7.2.1.3 Application Curves

The TDP2004-Q1 is a linear redriver that can be used to extend channel reach of a DP link. The redriver

can help to pass compliance by removing ISI deterministic jitter at data rates up to 20Gbps (UHBR20) for

DP2.1. Figure 7-3 - Figure 7-6 shows a typical DP 2.1 Tx compliance channel setup along with compliance Eye

Diagrams at TP3_EQ with or without redriver. The comparison of eye diagrams show that TDP2004-Q1 can

provide signal conditioning by extending horizontal and vertical eye openings that makes a failing eye to pass.

SOC

TP2

Keysight

Scope

DP 2.1

compliance

(Worst case

cable loss +

Ref. Rx EQ)

TP3_EQ

Eye without

redriver

AMD Radeon

7900XT GPU

Figure 7-3. A Typical 20Gbps (UHBR20) DP 2.1 Tx

Compliance Channel Setup With No Redriver

SOC

TP2

Keysight

Scope

DP 2.1

compliance

(Worst case

cable loss +

Ref. Rx EQ)

TP3_EQ

Eye with

redriver

AMD Radeon

7900XT GPU

+8dB loss +

equaliza on

TI EVB

Figure 7-4. A Typical 20Gbps (UHBR20) DP 2.1 Tx

Compliance Channel Setup With Redriver

Figure 7-5. DP 2.1 Tx Compliance Eye Diagram at

TP3_EQ With No Redriver

Figure 7-6. DP 2.1 Tx Compliance Eye Diagram at

TP3_EQ With TDP2004-Q1 for Signal Conditioning

7.2.2 USB-C Cross Point Mux with Signal Conditioner

The TDP2004-Q1 is a linear redriver with integrated cross-point mux. The device can be used to account

for USB Type-C plug orientation as well as providing signal conditioing for DisplayPort mainlink signals. The

TDP2004-Q1 can be used in both source and sink applications as illustrated in Figure 7-7. Using the SEL pin,

typically driven by a USB PD controller in a system, the 4 channel signal paths can be configured as straight

connection or cross connections as illustrated.

Note

The TDP2004-Q1 can only be used in USB-C applications where USB superspeed pins are used for

DP alternate mode and USB3.x functionality is not required.

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TDP2004-Q1

SNLS787 – SEPTEMBER 2025

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