1 Features
• AC-coupled or DC-coupled input and output
supporting HDMI 2.1 data rates up to 12 Gbps
– Backwards compatible to HDMI 1.4b and HDMI
2.0b
– HDMI 2.1 fixed rate link (FRL) of 3, 6, 8, 10,
and 12 Gbps
– Supports HDMI 2.1 three and four lane FRL
• Optimized for HDMI source applications
• Programmable receiver equalizer up to 12 dB at 6
GHz
• I2C or pin strap programmable
• Integrated HPD level shifter supporting both 1.8-V
and 3.3-V LVCMOS levels
• Integrated DDC buffer supporting as low as 1.2-V
levels
• Full lane swap on main lanes
• Digital display control (DDC) snooping function for
link configuration
• Low power consumption:
– 12G FRL four lanes active limited: 575 mW
– 12 G FRL four lanes active linear: 220 mW
– Powerdown: 0.6 mW
• Available in commercial and industrial temperature
• Single 3.3-V power supply
• 40-pin, 0.4 mm pitch, 4 mm × 6 mm, WQFN
package

2 Applications
• Notebooks and desktops
• TV
• Home theater and entertainment
• Gaming systems
• Docking stations
• Pro audio, video, and signage

3 Description
The TDP1204 is an HDMI 2.1 redriver supporting
data rates up to 12 Gbps. It is backwards compatible
for HDMI 1.4b and HDMI 2.0b. The high-speed
differential inputs and outputs can either be ACcoupled
or DC-coupled, which qualifies the TDP1204
to be used as a DP++ to HDMI level shifter or HDMI
redriver. The TDP1204 can support both 3 and 4 lane
HDMI 2.1 FRL at 3, 6, 8, 10, and 12-Gbps.
The TDP1204 is a hybrid redriver supporting both
source and sink applications. A hybrid redriver can
operate either in a linear or limited redriver function.
When configured as a limited redriver, the TDP1204
differential output voltage levels are independent
of the graphics process unit (GPU) output levels
ensuring HDMI compliant levels at the receptacle.
The limited redriver mode is recommended for HDMI
source applications. When configured as a linear
redriver, the TDP1204 differential output levels are
a linear function of the GPU output levels enabling
TDP1204 to be transparent to link training and
operate as a channel shortener. Linear redriver mode
is recommended for HDMI sink applications.
The TDP1204 has an integrated HPD level shifter.
The HPD level shifter will shift the 5-V HPD signal
to either 1.8-V or 3.3-V. The level shifter output can
also be configured for push, pull, or open-drain. Also
integrated in the TDP1204 is a Digital Display Control
(DDC) buffer. The DDC buffer offers capacitance
isolation and level shifters 5-V DDC levels to 3.3-V,
1.8-V, or 1.2-V levels. The integration of the level
shifter eliminates discrete solutions and thereby saves
system cost.
The TDP1204 supports single power supply rails
of 3.3-V on VCC and is offered in a commercial
temperature (TDP1204) and industrial temperature
(TDP1204I).