Functional Description
MEN Mikro Elektronik GmbH
14
20F301-00 E2 – 2011-01-03
2
Functional Description
2.1
Power Supply
The F301 is supplied with +5V and +3.3V via the CompactPCI bus.
2.2
Ethernet Ports
2.2.1
Implementation on F301
The F301 is based on the KS8999 9-port Ethernet switch. (See
Chapter 2.3 Ethernet
Switch on page 16
.)
The board allows data rates of up to 100Mbits/s and supports full-duplex operation.
Full-duplex and half-duplex network environments are autodetected using the
IEEE802.3 autonegotiation algorithm.
The physical interfaces are implemented as 10/100Base-TX (Twisted Pair) with
eight standard 8-pin RJ45 connectors with status LEDs at the front panel for ports
1..8. Alternatively, versions with four 8-pin RJ45 connectors (ports 1..4) or six 9-pin
D-Sub connectors (ports 1..6) are available (see
Chapter 1.1 Front Panels on page
12
).
For the ninth port there is an additional Ethernet controller, the Intel® 82551ER Fast
Ethernet controller. This chip connects directly to the CompactPCI bus. The
82551ER includes a 3-kbyte transmit and receive FIFO and both a MAC and PHY.
Alternatively, the ninth port is available on J2 for rear I/O connection. (See also
Chapter 2.5 CompactPCI Interface on page 17
.) The "ninth" port is available for all
versions of F301, independent of the front panel ports.
Table 1.
Signal Mnemonics for Ethernet Connectors
There are two status LEDs for each RJ45 connector. For the integrated Ethernet
controller 82551ER there are two additional LEDs at the front panel.
Table 2.
Status LEDs
Signal
Direction
Function
RX+/-
in
Differential pair of receive data lines for 10/100Base-T
TX+/-
out
Differential pair of transmit data lines for 10/100Base-T
LED Color
LED Designation
Funktion
Yellow
LNK
10/100 + link + activity
Blinking slowly: 10Mbits/s activity
Blinking fast: 100Mbits/s activity
Green
ACT
Receive activity
On: receiving
Off: not receiving
