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AD8191 Scheda tecnica(PDF) 1 Page - Analog Devices |
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AD8191 Scheda tecnica(HTML) 1 Page - Analog Devices |
1 / 32 page 4:1 HDMI/DVI Switch with Equalization AD8191 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. 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 ©2006 Analog Devices, Inc. All rights reserved. FEATURES Four inputs, one output HDMI™/DVI links Four TMDS channels per link Supports 250 Mbps to 1.65 Gbps data rates Supports 25 MHz to 165 MHz pixel clocks Equalized inputs for operation with long HDMI cables (20 meters at 1080p) Fully buffered unidirectional inputs/outputs Globally switchable, 50 Ω on-chip terminations Pre-emphasized outputs Low added jitter Single-supply operation (3.3 V) Four auxiliary channels per link Bidirectional unbuffered inputs/outputs Flexible supply operation (3.3 V to 5 V) HDCP standard compatible Allows switching of DDC bus and two additional signals Multiple channel bundling modes 1x (4:1) HDMI/DVI link switch (default) 2x (8:1) TMDS channel and auxiliary signal switch 1x (16:1) TMDS channel and auxiliary signal switch Output disable feature Reduced power dissipation Removable output termination Allows building of larger arrays Two AD8191s support HDMI/DVI dual-link Standards compatible: HDMI receiver, DVI, HDCP Serial (I2C® slave) and parallel control interface 100-lead, 14 mm × 14 mm LQFP, Pb-free package APPLICATIONS Multiple input displays Projectors A/V receivers Set-top boxes Advanced television (HDTV) sets FUNCTIONAL BLOCK DIAGRAM LOW SPEED UNBUFFERED HIGH SPEED BUFFERED AVCC DVCC AMUXVCC AVEE DVEE VTTO OP[3:0] AUX_COM[3:0] ON[3:0] + – 4 BIDIRECTIONAL I2C_SDA I2C_SCL I2C_ADDR[2:0] VTTI VTTI IP_A[3:0] IN_A[3:0] + – IP_B[3:0] IN_B[3:0] + – IP_C[3:0] IN_C[3:0] + – IP_D[3:0] IN_D[3:0] AUX_C[3:0] AUX_B[3:0] AUX_A[3:0] AUX_D[3:0] + – 4 4 4 4 4 4 4 4 4 4 4 4 EQ SWITCH CORE SWITCH CORE CONTROL LOGIC CONFIG INTERFACE 3 2 2 SERIAL PARALLEL RESET PE 4 4 AD8191 Figure 1. TYPICAL APPLICATION DVD PLAYER GAME CONSOLE SET-TOP BOX MEDIA CENTER HDTV SET HDMI RECEIVER AD8191 01:18 Figure 2. Typical HDTV Application GENERAL DESCRIPTION The AD8191 is a HDMI/DVI switch featuring equalized TMDS inputs and pre-emphasized TMDS outputs, ideal for systems with long cable runs. Outputs can be set to a high impedance state to reduce the power dissipation and/or allow the construc- tion of larger arrays using the wire-OR technique. Flexible channel bundling modes (for both the TMDS channels and the auxiliary signals) allow the AD8191 to be configured as a 4:1 single HDMI/DVI link switch, a dual 8:1 switch, or a single 16:1 switch. The AD8191 is provided in a 100-lead LQFP, Pb-free, surface mount package specified to operate over the −40°C to +85°C temperature range. PRODUCT HIGHLIGHTS 1. Supports data rates up to 1.65 Gbps, enabling 1080p HDMI formats and UXGA (1600 × 1200) DVI resolutions. 2. Input cable equalizer enables use of long cables at the input (more than 20 meters of 24 AWG cable at 1080p). 3. Auxiliary switch routes a DDC bus and two additional signals for a single-chip, HDMI 1.2a receive-compliant solution. |
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