AD8197A_07 Datasheet, PDF (1/28 Pages) Analog Devices – 4:1 HDMI/DVI Switch with Equalization

4:1 HDMI/DVI Switch with Equalization
AD8197A
FEATURES
4 inputs, 1 output HDMI/DVI link
Enables HDMI 1.3-compliant receiver
Pin-to-pin compatible with the AD8191A
4 TMDS channels per link
Supports 250 Mbps to 2.25 Gbps data rates
Supports 25 MHz to 225 MHz pixel clocks
Equalized inputs for operation with long HDMI cables
(20 meters at 2.25 Gbps)
Fully buffered unidirectional inputs/outputs
Globally switchable, 50 Ω on-chip terminations
Pre-emphasized outputs
Low added jitter
Single-supply operation (3.3 V)
4 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 2 additional signals
Output disable feature
Reduced power dissipation
Removable output termination
Allows building of larger arrays
2 AD8197A devices support HDMI/DVI dual-link
Standards compatible: HDMI receiver, HDCP, DVI
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 AD8197A 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 AD8197A is provided in a 100-lead LQFP, Pb-free, surface-
mount package, specified to operate over the −40°C to +85°C
temperature range.
FUNCTIONAL BLOCK DIAGRAM
PARALLEL
SERIAL
2
2
I2C_SDA
I2C_SCL
I2C_ADDR[2:0]
3
VTTI
CONFIG
INTERFACE
RESET
CONTROL
LOGIC
AD8197A
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] _–
4
4
4
4
4
4 _EQ
4
4
4
SWITCH
CORE
4
PE
HIGH SPEED BUFFERED
VTTO
+ _OP[3:0]
– ^ON[3:0]
VTTI
AUX_A[3:0]
AUX_B[3:0]
AUX_C[3:0]
AUX_D[3:0]
4
4
4
SWITCH
CORE
4
4
LOW SPEED UNBUFFERED
BIDIRECTIONAL
AUX_COM[3:0]
Figure 1.
TYPICAL APPLICATION
MEDIA CENTER
HDTV SET
GAME CONSOLE
SET-TOP BOX
HDMI
RECEIVER
AD8197A
DVD PLAYER
04:20
Figure 2. Typical HDTV Application
PRODUCT HIGHLIGHTS
1. Supports data rates up to 2.25 Gbps, enabling 1080p deep
color (12-bit color) HDMI formats, and greater than
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 2.25 Gbps).
3. Auxiliary switch routes a DDC bus and two additional signals
for a single-chip, HDMI 1.3 receive-compliant solution.
Rev. 0
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