參數(shù)資料
型號(hào)： USS-344
英文描述： USS-344 QuadraBus Four-Host PCI-to-USB OpenHCL Host Controller
中文描述： 號(hào)，344 QuadraBus四主機(jī)的PCI到USB主機(jī)控制器OpenHCL
文件頁(yè)數(shù)： 44/54頁(yè)
文件大?。?/td> 850K
代理商： USS-344
44
Agere Systems Inc.
Advance Data Sheet, Rev. 9
June 2001
Four-Host PCI-to-USB OpenHCI Host Controller
USS-344
QuadraBus
Power Management Interface
(continued)
Configuration Space Offset 52h
Configuration Space Offset 54h
Table 132. Power Management Capabilities Register
Bits
Default
Value
01110b
Read/
Write
R
Name/Description
15:11
PME_Support.
Specifies the states in which the PME signal can be asserted.
XXXX0b—PME cannot be asserted in D0 state.
XXX1Xb—PME can be asserted in D1 state.
XX1XXb—PME can be asserted in D2 state.
X1XXXb—PME can be asserted in D3
hot
state.
0XXXXb—PME cannot be asserted in D3
cold
state.
D2_Support.
This device supports the D2 power management state.
D1_Support.
This device supports the D1 power management state.
Aux_Current.
PMEN generation is not supported by this function. Therefore,
this register is not applicable and returns 000b.
DSI.
No device specific initialization sequence is required before using this
device.
Reserved.
PME Clock.
No clocks are required for this device to issue PMEN.
Version.
PCI Power Management Interface Specification Revision 1.1 compli-
ant.
10
9
8:6
1b
1b
R
R
R
000b
5
0b
R
4
3
0b
0b
R
R
R
2:0
010b
Table 133. Power Management Control/Status Register
Bits
Default
Value
0b
Read/
Write
Read/
Write-
Clear
Name/Description
15
PME_Status.
This bit is set when the function would normally assert the
PMEN signal independent of the state of the PME_En bit.
Writing a 1b to this bit will clear the PME_Status bit and force the function to
stop asserting PMEN.
Data Scale.
Variable based upon data select. See Table 136.
14:13
See
Table 136
0000b
R
12:9
R/W
Data_Select.
The system uses this register to select the appropriate data for
reporting in the Data Scale register and Data register.
PME_En
. When active (1b), the function is enabled to assert PMEN.
Reserved.
Power_State.
Represents the current power state of the function.
8
0b
R/W
R
R/W
7:2
1:0
000000b
00b
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