Specifications

Table Of Contents
3.2.4.2 PCIe® Gen1 Enablement
On designs where BACO functionality is required, the SBIOS has to enable PCIe®
Gen1 that is required to support BACO; otherwise the dGPU cannot enter into BACO
mode.
The following table outlines the requirements of the
BIOS.
Table 3–1 BIOS Requirements
ATPX Function 1 ATPX Function 2
Enable PCIe Gen1 in
a SBIOS
Enable BACO
in a dGPU
VBIOS
Fixed Scheme NOT
Supported
Set Bit 9 to 1
Fixed Scheme
Supported
Set Bit 9 to 0 Required
BACO Mode under
the Dynamic Scheme
Set Bit 7 to 1 Required Required
dGPU Power Off
under the Dynamic
Scheme
Set Bit 7 to 1
Set Bit 10 to 1
Required
3.2.5 User interfaces
3.2.5.1 Switchable Graphics Scheme Options
On designs where both fixed and dynamic schemes are supported, the user can select
the fixed or dynamic scheme from the scheme switch UI found in
Catalyst™ Control Center as shown in the following figures.
18 Interfaces and Requirements
Muxless Switchable Graphics Technology PX5.0 Functional Specification
137-41940-10
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