Specifications
Table Of Contents
- Muxless Switchable Graphics Technology PX5.0 Functional Specification
- Contents
- Figures
- Tables
- Chapter 1 Introduction
- Chapter 2 Functional Description
- 2.1 Fixed Switchable Graphics Scheme
- 2.2 Dynamic Switchable Graphics Scheme
- 2.2.1 dGPU Power-Off
- 2.2.2 Extended Battery Mode
- 2.2.3 OEM Specific PX Application Profiles
- 2.2.3.1 Creating OEM XML with PX Application Profile Data
- 2.2.3.2 Generating an OEM Application Profile Blob File
- 2.2.3.3 Creating an Installation Package for Deploying the OEM Application Profile Blob File
- 2.2.3.4 Localizing the Installation Package with Orca.exe
- 2.2.3.5 Generating a New Product Code for the OEM Application Profile Installation Package
- 2.2.3.6 Integrating the OEM Application Profile Installation Package into the AMD Driver Installer
- 2.2.4 OpenGL Support on the dGPU
- 2.2.5 Support on the dGPU
- 2.2.6 Various Integrated Graphics Vendor Components Installation
- Chapter 3 Interfaces and Requirements
- 3.1 OEM Specific PX Application Profiles
- 3.2 Software Interfaces and Requirements
- Index
• 3D, OpenGL, and video-playback applications run on the fGPU/iGPU or dGPU
depending on the application profile.
• If an application does not have a profile, the application runs on the
default
rendering GPU.
• The end-user can edit application profiles.
• When the last application rendering on the dGPU ends, the dGPU is fully
powered off on PX5.0 designs or put into BACO mode on PX4.0 designs.
Muxless Switchable Graphics technology PX5.0 includes the following capabilities
under the dynamic mode.
• dGPU power-off
• Extended battery mode
• OEM specific PX application profiles
• OpenGL support on the dGPU
• OpenCL™ support on the dGPU
• Various integrated graphics vendor components
installation
2.2.1 dGPU Power-Off
PX5.0 introduces Dynamic-zero technology in addition to BACO (Bus Alive Chip Off).
Dynamic-zero allows the system to turn off the dGPU when the dGPU is idle.
BACO functionality can still be enabled for PX4.0 compliance, but is not necessary
for PX5.0-only enabled systems.
On designs where both dGPU power-off and BACO mode are enabled, dGPU power-
off takes precedence over BACO.
When the last application that is rendering on the dGPU ends, the dGPU will be
powered off by Dynamic-zero technology.
2.2.1.1 Hardware Requirement
• In order to turn off the dGPU, dGPU power-down hardware implementation is
required.
• On designs where BACO functionality is required, BACO hardware circuitry
needs to be implemented.
Details are found in dGPU Power-down Implementation (for the Dynamic-zero or the
Fixed Scheme).
2.2.1.2 SBIOS Requirement
• SBIOS ATPX function 2 (Power Control) is required to fully power off the dGPU
under the dynamic scheme.
• Bit 7 in SBIOS ATPX function 1 (Get AMD PowerXpress Parameters) is used to
indicate whether the dynamic scheme is supported on the platform. Setting it
to 1 indicates that the dynamic scheme is supported.
6 Functional Description
Muxless Switchable Graphics Technology PX5.0 Functional Specification
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© 2011 Advanced Micro Devices, Inc.
Proprietary and Confidential - Do not duplicate.