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44409
Rev.
1.70
October 10
AMD SP5100 Databook
Functional Description
53
Power State
Functional Characteristics
Wake-up Characteristics (Associated Enables
must be Set)
D3hot
•
EHCI shall preserve PCI
configuration
•
EHCI shall preserve USB
configuration
•
Hardware masks functional
interrupts
•
All ports are disabled or suspended
•
Resume detected on suspended port
•
Connect or Disconnect detected on port
•
Over Current detected on port
D3cold
•
PME Context in PCI Configuration
space is preserved
•
Wake Context in EHCI Memory
•
Space is preserved
•
All ports are disabled or suspended
•
Resume detected on suspended port
•
Connect or Disconnect detected on port
•
Over Current detected on port
8.2
SMI#/SCI Generation
Certain system events are routable between SMI# and SCI. When an event is routed to SMI#, an SMI#
assertion message will be sent by the SP5100 to the processor and it will enter SMM space. The SMI
status remains active until the EOS bit is set. When the EOS is set, SMI# de-assertion message will be
sent to the processor for at least 4 PCICLK cycles. If the event is routed to SCI, then BIOS can route it to
any of the legacy interrupts (except IRQ8) or INT21 in the case of IOAPIC.
Table 8-3: Causes of SMI# and SCI
Cause
SCI
SMI
Additional Enable
Where reported
SMI Command port
Yes
Yes
PM x0E, bit 2
PM x0F, bit 2
SERR# port
Yes
Yes
PCI config x64, bit 16
PCI config x04, bit 30;
PM x0F, bit 1
GBLRLS written to
Yes
Yes
PM x0E, bit 0
PM x0F ,bit 0
PM Timer1
Yes
Yes
PM x00, bit 1;
PM x08, x09, x0A
PM x01, bit 1
PM x00, bit 4 is written 1
Yes
Yes
PM x00, bit 4
PM x01, bit 4
IRQ[15:8] activity
Yes
Yes
PM x02
PM x05
IRQ[7:0] activity
Yes
Yes
PM x03
PM x06
Legacy IO activity
Yes
Yes
PM x04
PM x07
IO activity
Yes
Yes
PM x1C, PM xA8
PM x1D, PM xA9
Temperature Warning
Yes
Yes
XC50/C51, index x03, bit 1
XC50/C51, index x02, bit 1
Temperature Warning
(this input can generate
SMI# through this set of
register)
Yes
Yes
AcpiGpe0Blk, index 00, bit 9
AcpiGpe0Blk, index 04, bit 9
GEVENT/GPM inputs
Yes
Yes
AcpiGpe0Blk, index 00, bits
[7:0] for GEVENT, bits [29, 28,
26, 25, 22:19] for GPM
AcpiGpe0Blk, index 04, same
bits
USB SMI#
Yes
Yes
AcpiGpe0Blk, index 00, bit 8
AcpiGpe0Blk, index 04, bit 8;
PM x0F, bit 5
SMBus SMI#
Yes
Yes
AcpiGpe0Blk, index 00, bit 8
AcpiGpe0Blk, index 04, bit 8;
PM x0F, bit 4
HDAudio wake
Yes
Yes
AcpiGpe0Blk, index 00, bit 27
–
USB wake
Yes
Yes
AcpiGpe0Blk, index 00, bit 11
AcpiGpe0Blk, index 04, bit 11
RTC
Yes
Yes
RTC_STS
RTC_EN
ACPI timer
Yes
Yes
TMR_STS
TMR_EN
GBL_STS
Yes
Yes
GBL_STS
GBL_EN
PowerButton
Yes
Yes
PWRBTN_STS
PWRBTN_EN