HARDWARE
3-8
CPCI-810 User’s Manual
Revision 1.1, June 2001
Figure 3-7. Geographic Addressing Register, FF60 0000H.
3.10
ETHERNET PORTS
The two Ethernet ports are based on the Intel 82559 Fast Ethernet PCI Bus LAN Controller with
Integrated PHY and support 10BaseT or 100BaseTx signaling. If 100BaseTx signaling is negotiated
with its link partner, the port will perform serial transfer at 100Mbps. The 82559 is the core component
of the Ethernet interface. It uses a 32-bit PCI interface to communicate with the host and has an
integrated PHY (physical layer interface) that connects via an isolation transformer to the network.
3.10.1
82559 Ethernet Controller
The 82559 is an integrated 32-bit PCI bus LAN controller for 10/100Mbps Fast Ethernet networks. It
consists of both the Media Access Controller (MAC) and the 10/100Mbps physical layer interface
(PHY).
The integrated PHY supports 10BaseT and 100BaseTx operation. The PHY performs digitally
controlled receive line equalization and transmit waveform generation for 10Mbps and 100Mbps
ethernet networks.
The MAC is a 32-bit PCI bus master with enhanced scatter-gather memory operations. Four DMA
channels support high speed data transfers on the PCI interface. A microcode-based engine enables the
82559 to process high level commands and perform multiple operations without CPU intervention.
Three kilobyte transmit and receive FIFOs provide storage of multiple transmit and receive frames.
3.10.2
Ethernet Port LEDs
The Ethernet ports on the CPCI-810 each have two LEDs driven by the associated 82559 that provide a
visual indication of network status:
The LEDs labeled “LNK1” indicates link integrity for Ethernet port 1 and “LNK2” for Ethernet port 2.
The “LNK1” and “LNK2” LEDs will be on continuously if the port is connected to a functional
network or Ethernet port.
GA0
GA1
GA2
GA3
GA4
7
6
5
4
3
2
1
0
StockCheck.com
