Appendix E ATI RAGE IIC Graphics Card
Compaq Personal Computers
Original - March 1998
E-6
E.5
POWER MANAGEMENT
E.5.1 MONITOR CONTROL
This controller provides monitor power control for monitors that conform to the VESA display
power management signaling (DPMS) protocol. This protocol defines different power
consumption conditions and uses the HSYNC and VSYNC signals to select a monitor’s power
condition. Table E-5 lists the monitor power conditions.
Table E–5.
Monitor Power Management Conditions
Table E-5.
Monitor Power Management Conditions
HSYNC VSYNC Power Mode Description
Active Active On Monitor is completely powered up. If activated, the inactivity
counter counts down during system inactivity and if allowed to
tiemout, generates an SMI to initiate the Suspend mode.
Active Inactive Suspend Monitor’s high voltage section is turned off and CRT heater
(filament) voltage is reduced from 6.6 to 4.4 VDC. The Off mode
inactivity timer counts down from the preset value and if allowed to
timeout, another SMI is generated and serviced, resulting in the
monitor being placed into the Off mode. Wake up from Suspend
mode is typically a few seconds.
Inactive Inactive Off Monitor’s high voltage section and heater circuitry is turned off.
Wake up from Off mode is a little longer than from Suspend.
E.5.2 POWER CONSUMPTION
The ATI RAGE IIC graphics card is EPA-Energy Star compliant. The normal power
consumption is as follows:
Maximum current draw @ 3.3 VDC: 1 A
Maximum current draw @ 5.0 VDC: 250 mA
Total maximum power consumption: 4 watts
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