AD8192 Datasheet, PDF (1/28 Pages) Analog Devices – 2:1 HDMI/DVI Switch with Equalization and DDC/CEC Buffers

2:1 HDMI/DVI Switch with
Equalization and DDC/CEC Buffers
AD8192
FEATURES
2 inputs, 1 output HDMI/DVI links
HDMI 1.3a receive and transmit compliant
±7 kV HBM ESD on HDMI input pins
4 TMDS channels per link
Supports 250 Mbps to 2.25 Gbps data rates and beyond
Supports 25 MHz to 225 MHz pixel clocks and beyond
Fully buffered unidirectional inputs/outputs
Switchable 50 Ω on-chip input terminations with
programmable or automatic control on channel switch
Equalized inputs and pre-emphasized outputs
Low added jitter
Output disable feature for reduced power dissipation
Switched output termination for building of larger arrays
Bidirectional and cascadable DDC buffers (SDA/SCL)
DDC bus logic level translation (3.3 V, 5 V)
Bidirectional and cascadable CEC buffer with integrated
pull-up resistors (27 kΩ)
Hot plug detect pulse low on channel switch
Standards compatible: DVI, HDMI 1.3a, HDCP, I²C
Serial (I²C slave) control interface
56-lead, 8 mm × 8 mm LFCSP, RoHS-compliant package
APPLICATIONS
Front panel buffer for advanced television (HDTV) sets
Standalone HDMI switcher
Multiple input displays
Projectors
A/V receivers
Set-top boxes
GENERAL DESCRIPTION
The AD8192 is a complete HDMI™/DVI link switch featuring
equalized TMDS inputs and pre-emphasized TMDS outputs
ideal for systems with long cable runs. The TMDS outputs can
be set to a high impedance state to reduce the power dissipation
and/or allow the construction of larger arrays using the wire-
OR technique. The AD8192 includes bidirectional buffering for
the DDC bus and CEC line, with integrated pull-up resistors for
the CEC line. The AD8192 is available in a space-saving, 56-lead
LFCSP surface-mount, lead-free plastic package specified to
operate over the −40°C to +85°C temperature range.
I2C_SDA
I2C_SCL
I2C_ADDR
VTTI
IP_A[3:0]
IN_A[3:0]
IP_B[3:0]
IN_B[3:0]
VTTI
DDC_A[1:0]
DDC_B[1:0]
FUNCTIONAL BLOCK DIAGRAM
RESET
SERIAL INTERFACE
CONFIG
INTERFACE
CONTROL
LOGIC
AD8192
AVCC
DVCC
AMUXVCC
AVEE
DVEE
VREF_AB
VREF_COM
4
4
EQ
4
4
SWITCH
CORE
4
PE
4
HIGH SPEED
BUFFERED
VTTO
+ _OP[3:0]
– ON[3:0]
2
SWITCH
2
CORE
2
DDC_COM[1:0]
CEC_I/O
HPD_A
HPD_B
LOW SPEED
BUFFERED
BIDIRECTIONAL
CEC_O/I
DVEE
Figure 1.
SET-TOP BOX
TYPICAL APPLICATION
HDTV SET
HDMI
RECEIVER
DVD PLAYER
AD8192
Figure 2. Typical Application for HDTV Sets
PRODUCT HIGHLIGHTS
1. Fully HDMI 1.3a transmit and receive compliant.
2. Supports data rates up to 2.25 Gbps, enabling greater than
1080p HDMI formats with deep color (12-bit) and UXGA
(1600 × 1200) DVI resolutions.
3. Input cable equalizer enables use of long cables; more than
20 m (24 AWG) at data rates up to 2.25 Gbps.
4. Auxiliary switch isolates and buffers the DDC bus and the
CEC line, improving total system capacitance limit.
5. Hot plug detect (HPD) signal is pulsed low on link switch.
6. Manually or automatically switched input terminations.
Rev. 0
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