4:1 HDMI/DVI Switch with Equalization AD8197A FEATURES FUNCTIONAL BLOCK DIAGRAM 4 inputs, 1 output HDMI/DVI link Enables HDMI 1.3-compliant receiver Pin-to-pin compatible with the AD8191A RESET 4 TMDS channels per link PARALLEL AD8197A SERIAL 2 2 Supports 250 Mbps to 2.25 Gbps data rates AVCC Supports 25 MHz to 225 MHz pixel clocks I2C SDA DVCC CONFIG CONTROL I2C SCL 3 Equalized inputs for operation with long HDMI cables INTERFACE LOGIC AMUXVCC I2C ADDR 2:0 AVEE (20 meters at 2.25 Gbps) VTTI DVEE Fully buffered unidirectional inputs/outputs Globally switchable, 50 on-chip terminations + 4 VTTO IP A 3:0 4 IN A 3:0 Pre-emphasized outputs 4 + IP B 3:0 4 4 + Low added jitter IN B 3:0 OP 3:0 SWITCH 4 + 4 CORE ON 3:0 IP C 3:0 Single-supply operation (3.3 V) PE 4 EQ IN C 3:0 4 auxiliary channels per link + 4 IP D 3:0 4 IN D 3:0 Bidirectional unbuffered inputs/outputs HIGH SPEED BUFFERED Flexible supply operation (3.3 V to 5 V) HDCP standard compatible VTTI 4 AUX A 3:0 4 Allows switching of DDC bus and 2 additional signals AUX B 3:0 4 SWITCH 4 AUX COM 3:0 CORE AUX C 3:0 Output disable feature 4 AUX D 3:0 Reduced power dissipation LOW SPEED UNBUFFERED Removable output termination BIDIRECTIONAL Allows building of larger arrays Figure 1. 2 AD8197A devices support HDMI/DVI dual-link TYPICAL APPLICATION Standards compatible: HDMI receiver, HDCP, DVI GAME CONSOLE 2 MEDIA CENTER Serial (I C slave) and parallel control interface HDTV SET 100-lead, 14 mm 14 mm LQFP, Pb-free package HDMI RECEIVER APPLICATIONS SET-TOP BOX DVD PLAYER AD8197A 04:20 Multiple input displays Projectors Figure 2. Typical HDTV Application A/V receivers Set-top boxes Advanced television (HDTV) sets GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The AD8197A is an HDMI/DVI switch featuring equalized 1. Supports data rates up to 2.25 Gbps, enabling 1080p deep TMDS inputs and pre-emphasized TMDS outputs, ideal for color (12-bit color) HDMI formats, and greater than systems with long cable runs. Outputs can be set to a high UXGA (1600 1200) DVI resolutions. impedance state to reduce the power dissipation and/or to allow 2. Input cable equalizer enables use of long cables at the input the construction of larger arrays using the wire-OR technique. (more than 20 meters of 24 AWG cable at 2.25 Gbps). 3. Auxiliary switch routes a DDC bus and two additional signals The AD8197A is provided in a 100-lead LQFP, Pb-free, surface- for a single-chip, HDMI 1.3 receive-compliant solution. mount package, specified to operate over the 40C to +85C temperature range. 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 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 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PP CH 1:0 PP OTO PP OCL PP EQ PP EN PP PRE 1:0 07014-001 07014-002AD8197A TABLE OF CONTENTS Features .............................................................................................. 1 Read Procedure........................................................................... 16 Applications....................................................................................... 1 Switching/Update Delay............................................................ 16 Functional Block Diagram .............................................................. 1 Parallel Control Interface .............................................................. 17 Typical Application........................................................................... 1 Serial Interface Configuration Registers ..................................... 18 General Description ......................................................................... 1 High Speed Device Modes Register......................................... 19 Product Highlights ........................................................................... 1 Auxiliary Device Modes Register............................................. 19 Revision History ............................................................................... 2 Receiver Settings Register ......................................................... 19 Specifications..................................................................................... 3 Input Termination Pulse Register 1 and Register 2 ............... 19 Absolute Maximum Ratings............................................................ 5 Receive Equalizer Register 1 and Register 2 ........................... 20 Thermal Resistance ...................................................................... 5 Transmitter Settings Register.................................................... 20 Maximum Power Dissipation ..................................................... 5 Parallel Interface Configuration Registers .................................. 21 ESD Caution.................................................................................. 5 High Speed Device Modes Register......................................... 22 Pin Configuration and Function Descriptions............................. 6 Auxiliary Device Modes Register............................................. 22 Typical Performance Characteristics ............................................. 9 Receiver Settings Register ......................................................... 22 Eye Diagrams ................................................................................ 9 Input Termination Pulse Register 1 and Register 2 ............... 22 Performance Graphs .................................................................. 11 Receive Equalizer Register 1 and Register 2 ........................... 22 Theory of Operation ...................................................................... 13 Transmitter Settings Register.................................................... 22 Introduction ................................................................................ 13 Application Information................................................................ 23 Input Channels............................................................................ 13 Pinout........................................................................................... 23 Output Channels ........................................................................ 13 Cable Lengths and Equalization............................................... 23 Auxiliary Switch.......................................................................... 14 PCB Layout Guidelines.............................................................. 24 Serial Control Interface.................................................................. 15 Outline Dimensions....................................................................... 28 Reset ............................................................................................. 15 Ordering Guide .......................................................................... 28 Write Procedure.......................................................................... 15 REVISION HISTORY 11/07Revision 0: Initial Version Rev. 0 Page 2 of 28