http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




Analog Devices Semiconductor Electronic Components Datasheet

AD8155 Datasheet

6.5 Gbps Dual Buffer Mux/Demux

No Preview Available !

AD8155 pdf
www.DataSheet4U.com
FEATURES
Dual 2:1 mux/1:2 demux
Optimized for dc to 6.5 Gbps NRZ data
Per-lane P/N pair inversion for routing ease
Programmable input equalization
Compensates up to 40 inches of FR4
Loss-of-signal detection
Programmable output preemphasis up to 12 dB
Programmable output levels with squelch and disable
Accepts ac-coupled or dc-coupled differential CML inputs
50 Ω on-chip termination
1:2 demux supports unicast or bicast operation
Port-level loopback
Port or single lane switching
1.8 V to 3.3 V flexible core supply
User-settable I/O supply from VCC to 1.2 V
Low power, typically 2.0 W in basic configuration
64-lead LFCSP
−40°C to +85°C operating temperature range
APPLICATIONS
Low cost redundancy switch
SONET OC48/SDH16 and lower data rates
RXAUI, 4× Fibre Channel, Infiniband, and GbE over
backplane
OIF CEI 6.25 Gbps over backplane
Serial data-level shift
2-/4-/6-lane equalizers or redrivers
GENERAL DESCRIPTION
The AD8155 is an asynchronous, protocol-agnostic, dual-lane
2:1 switch with a total of six differential CML inputs and
six differential CML outputs. The signal path supports NRZ
signaling with data rates up to 6.5 Gbps per lane. Each lane
offers programmable receive equalization, programmable
output preemphasis, programmable output levels, and loss-of-
signal detection.
The nonblocking switch core of the AD8155 implements a
2:1 multiplexer and 1:2 demultiplexer per lane and supports
independent lane switching through the two select pins,
SEL[1:0]. Each port is a two-lane link. Every lane implements
an asynchronous path supporting dc to 6.5 Gbps NRZ data,
fully independent of other lanes. The AD8155 has low latency
and very low lane-to-lane skew.
Rev. 0
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
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
6.5 Gbps
Dual Buffer Mux/Demux
AD8155
FUNCTIONAL BLOCK DIAGRAM
Ix_A[1:0]
RECEIVE
EQUALIZATION
EQ
Ix_B[1:0]
EQ
2:1
TRANSMIT
PRE-
EMPHASIS
Ox_C[1:0]
Ox_A[1:0]
Ox_B[1:0]
SCL
SDA
I2C_A[2:0]
1:2 EQ Ix_C[1:0]
TRANSMIT
PRE-
EMPHASIS
DUAL
2:1
MULTIPLEXER/
1:2
DEMULTIPLEXER
RECEIVE
EQUALIZATION
I2C
CONTROL
LOGIC
AD8155
CONTROL
LOGIC
LB_A
LB_B
LB_C
PE_A
PE_B
PE_C
EQ_A
EQ_B
EQ_C
SEL[1:0]
BICAST
SEL4G
RESET
LOS_INT
Figure 1.
The main application of the AD8155 is to support redundancy
on both the backplane and the line interface sides of a serial
link. The demultiplexing path implements unicast and bicast
capability, allowing the part to support either 1 + 1 or 1:1
redundancy.
The AD8155 is also suited for testing high speed serial links
because of its ability to duplicate incoming data. In a port-
monitoring application, the AD8155 can maintain link
connectivity with a pass-through connection from Port C to
Port A while sending a duplicate copy of the data to test
equipment on Port B.
The rich feature set of the AD8155 can be controlled either
through external toggle pins or by setting on-chip control
registers through the I2C® interface.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2009 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD8155 Datasheet

6.5 Gbps Dual Buffer Mux/Demux

No Preview Available !

AD8155 pdf
AD8155www.DataSheet4U.com
TABLE OF CONTENTS
Features .............................................................................................. 1 
Applications....................................................................................... 1 
Functional Block Diagram .............................................................. 1 
General Description ......................................................................... 1 
Revision History ............................................................................... 2 
Specifications..................................................................................... 3 
I2C Timing Specifications............................................................ 5 
Absolute Maximum Ratings............................................................ 6 
ESD Caution.................................................................................. 6 
Pin Configuration and Function Descriptions............................. 7 
Typical Performance Characteristics ............................................. 9 
Theory of Operation ...................................................................... 15 
The Switch (Mux/Demux/Unicast/Bicast/Loopback)........... 16 
Receivers ...................................................................................... 18 
Loss of Signal (LOS)................................................................... 20 
Transmitters ................................................................................ 21 
REVISION HISTORY
7/09—Revision 0: Initial Version
AD8155 Power Consumption .................................................. 22 
I2C Control Interface...................................................................... 24 
Serial Interface General Functionality..................................... 24 
I2C Interface Data Transfers: Data Write ................................ 24 
I2C Interface Data Transfers: Data Read ................................. 25 
Applications Information .............................................................. 26 
Output Compliance ................................................................... 27 
Signal Levels and Common-Mode Shift for AC-Coupled and
DC-Coupled Outputs ................................................................ 28 
Supply Sequencing ..................................................................... 30 
Single Supply vs. Multiple Supply Operation ......................... 30 
Initialization Sequence for Low Power and LOS_INT
Operation .................................................................................... 30 
Printed Circuit Board (PCB) Layout Guidelines ................... 31 
Register Map ................................................................................... 33 
Outline Dimensions ....................................................................... 35 
Ordering Guide .......................................................................... 35 
Rev. 0 | Page 2 of 36


Part Number AD8155
Description 6.5 Gbps Dual Buffer Mux/Demux
Maker Analog Devices
Total Page 30 Pages
PDF Download
AD8155 pdf
Download PDF File
AD8155 pdf
View for Mobile



Buy Electronic Components




Related Datasheet

1 AD815 High Output Current Differential Driver Analog Devices
Analog Devices
AD815 pdf
2 AD8150 33 x 17/ 1.5 Gbps Digital Crosspoint Switch Analog Devices
Analog Devices
AD8150 pdf
3 AD8151 Digital Crosspoint Switch Analog Devices
Analog Devices
AD8151 pdf
4 AD8152 Digital Crosspoint Switch Analog Devices
Analog Devices
AD8152 pdf
5 AD8153 Single Buffered Mux/Demux Switch Analog Devices
Analog Devices
AD8153 pdf
6 AD8155 6.5 Gbps Dual Buffer Mux/Demux Analog Devices
Analog Devices
AD8155 pdf
7 AD8156 Digital Crosspoint Switch Analog Devices
Analog Devices
AD8156 pdf
8 AD8158 6.5 Gbps Quad Buffer Mux/Demux Analog Devices
Analog Devices
AD8158 pdf
9 AD8159 Quad Buffer Mux/Demux Analog Devices
Analog Devices
AD8159 pdf






Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components