A Product Line of

Diodes Incorporated

PI2DPX2020

9

www.diodes.com

July 2022

Diodes Incorporated

PI2DPX2020

Document Number DS43506 Rev 5-2

Power Down

Mode

D3 Power Saving

Mode

Standby Mode

Active Mode

EN or POR# low

Power-up

EN or

POR# low

Enter D3

Aux Cmd

HPD low

for >tHPD

HPD low

for >tHPD

HPD high

Aux link

training

started

Exit D3

Aux Cmd

EN or

POR# low

EN and

POR# high

Figure 2. DisplayPort Operation Modes

DisplayPort Main Link

The electrical sub-block of a DP Main-Link consists of up to four differential pairs. The DP TX drives doubly terminated, AC-coupled

differential pairs in a manner compliant with the Main-Link Transmitter electrical specification.

Table 2. Description of DP Operating Mode

PM_State

Mode

Description

1

Power Down Mode Lowest power consumption (most circuitries are off); all outputs are high-impedance; All

inputs are ignored. AUX listener is turned OFF.

2

Standby Mode

Low power consumption (AUX listener is OFF); Main Link outputs are disabled

3

Active Mode

Data transfer (normal operation);

AUX listener is active. The AUX listener is actively monitoring for Link Training unless it is

disabled through I2C interface. After power-up and in active mode, all Main Link outputs are

enabled.

4

D3 Power Saving Mode Low power consumption(AUX listener is active); Main Link outputs are disabled