System information

Ethernet Interface

38 – Reference VSBC-6 Reference Manual

Ethernet Interface

The VSBC-6 features an industry-standard Ethernet interface based on the SMC LAN

LAN91C96 Interface Chip. While this interface is not NE2000 compatible, the SMC 9000 series

is widely supported. Drivers are readily available to support a variety of operating systems such

as QNX, VxWorks and other RTOS vendors. Win95/98/NT ship with built-in support for this

Ethernet interface. The drivers load automatically when the operating system is installed.

ARDWARE

ONFIGURATION

Jumper V6[3-4] is used to select the base I/O address for the Ethernet interface, and jumper

V6[1-2] is used to select the Ethernet media you will be using. Select the twisted pair interface if

you want to connect a twisted pair cable to the RJ45 connector. Select the AUI interface if you

want to attach an external transceiver or Media Attachment Unit (MAU). This allows use of

thick or thin coax cable, or fiber optic media to be used.

See page 21 for jumper configuration details.

Note! Use of the AUI interface requires connection of +12V power to the VSBC-6.

OFTWARE

ONFIGURATION

The CMOS Setup screen is used to define the base address and the IRQ line used by the Ethernet

interface, or to enable/disable the device. When disabled, the ethernet interface is "parked" at I/O

addresses 180h – 18Fh and it does not use any interrupts.

THERNET

ONNECTORS

Table 15: RJ45 Ethernet Connector

Signal

Name Function

1 T+ Transmit Data +

2 T– Transmit Data –

3 R+ Receive Data +

4 NC No Connection

5 NC No Connection

6 R– Receive Data –

Table 16: AUI Ethernet Connector

Signal

Name Function

1 CD– Collision Detect –

2 CD+ Collision Detect +

3 TX– Transmit Data –

4 TX+ Transmit Data +

5 GND Ground

6 GND Ground

7 RX– Receive Data –

8 RX+ Receive Data +

9 +12V +12V Power

10 GND Ground