MB86613S Datasheet, PDF (99/134 Pages) Fujitsu Component Limited. – IEEE1394 Open HCI Controller

Preliminary
7.4. Power Management
The on- chip PCI bus interface supports the power management of the PCI Bus Power Management Interface
Specification (version 1.1).
The MB86613S LSI has a power management register in it as shown in the Figure 7- 9. The initial address of
the register is indicated on the Cap_ Ptr register in the PCI configuration register.
The next table shows the four states managed by this power management. Figure7- 10 shows the possible
transitions of the states.
When changing the state in D0, or D2, set the state in the PowerStatus field on the PMCSR register.
D0 : The PCI bus can perform a transfer in this state.
D2 : The clock cannot be provided for the inside circuits (can be provided partially) of the MB86613S.
1394 configuration ROM data is not hold. PCI configuration register and GUID register data are
hold. INT# is not aserted even cause a interrupt.
A 200us is needed for the sate transition from D2 to D0.
D3_hot : Set the HCControl.softReset bit for the sate transition from D3hot to D0.
The clock cannot provided for the inside circuits (can be provided partially) of the MB86613S.
1394 configuration ROM and PCI configuration register data are not hold. GUID register
data is hold. INT# is not aserted even cause a interrupt. An 10ms is needed for this sate
transition.
D3_cold : The clock and the power cannot be provided for the inside circuits of the MB86613S.
After starting to provide the power, assert the PCIRST#.
PME# is
set. The
asserted if
PME# can
it receives a
be negated
packet or
by setting
a bus
”1” at
rtehseePt _{MonCtSheR.DP2MoEr} D_s3t_{haottusstabtiet}
with the PMCSR. PME_en bit
or clearing the PME_en bit.
31
24 23
PMC
16 15
87
NextltemPtr
CapabilityID
0
00h
Data
PMCSR_BSE
PMCSR
04h
Fig. 7.9 Power Management Register
State
Power
Clock
#INT
PME#
--------- --------- --------- ----------- -------
D0
ON
ON
Enable
-
D2
ON
OFF
Disable
Enable
D3_hot
D3_cold
ON
OFF
OFF
OFF
Disable
Disable
Enable
Disable
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