Intel E3815 FH8065301567411 Ficha De Dados
Códigos do produto
FH8065301567411
Power Management
Intel
®
Atom™ Processor E3800 Product Family
94
Datasheet
6.3.6.3
Intel
®
Automatic Display Brightness
The Intel
Automatic Display Brightness feature dynamically adjusts the backlight
brightness based upon the current ambient light environment. This feature requires an
additional sensor to be on the panel front. The sensor receives the changing ambient
light conditions and sends the interrupts to the Intel Graphics driver. As per the change
in Lux, (current ambient light illuminance), the new backlight setting can be adjusted
through BLC. The converse applies for a brightly lit environment. Intel Automatic
Display Brightness increases the back light setting.
additional sensor to be on the panel front. The sensor receives the changing ambient
light conditions and sends the interrupts to the Intel Graphics driver. As per the change
in Lux, (current ambient light illuminance), the new backlight setting can be adjusted
through BLC. The converse applies for a brightly lit environment. Intel Automatic
Display Brightness increases the back light setting.
6.3.6.4
Intel
®
Seamless Display Refresh Rate Switching Technology (Intel
®
SDRRS Technology)
When a Local Flat Panel (LFP) supports multiple refresh rates, the Intel
®
Display
Refresh Rate Switching power conservation feature can be enabled. The higher refresh
rate will be used when on plugged in power or when the end user has not selected/
enabled this feature. The graphics software will automatically switch to a lower refresh
rate for maximum battery life when the design application is on battery power and
when the user has selected/enabled this feature.
rate will be used when on plugged in power or when the end user has not selected/
enabled this feature. The graphics software will automatically switch to a lower refresh
rate for maximum battery life when the design application is on battery power and
when the user has selected/enabled this feature.
There are two distinct implementations of Intel SDRRS—static and seamless. The static
Intel SDRRS method uses a mode change to assign the new refresh rate. The seamless
Intel SDRRS method is able to accomplish the refresh rate assignment without a mode
change and therefore does not experience some of the visual artifacts associated with
the mode change (SetMode) method.
Intel SDRRS method uses a mode change to assign the new refresh rate. The seamless
Intel SDRRS method is able to accomplish the refresh rate assignment without a mode
change and therefore does not experience some of the visual artifacts associated with
the mode change (SetMode) method.
6.4
Memory Controller Power Management
The main memory is power managed during normal operation and in low-power ACPI
Cx states.
Cx states.
6.4.1
Disabling Unused System Memory Outputs
Any system memory (SM) interface signal that goes to a memory module connector in
which it is not connected to any actual memory devices (such as DIMM connector is
unpopulated, or is single-sided) is tri-stated. The benefits of disabling unused SM
signals are:
which it is not connected to any actual memory devices (such as DIMM connector is
unpopulated, or is single-sided) is tri-stated. The benefits of disabling unused SM
signals are:
•
Reduced power consumption.
•
Reduced possible overshoot/undershoot signal quality issues seen by the processor
I/O buffer receivers caused by reflections from potentially un-terminated
transmission lines.
I/O buffer receivers caused by reflections from potentially un-terminated
transmission lines.
When a given rank is not populated, the corresponding chip select and CKE signals are
not driven.
not driven.
At reset, all rows must be assumed to be populated, until it can be proven that they are
not populated. This is due to the fact that when CKE is tristated with an SO-DIMM
present, the DIMM is not guaranteed to maintain data integrity.
not populated. This is due to the fact that when CKE is tristated with an SO-DIMM
present, the DIMM is not guaranteed to maintain data integrity.