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PME# Question



Hi Experts,

the PCI Power Management Spec. Rev. 1.1 says on page 28, that 
"Because a PCI bus RST# does not necessarily clear all functions' PME Context 
(functions that support PME# from D3cold), the system software is required to 
explicitly initialize all PME Context, including the PME support bits, for all 
functions during initial operating system load."
The PME Status and PME Enable bits are defined as "Sticky bit, indeterminate
at time of initial operating system boot if function supports PME# from D3cold"

Does that mean that for a device supporting PME# from D3cold PME#, the PME 
Status bit and the PME Enable bit are definitely allowed to have no asynchronous 
reset (e.g. power on reset)?
(They definitely must be resettable by configuration cycles and must not be 
reset by PCI bus RST#)

Could somebody please clarify this.


Thanks in advance,

Lukas Reinbold

-------------------------------------------------------------

SysKonnect GmbH             Lukas Reinbold           
                            Senior Hardware Engineer          

Siemensstr. 23              Phone   +49 72 43 502 335
76275 Ettlingen             Fax     +49 72 43 502 365
Germany                     Internet lreinbold@syskonnect.de

S y s K o n n e c t    -    The Server Connectivity Company
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