Technologic Systems TS-5500, User Manual

TS-5500 User’s Manual 

Technologic Systems 

10/31/03

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10  The 10/100 Base-T Ethernet Port 

The TS-5500 has a full-function IEEE 802.3 (10/100 Mbit/sec) Ethernet port provided by Davicom 
DM9102A Ethernet controllers. The DM9102A is a single-chip, 32-bit PCI Ethernet controller that 
includes such features as full-duplex operation, power saving shutdown modes, LED indicators for link 
status/activity (Green) and auto-sense network speed detection (Amber). The physical interface is 
10/100Base-T (RJ45 connector). 

The TS-5500 has both a LINK/ACTIVITY LED and a 10/100 speed LED built into each RJ-45 connector 
that indicates the current Ethernet status. The LINK LED (left side of connector, green) is active when a 
valid Ethernet link is detected.  This LED should be ON whenever the TS-5500 is powered on and 
properly connected to a 10/100BaseT Ethernet network.  The LINK/ACTIVITY LED will blink to indicate 
network activity either inbound or outbound. The SPEED LED (right side of connector, amber) will be on 
when a 100 Mbit network is detected and off for a 10 Mbit network. Both of these LEDs are controlled by 
the DM9102A and do not require initialization by the processor. 

10.1  LINUX TCP/IP configuration 

When using the TS-5500 with TS-Linux, the DM9102A driver can be included in the kernel or loaded as 
a kernel module. If the Technologic Systems kernel is used, the DM9102A driver is built into the kernel. 
The settings stored in EEPROM on the TS-5500 are used to configure the DM9102A.  

The TCP/IP settings for the TS-Linux are configured in the file ‘/etc/sysconfig/ifcfg-eth0’, here is a listing: 

DEVICE=eth0 

# Name of Ethernet interface 

IPADDR=192.168.0.50 

# IP address of this Ethernet interface. 

NETMASK=255.255.255.0 

# Used with NETWORK to determine local IP’s. 

NETWORK=192.168.0.0 

# Used with NETMASK to determine local 

IP’s. 

BROADCAST=192.168.0.255 # Broadcast IP for system wide messages

. 

ENABLE=yes 

# Initialize on startup 

The TCP/IP network settings are configured in the file ‘/etc/sysconfig/network_cfg’, here is a listing: 

### Technologic Systems 
### General Network Configuration File 
### 

NETWORKING=yes 
GATEWAY=192.168.0.1 

# Gateway for internet access 

GW_DEV=eth0 

# Gateway device to use 

Hostname="miniepc.embeddedx86.com" 

# Host name for this computer 

BOOTPROTO=no 
DEFRAG_IPV4=no 
FORWARD_IPV4=no

The TCP/IP name resolution server is configured in the file ‘/etc/resolv.conf’, here is a listing: 

Nameserver 192.168.0.1  # Name server for domain name lookups. 

To access the web server, open a web browser and enter “192.168.0.50” as the address. This 
should display the sample web page which demonstrates some of the functionality of Apache with 
PHP. Use the “ifconfig” command at the bash prompt to display the status of the Ethernet ports. 
See the Technologic Systems Linux support page: 

http://www.embeddedx86.com/support/linuxhelp.php