AD8191 Datasheet, PDF (1/32 Pages) Analog Devices – 4:1 HDMI/DVI Switch with Equalization

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 (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
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.
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.
FUNCTIONAL BLOCK DIAGRAM
PARALLEL
SERIAL
2
2
I2C_SDA
I2C_SCL
I2C_ADDR[2:0]
3
VTTI
CONFIG
INTERFACE
RESET
CONTROL
LOGIC
AD8191
AVCC
DVCC
AMUXVCC
AVEE
DVEE
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] _–
VTTI
AUX_A[3:0]
AUX_B[3:0]
AUX_C[3:0]
AUX_D[3:0]
4
4
4
4
4
4 _EQ
4
4
4
SWITCH
CORE
4
PE
HIGH SPEED BUFFERED
VTTO
+ _OP[3:0]
– ^ON[3:0]
4
4
4
SWITCH
CORE
4
4
LOW SPEED UNBUFFERED
BIDIRECTIONAL
Figure 1.
AUX_COM[3:0]
TYPICAL APPLICATION
MEDIA CENTER
HDTV SET
GAME CONSOLE
SET-TOP BOX
HDMI
RECEIVER
AD8191
DVD PLAYER
01:18
Figure 2. Typical HDTV Application
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
Fax: [phone]
©2006 Analog Devices, Inc. All rights reserved.