3.2 Gbps Single Buffered Mux/Demux Switch Data Sheet AD8153 FEATURES FUNCTIONAL BLOCK DIAGRAM Single lane 2:1 mux/1:2 demux RECEIVE TRANSMIT 3.2 Gbps to dc data rates PRE-EMPHASIS EQUALIZATION Compensates over 40 inches of FR4 at 3.2 Gbps through INPUT A EQ Two levels of input equalization, or OUTPUT C Four levels of output pre-emphasis INPUT B EQ Operates with ac- or dc-coupled differential I/O RECEIVE Low deterministic jitter, typically 16 ps p-p EQUALIZATION OUTPUT A Low random jitter, typically 500 fs rms EQ INPUT C On-chip terminations OUTPUT B Unicast or bicast on 1:2 demux function SEL TRANSMIT 2:1 MULTIPLEXER/ Loopback capability on all ports PRE-EMPHASIS 1:2 DEMULTIPLEXER BICAST LB A 3.3 V core supply LB B LB C CONTROL Flexible I/O supply MODE LOGIC 1 Low power, typically 200 mW in basic configuration RESETB EQ A/(SCL) AD8153 32-lead LFCSP package EQ B/(SDA) EQ C 40C to +85C operating temperature range PE A/(I2C A 0 ) PE B/(I2C A 1 ) PE C/(I2C A 2 ) APPLICATIONS Figure 1. Low cost redundancy switch SONET OC48/SDH16 and lower data rates Gigabit Ethernet over backplane Fibre Channel 1.06 Gbps and 2.12 Gbps over backplane Serial RapidIO PCI Express Gen 1 Infiniband over backplane provide access to advanced features, such as additional pre- GENERAL DESCRIPTION emphasis settings and output disable. In mixed mode, the user The AD8153 is an asynchronous, protocol agnostic, single-lane 2 accesses the advanced features using I C, but controls lane 2:1 switch with three differential CML inputs and three differential switching using the external pins. CML outputs. The AD8159, another member of the Xstream line of products, is suitable for similar applications that require The main application of the AD8153 is to support redundancy more than one lane. on both the backplane side and the line interface side of a serial link. The device has unicast and bicast capability, so it is capable The AD8153 is optimized for NRZ signaling with data rates of of supporting either 1 + 1 or 1:1 redundancy. up to 3.2 Gbps per port. Each port offers two levels of input Using a mixture of bicast and loopback modes, the AD8153 can equalization and four levels of output pre-emphasis. also be used to test high speed serial links by duplicating the The device consists of a 2:1 multiplexer and a 1:2 demultiplexer. incoming data and transmitting it to the destination port and There are three operating modes: pin mode, serial mode, and test equipment simultaneously. mixed mode. In pin mode, lane switching, equalization, and 1 pre-emphasis are controlled exclusively using external pins. In Two ports active with no pre-emphasis. 2 serial mode, an I C interface is used to control the device and to Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20072015 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 06393-001AD8153 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Transmit Pre-Emphasis ............................................................. 14 2 Applications ....................................................................................... 1 I C Serial Control Interface ........................................................... 15 Functional Block Diagram .............................................................. 1 Register Set .................................................................................. 15 General Description ......................................................................... 1 General Functionality ................................................................ 15 2 Revision History ............................................................................... 2 I C Data Write ............................................................................. 16 2 Specifications ..................................................................................... 3 I C Data Read .............................................................................. 17 2 I C Timing Specifications ............................................................ 4 Applications Information .............................................................. 18 Absolute Maximum Ratings ............................................................ 5 PCB Design Guidelines ................................................................. 19 ESD Caution .................................................................................. 5 Interfacing to the AD8153 ............................................................. 20 Pin Configuration and Function Descriptions ............................. 6 Termination Structures .............................................................. 20 Typical Performance Characteristics ............................................. 7 Input Compliance ....................................................................... 20 Theory of Operation ...................................................................... 13 Output Compliance ................................................................... 21 Switch Configurations ............................................................... 13 Outline Dimensions ....................................................................... 22 Receive Equalization .................................................................. 14 Ordering Guide .......................................................................... 22 REVISION HISTORY 5/15Rev. 0 to Rev. A Updated Outline Dimensions ....................................................... 22 Changes to Ordering Guide .......................................................... 22 4/07Revision 0: Initial Version Rev. A Page 2 of 24