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AD8155ACPZ-R7 Datasheet(PDF) 26 Page - Analog Devices |
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AD8155ACPZ-R7 Datasheet(HTML) 26 Page - Analog Devices |
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26 / 35 page ![]() AD8155 Data Sheet Rev. A | Page 26 of 35 APPLICATIONS INFORMATION The main application of the AD8155 is to support redundancy on both the backplane side and the line interface side of a serial link. Each port consists of four lanes to support standards such as RXAUI. Figure 43 illustrates redundancy in an RXAUI backplane system. Each line card is connected to two switch fabrics (primary and redundant). The device can be configured to support either 1 + 1 or 1:1 redundancy. Also, the AD8155 can enable module redundancy, as shown in Figure 44, and can be used as a four- or six-lane signal conditioning device to enable high speed serial communication over long copper links. FABRIC CARDS LINE CARDS BACKPLANE AD8155 PHYSICAL INTERFACE MACs FRAMERS FABRIC INTERFACE TRAFFIC MANAGERS NETWORK PROCESSOR AD8155 FABRIC INTERFACE TRAFFIC MANAGERS NETWORK PROCESSOR REDUNDANT SWITCH FABRIC PRIMARY SWITCH FABRIC PHYSICAL INTERFACE MACs FRAMERS Figure 43. Using the AD8155 for Switch Redundancy LINE CARD MACs FRAMERS FABRIC INTERFACE TRAFFIC MANAGERS NETWORK PROCESSOR PRIMARY MODULE REDUNDANT MODULE AD8155 Figure 44. Using the AD8155 for Module Redundancy EQ PE EQ ASIC 1 ASIC 2 PE PE EQ PE EQ OUT 1 Z0 Z0 Z0 Z0 Z0 Z0 Z0 Z0 Z0 Z0 Z0 Z0 Z0 Z0 Z0 Z0 LOSSY CHANNEL LOSSY CHANNEL OUT 2 IN 3 IN 4 IN 1 IN 2 OUT 3 OUT 4 Figure 45. Using the AD8155 for Signal Conditioning |
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