SDAA178 October 2025 TDP20MB421
This schematic checklist provides a brief explanation of each TDP20MB421 device pin and the recommended configuration of TDP20MB421 device pins for default operation. The TDP20MB421 is a DisplayPort? (DP) linear redriver with an integrated 2:1 MUX. The device complies with the VESA DisplayPort standard Version 1.4, 2.0, and 2.1; and supports a 1-4 lane Main Link interface signaling up to UHBR20 (20Gbps per lane). Additionally, this device is position independent. The TDP20MB421 can be placed inside source, cable, or sink, effectively providing a negative loss component to the overall link budget. The TDP20MB421 has the ability to be configured via GPIO or the SMBus/I2C bus. This document is intended to aid design at the system level for general applications, but must not be the only resource used. In addition to this list, use the information in the TDP20MB421 DisplayPort 2.1 24Gbps 4-Channel Linear Redriver with 2:1 MUX, and associated documents to gain a full understanding of device functionality.