WT8048N4 Просмотр технического описания (PDF) - Weltrend Semiconductor

Номер в каталоге

Компоненты Описание

Список матч

WT8048N4

DPMS (Display Power Management Signaling) Detector for Green Monitor

Weltrend Semiconductor 

eltrend

WT8048

APPLICATION DESCRIPTION

DPMS (Display Power Management Signaling) Dection

As per DPMS proposal WT8048 provides Monitor Power Management Detection Circuit for

the convenience of monitor designers in designing power saving minitors, or the so called

"Green Monitors". Please refer to the table 1 as below for power states defined in the DPMS.

DPMS requires at least 5 seconds delay before transition from ON state to any power saving

state, to avoid unintentionally entering a power saving state during display resoultion changes

and timing mode changes. And it can be done instaneously, for the transition between any

power saving state.

State

On

Stand-By

Suspend

Off

Table 1 Display Power Management Summary

Signals

DPMS

Power

Horizontal Vertical

Video

Compliance

Requirement

Savings

Pulse

Pulses Active Mandatory None

No Pulses Pulses Blanked

Pulse No Pulses Blanked

No Pulses No Pulses Blanked

Optional

Mandatory

Mandatory

Minimal

Substantial

Maximum

Recovery

Time

Not

Applicable

Short

Longer

System

Dependent

* "No Pulse" represents the frequency of Hsin or Vsin less than or equal to 10Hz,

but "Pulses" represents that frequency of Hsin greater than or equal to 15KHz

(WT8048), 10KHz (WT8048N1 / N2 / N3 / N4) and Vsin greater than or equal

to 40Hz.

6

Share Link: