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4:1 HDMI/DVI Switch with Equalization
AD8191
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 (I
2
C slave) and parallel control interface
100-lead, 14 mm × 14 mm LQFP, Pb-free package
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2006 Analog Devices, Inc. All rights reserved.
www.analog.com
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]
ON[3:0]
AUX_COM[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_D[3:0]
AUX_B[3:0]
AUX_A[3:0]
–
4
4
4
4
4
4
4
4
4
4
4
4
EQ
CORE
CORE
CLOGIC
ICONFIG
3
2
2
SERIAL
PARALLEL
P
P
P
P
P
P
RESET
PE
4
4
AD8191
0
Figure 1.
TYPICAL APPLICATION
DVD PLAYER
GAME CONSOLE
SET-TOP BOX
MEDIA CENTER
HDTV SET
HDMI
RECEIVER
AD8191
01:18
0
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.