Sun Microsystems FASTETHERNET 6U - Manual (Page 76)

58 Sun Quad FastEthernet 6U CompactPCI Adapter Installation and User’s Guide • June 2000
Sun Quad FastEthernet Device Driver
Parameters
This section describes the hardware overview of the local transceiver used in the
adapter and defines the
qfe device driver parameters.
Hardware Overview
The four SUNW,qfe channels each provide 10BASE-T or 100BASE-TX networking
interfaces, using the PCI FastEthernet and Expansion (PFEX) ASIC and a local
transceiver. The device driver automatically sets the link speed to 10 or 100 Mbps
and conforms to the 100BASE-T IEEE 802.3u Ethernet standard. The PFEX ASIC
provides the PCI interface and medium access control (MAC) functions. The local
transceiver, which connects to an RJ-45 connector, provides the physical-layer
functions.
The local transceiver is capable of all the operating speeds and modes listed below:
■ 100 Mbps, full-duplex
■ 100 Mbps, half-duplex
■ 10 Mbps, full-duplex
■ 10 Mbps, half-duplex
The local transceiver performs autonegotiation with the remote end of the link (the
link partner) to select a common mode of operation. See “Autonegotiation Protocol”
on page 45 for more information.
The local transceiver also supports a forced mode of operation. You can set the speed
and mode using the
ndd utility, or, to make sure the changes persist after a system
reboot, you can create a qfe.conf file. See “Setting the qfe Device Driver
Parameters” on page 65 for more information about setting driver parameters.