ad8191a Analog Devices, Inc., ad8191a Datasheet
ad8191a
Manufacturer Part Number
ad8191a
Description
4 1 Hdmi/dvi Switch With Equalization
Manufacturer
Analog Devices, Inc.
Datasheet
1.AD8191A.pdf
(28 pages)
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FEATURES
4 inputs, one output HDMI/DVI link
Pin-to-pin compatible with the AD8197A
Output disable feature
Two AD8191As support HDMI/DVI dual link
Standards compatible: HDMI receiver, DVI, HDCP
Serial (I
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
GENERAL DESCRIPTION
The AD8191A is an 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 to allow
the construction of larger arrays using the wire-OR technique.
The AD8191A is provided in a 100-lead LQFP, Pb-free, surface-
mount package specified to operate over the −40°C to +85°C
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
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.
Trademarks and registered trademarks are the property of their respective owners.
4 TMDS channels per link
4 auxiliary channels per link
Reduced power dissipation
Removable output termination
Allows building of larger arrays
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
Fully buffered unidirectional inputs/outputs
Globally switchable, 50 Ω on-chip terminations
Pre-emphasized outputs
Low added jitter
Single-supply operation (3.3 V)
Bidirectional unbuffered inputs/outputs
Flexible supply operation (3.3 V to 5 V)
HDCP standard compatible
Allows switching of DDC bus and 2 additional signals
(20 meters at 1080p)
2
C slave) and parallel control interface
4:1 HDMI/DVI Switch with Equalization
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
I2C_ADDR[2:0]
PRODUCT HIGHLIGHTS
1. Supports data rates up to 1.65 Gbps, enabling 1080p HDMI
2. Input cable equalizer enables use of long cables at the input
3. Auxiliary switch routes a DDC bus and two additional
PARALLEL
AUX_A[3:0]
AUX_B[3:0]
AUX_C[3:0]
AUX_D[3:0]
formats and UXGA (1600 × 1200) DVI resolutions.
(more than 20 meters of 24 AWG cable at 1080p).
signals for a single-chip, HDMI 1.2a receive-compliant
solution.
SERIAL
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]
I2C_SDA
MEDIA CENTER
I2C_SCL
SET-TOP BOX
VTTI
VTTI
+
+
+
+
FUNCTIONAL BLOCK DIAGRAM
–
–
–
–
3
2
TYPICAL APPLICATION
Figure 2. Typical HDTV Application
INTERFACE
CONFIG
4
4
4
4
4
4
4
4
4
4
4
4
©2007 Analog Devices, Inc. All rights reserved.
HIGH SPEED
LOW SPEED UNBUFFERED
EQ
BIDIRECTIONAL
AD8191A
2
RECEIVER
Figure 1.
HDMI
CONTROL
HDTV SET
SWITCH
SWITCH
RESET
LOGIC
CORE
CORE
BUFFERED
PE
AD8191A
GAME CONSOLE
AD8191A
DVD PLAYER
4
4
4
www.analog.com
+
–
01:18
AVCC
DVCC
AMUXVCC
AVEE
DVEE
VTTO
OP[3:0]
ON[3:0]
AUX_COM[3:0]
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