Table 6-2. Flat Gain Configuration Settings (continued)

Pin mode: GAIN

I2C Mode: flat_gain_2:0

Datapath Flat Gain

L3

7

+2.6dB

6.3.3 Cross Point

The TDP2004-Q1 provides 2x2 cross-point function. Using pin SEL pin the 4 channel signal paths can be

configured as straight connection or cross connections as shown in Figure 6-1.

RX0

RX1

TX0

TX1

RX2

RX3

TX2

TX3

SEL=L

(Ch 0-3)

RX0

RX1

TX0

TX1

RX2

RX3

TX2

TX3

SEL=H

(Ch 0-3)

Figure 6-1. Signal Flow Diagram for Cross-Point Mux Operation

6.4 Device Functional Modes

6.4.1 Active Mode

The device is in normal operation. In this mode, the TDP2004-Q1 redrives and equalizes video mainlink signals

to provide better signal integrity.

6.4.2 Standby Mode

The device is in standby mode invoked by PD = H. In this mode, the device is in standby mode conserving

power.

6.5 Programming

6.5.1 Pin mode

The TDP2004-Q1 can be fully configured through pin-strap pins. In this mode the device uses 2-level and 5-level

pins for device control and signal integrity optimum settings.

6.5.1.1 Five-Level Control Inputs

The TDP2004-Q1 has 5-level input pins that are used to control the configuration of the device. These 5-level

inputs use a resistor divider to help set the 5 valid levels and provide a wider range of control settings. External

resistors must be of 10% tolerance or better. The 5-level pins except MODE are sampled at powerup only. The

MODE pin can be exercised at device power up or in normal operation mode.

Table 6-3. 5-Level Control Pin Settings

LEVEL

SETTING

L0

1kΩ to GND

L1

8.25kΩ to GND

L2

24.9kΩ to GND

L3

75kΩ to GND

L4

F (Float)

TDP2004-Q1

SNLS787 – SEPTEMBER 2025

www.ti.com

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