Keywords: equalizing, equalizer, equalizers, backplane, backplanes, 3.125Gbps, 3.125G, IEEE, IEEE802.3ae, 10G, 10Gbps, Ethernet, XAUI Related Parts
APPLICATION NOTE 863
MAX3980: Equalizing XAUI Backplanes with the MAX3980
Nov 28, 2001
Abstract: This discussion explores the performance of the MAX3980 XAUI Equalizer in compensating backplane
interconnects that operate at 3.125Gbps. This includes testing in the presence of crosstalk. Although
the examples in this discussion use 3.125Gbps, the MAX3980 is capable of operating in the range of
2.5Gbps to 4Gpbs providing that the data is limited to a consecutive identical digit (CID) length of 7 bits.
Optimum performance is achieved with 3b/10b coding (CID <5) as found in the IEEE802.3ae 10G
Ethernet standard, clause 47. Clause 47 describes an electrical interface called the "10Gigabit Attachment
Unit Interface." This is abbreviated as XAUI. The "X" is the Roman numeral for 10.
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APPLICATION NOTE 863: MAX3980: Equalizing XAUI Backplanes with the MAX3980