ARIA SOHO Hardware Description and Installation Manual
Issue 1
BOARD INSTALLATION
Aug, 2006
42
4.5.3 LAN Interface Unit (LANU)
LAN Interface Unit (LANU) should be installed on the LANU connector (CN3) of the MBU and provides 1 LAN port of
10 Base-T networking. RJ45 Modular Jack, MJ1 is used to interface with a Wide Area Network (WAN) or PC. Two
LEDs are provided to indicate the operational state of the LAN port.
FIGURE 4.5.3 LANU
4.5.3.1 Pin Assignment
LANU
CONNECTOR
PIN NUMBER
NO
SIGNAL NAME
FUNCTION
4,5,7,8 Reserved
1 TX+
Transmit
Data
2 TX-
Transmit
Data
3 RX-
Receive
Data
RJ45
6 RX+
Receive
Data
PC
CONNECTOR
PIN NUMBER
NO
SIGNAL NAME
FUNCTION
4,5,7,8 Reserved
1 RX-
Receive
Data
2 RX+
Receive
Data
3 TX+
Transmit
Data
RJ45
6 TX-
Transmit
Data
LED INDICATION (MJ1)
LED
MEANING
LD1 (Green)
Data Transfer Status (toggle) – ON, link; OFF, no link
LD2 (Orange)
Link Status and Activity – OFF, link and activity at 10Mbps)