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// USB Alt Modes

USB-C DisplayPort 1.4 Alt Mode

USB-C DisplayPort 1.4 Alt Mode repurposes the four SuperSpeed lane pairs to carry four DP 1.4 main link lanes, enabling 8K/60Hz, HDR10, DSC, and MST (multiple monitors) directly from a USB-C port.

// Specifications
Standard
VESA DisplayPort 1.4 Alt Mode
DP Version
DisplayPort 1.4 HBR3
Bandwidth
32.4 Gbps
Max Resolution
8K at 60Hz with DSC
Features
HDR HDR10 MST DSC
Lanes
4 DP main link lanes from USB-C SS pairs
// Pin Reference Table
Pin Name Function Type
A2 TX1+/ML0+ DP Main Link lane 0 positive BUS
A3 TX1-/ML0- DP Main Link lane 0 negative BUS
A10 RX2-/ML1- DP Main Link lane 1 negative BUS
A11 RX2+/ML1+ DP Main Link lane 1 positive BUS
B2 TX2+/ML2+ DP Main Link lane 2 positive BUS
B3 TX2-/ML2- DP Main Link lane 2 negative BUS
B10 RX1-/ML3- DP Main Link lane 3 negative BUS
B11 RX1+/ML3+ DP Main Link lane 3 positive BUS
A8 SBU1 DP AUX positive BUS
B8 SBU2 DP AUX negative BUS
A4 VBUS Power PWR
A5 CC1 Alt mode negotiation BUS