Pericom Solutions for PCI Express (PCIe) - Hy-Line
Pericom Solutions for PCI Express (PCIe) - Hy-Line
Pericom Solutions for PCI Express (PCIe) - Hy-Line
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<strong>PCI</strong>e Technical Overview<br />
� <strong>PCI</strong>e data transfer is much faster than <strong>PCI</strong> because <strong>PCI</strong>e<br />
devices operate in Full Duplex mode - send and receive data<br />
directly to each other at the same time. No sharing of a<br />
common bus like <strong>PCI</strong>.<br />
Simplified <strong>PCI</strong>e Port<br />
Device or Switch<br />
Transaction Layer<br />
Data CPU<br />
Link Layer<br />
Physical Layer<br />
+ -<br />
TX<br />
+ -<br />
RX<br />
10 Copyright <strong>Pericom</strong> Semiconductor 2006<br />
• <strong>PCI</strong>e data is sent in Packets that have an<br />
address Header telling the switch where to<br />
send the data.<br />
• <strong>PCI</strong>e data rate = 2.5Gb/sec per LANE. Up to<br />
32 Lanes make up a LINK.<br />
• 1 Lane = 1 Rx differential pair + 1 Tx<br />
differential pair = 4 connections per Lane<br />
1 Rx Pair and 1 Tx Pair = One Lane
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