SENA HD1200 - Manual (Page 9)

Starter Kit and User Manual for the HelloDevice 1200
6
Pin No. Description Red Line
1 Tx+ White with orange
2 Tx- Orange
3 Rx+ White with green
4 Not used Blue
5 Not used White with blue
6 Rx- Green
7 Not used White with brown
8 Not used Brown
Figure 3.4. RJ45 connector
3.4.3 Status Indicator LED's
There are four status indicator LED’s which indicate the following.
!" Power LED
Indicates the Power-On status of the HelloDevice.
!" Rx LED
Indicates that the Ethernet controller is receiving Ethernet packets from the network. If it is correctly
connected to the network, this LED will blink when packets are received
!" Tx LED
Indicates that the Ethernet controller is sending packets. Before setting the HelloDevice network
configuration, this LED will blink every second. After network configuration, if connected correctly, this
LED blinks only in response to requests from the user's PC, for example ping or server activity.
!" Collision LED
Indicates that one or more Ethernet packets transmitted from the Ethernet controller to the network may
have collided with another packets. In this case, the Ethernet controller will automatically resend the packets.
3.5 Dual-Port RAM
Dual-Port RAM is a 2 Kbytes duplex communication memory chip which both a user device and the
HelloDevice can read/write. This memory can be accessed through 8 data lines (BD0 ~ BD7) and 11 address
1=Tx+
2=Tx-
3=Rx+
4=NC 5=NC
6=Rx-
7=NC
8=NC