wt8048 ETC-unknow, wt8048 Datasheet - Page 6

• Manufacturer Part Number: wt8048
• Description: Dpms Display Power Management Signaling Detector For Green Monitor
• Manufacturer: ETC-unknow

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.
Stand-By
Suspend
State
* "No Pulse" represents the frequency of Hsin or Vsin less than or equal to 10Hz,
Off
On
eltrend
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.
Horizontal
No Pulses
No Pulses
Pulse
Pulse
Table 1 Display Power Management Summary
No Pulses
No Pulses
Vertical
Signals
Pulses
Pulses
Blanked
Blanked
Blanked
Active
Video
Requirement
Compliance
Mandatory
Mandatory
Mandatory
Optional
DPMS
Substantial
Maximum
Minimal
Savings
Power
None
WT8048
Dependent
Applicable
Recovery
Longer
System
Short
Time
Not
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