Ethernet-Controller - Lippert PC/104-Plus Technical Manual

Technical Manual PC/104-Plus "Cool RoadRunner II" Version 1.16
In addition the right frequency generator for PAL or NTSC timing must be selected over
the general-purpose pin GP16 of the Super I/O.
For PAL timing this general-purpose pin must be held high. This can be done with the
DOS program SMCW.EXE:
For NTSC timing this general-purpose pin must be held low. This can be done with the
DOS program SMCW.EXE:
If a CRT-Monitor is used at the same time it must tolerate this timing. Because of the load
on the VGA signals by the CRT monitor the display on the TV becomes a little darker,
when connecting a CRT monitor at the same time.
When using Windows95, 98 or NT as operating system, the switch to TV PAL mode can
be done in the VGA driver. Because this will not affect the state of the GP16 pin of the Su-
per I/O, this will only result in TV PAL mode (the default setting after power-up of GP16 is
high).

1.25 Ethernet-Controller

The controller-controller 82559ER from Intel is a fully integrated 10/100 Base-TX LAN so-
lution and consists of both the Media Access Controller (MAC) and the physical layer
(PHY) interface combined into a single component solution.
The 32-bit PCI controller provides enhanced scatter-gather bus mastering capabilities and
enables the 82559ER to perform high-speed data transfers over the PCI bus. Its bus mas-
ter capabilities enable the component to process high level commands and perform multi-
ple operations, which lowers CPU utilization by off-loading communication tasks from the
CPU: Two large transmit and receive FIFOs of 3 Kbytes each help prevent data underruns
and overruns while waiting for bus accesses. This enables the 82559ER to transmit data
with minimum interframe spacing (IFS).
The 82559ER can operate in either full duplex or half duplex mode. In full duplex mode the
82559 adheres to the IEEE 802.3x Flow Control specification. Half duplex performance is
enhanced by a proprietary collision reduction mechanism.
The CSMA/CD unit of the 82559ER allows it to be connected to either a 10 or 100 Mbps
Ethernet network. The CSMA/CD unit performs all of the functions of the 802.3 protocol
such as frame formatting, frame stripping, collision handling, deferral to link traffic, etc. The
CSMA/CD unit can also be placed in a full duplex mode, which allows simultaneous
transmission and reception of frames.
The PHY unit of the 82559ER supports Auto-Negotiation for 10BaseT-/100BaseTX Half
Duplex and 10BaseT-/100BaseTX Full Duplex.
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SMCW 07, 08
SMCW E6, 02
SMCW 07, 08
SMCW E6, 00
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