4

PS8928D

11/03/10

PI3VDP612

High Bandwidth 6-differential channel, 1:2 Demux

for DisplayPortTM rev 1.1a Signal Switching

Application Example for single mode DP support

Truth Table (SEL control)

Function

SEL

Port A is active

L

Port B is active

H

Notebook

DISPLAY

PORT

DISPLAY

DOCKING

CONNECTOR

HPD

5-Differential

LED

HPD

LED

LED

Driver

HPD

+

-

GND/3.3V

100kΩ

x2

GND/3.3V

100kΩ

x2

1.2V Max Vswing

Min Vswing

0V

Vbias_Tx

50

Ω

50

Ω

Note: if the Max Vswing (in single-ended mode) of the signals to

PI3VDP612 exceeds 1.2V, then AC coupling capacitors are needed

between the 50ohm terminations and PI3VDP612.

+

-

Truth Table (Latch control)

LE

SEL

0

Responds to changes on SEL

1

Latched

AUX

Driver

DDC

Driver

Intel Chipset

CAB_DET

AUX/DDC

Dual Mode DP

PI3C3306

1Mohm

Dual

Mode

DP

Dual

Mode

DP

CAB_DET1

CAB_DET2

Dual Mode DP #1

Dual Mode DP #2

AUX/DDC #1

AUX/DDC #2

PI3VDP612

Application Example for Dual Mode Display Port Support

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