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 sink applications

• Adaptive and fixed 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

• Full lane swap on main lanes

• Integrated fan-out buffer for applications which

require separate clock and data paths

• Signal detect output indicator

• 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

– Power down: 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 TMDS1204 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 AC-coupled or DC-coupled, which qualifies the

TMDS1204 to be used as a DP++ to HDMI level

shifter or HDMI redriver. The TMDS1204 can support

both 3 and 4 lane HDMI 2.1 FRL at 3, 6, 8, 10, and

12-Gbps.

The TMDS1204 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 TMDS1204

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 TMDS1204 differential output levels are

a linear function of the GPU output levels enabling

TMDS1204 to be transparent to link training and

operate as a channel shortener. Linear redriver mode

is recommended for HDMI sink applications.

The TMDS1204 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.

The integration of the level shifter eliminates discrete

solutions and thereby saves system cost.

The TMDS1204 supports single power supply rails

of 3.3-V on VCC and is offered in a commercial

temperature (TMDS1204) and industrial temperature

(TMDS1204I).