The PI3HDX12221 is a 2-to-1 active mux switch for 4-channel HDMI link with data rate up to 12Gbps for HDMI2.1 standard. It provides the maximum equalizer gain controls up to +11dB (HDMI2.1 @ 6GHz) and +7dB (HDMI2.0 @ 3GHz) to compensate the insertion loss along the channel connection.
The non-blocking linear RedriverTM design ensures the differential signals conveying pre-shoot and de-emphasis equalization waveforms to be transparently transmitted from source side to the receiver side and linearly compensate the channel loss to achieve longer channel extension. The CTLE equalizers are implemented at the inputs of the Redriver to reduce the ISI jitters and compensate channel loss. The programmable flat gain and output linearity adjustments support the eye diagram opening adjustment.
With the combinational logic control design, the device has reduced the control pins to achieve more compact package dimension. Users can use pin strap method to select different EQ gains, flat gains and output swing linearity for flexible design tuning.
2-to-1 Mux Switch Configuration for 4-channel HDMI Operation
Support HDMI 2.1, HDMI 2.0 and HDMI 1.4 signal speeds
Quad-level pin strap control through combinational logic table for equalizer gain value selection
Quad-level pin strap control for flat gain and output swing linearity selection
Input signal detection for automatic power saving operation