directional data
cable C
Bi-directional data
cable B
Bi-directional data
cable D+
Bi-directional data
cable D-