Specifications
2012 Advanced Micro Devices, Inc.
ACPI/SMBUS Controller (bus-0, dev-20, fun-0)
AMD SP5100 Register Programming Requirements
Page 19
2.20 PCIe
Native Mode
ASIC Rev Register Settings Function/Comment
All Revs SP5100
PM_IO 0x55 [3]
Set to 1 to enable PCIe
native mode.
If PCIe is in Native mode: set the bit to 1.
If PCIe is not in Native mode: set the bit to 0.
PM_IO 0x10 [6]
Set to 1 to make PCIE_WAK_DIS visible in ACPI Pm1a
register group.
If PCIe is in Native mode: set the bit to 1.
If PCIe is not in Native mode: set the bit to 0.
PM_IO 0x55 [4]
Set to 0 to enable PCIE_WAK_DIS/PCIE_WAK_STS
function.
If PCIe is in Native mode: set the bit to 0.
If PCIe is not in Native mode: set the bit to 1.
PM_IO 0x55 [5] = 1 Set to 1 to force the non-generation of SCI when seeing
PCIe wake event. Set the bit to 1 all the time.
PM_IO 0x84 [0] = 0
PM_IO 0x84 [1] = 0
Generate SCI interrupt in PCIe legacy mode when wake#
is asserted.
PM_IO 0xD7 [6] = 1 Mask off the input of PCIE_Wak_Sts if PCIE_WAK_DIS is
1. Set the bit to 1 all the time.
PM_IO 0xD7 [1] = 1 Routes PME_message from NB to the input of
PCIE_Wak_Sts. Set the bit to 1 all the time.
Suggested settings:
WinXP
Vista (Legacy mode)
Vista (Native mode)
PM_IO 0x55[3] 0 0 1
PM_IO 0x10[6]
0
1
1
PM_IO 0x55[4] 1 0 0
PM_IO 0x55[5] 1 1 1
PM_IO 0x84[0]
1
1
1
PM_IO 0x84[1] 0 0 0
PM_IO 0xD7[6] 1 1 1
PM_IO 0xD7[7]
1
1
1
SATA
USB
SMBUS
PATA
AC97
HD AUDIO
LPC
PCI
For register details refer to
the sections check-marked
in the SP5100 Register
Reference Guide
RTC
ACPI
PM REG
A-LINK
I/O REG
XIOAPIC
X
2.21 Hardware Monitor
ASIC Rev Register Settings Function/Comment
All Revs SP5100 PM_IO 0xD7 [7] = 7 Set only if Hardware monitor is used for temperature
reading
SATA
USB
SMBUS
PATA
AC97
HD AUDIO
LPC
PCI
For register details refer to
the sections check-marked
in the SP5100 Register
Reference Guide
RTC
ACPI
PM REG
A-LINK
I/O REG
XIOAPIC
X