February, 2007
PEX 8532 PCI Express Power Management Support
Table 10-2. Supported PCI Express Power Management Capabilities (Cont.)
Register
Supported
Description
Offset
Bit(s)
Yes
No
Slot Capabilities (for Downstream Ports) (Cont.)
Power Indicator Present
0 = Power Indicator is not implemented
✔
4
1 = Power Indicator is implemented on the slot chassis of the corresponding
PEX 8532 downstream port
Do not change for upstream port.
Hot Plug Surprise
0 = No device in the corresponding PEX 8532 downstream port slot is removed
from the system without prior notification
1 = Device in the corresponding PEX 8532 downstream port slot can be removed
from the system without prior notification
5
✔
Do not change for upstream port.
Hot Plug Capable
0 = Corresponding PEX 8532 downstream port slot is not capable of supporting
Hot Plug operations
1 = Corresponding PEX 8532 downstream port slot is capable of supporting
Hot Plug operations
✔
✔
6
7Ch
Do not change for upstream port.
Slot Power Limit Value
The maximum power available from the corresponding PEX 8532 downstream port
is determined by multiplying the value in this field (expressed in decimal; 25d = 19h)
by the value specified by the Slot Power Limit Scale field.
14:7
Do not change for upstream port.
Slot Power Limit Scale
The maximum power available from the corresponding PEX 8532 downstream port
is determined by multiplying the value in this field by the Slot Power Limit Value field.
00b = 1.0x
01b = 0.1x
✔
16:15
10b = 0.01x
11b = 0.001x
Do not change for upstream port.
ExpressLane PEX 8532AA/BA/BB/BC 8-Port/32-Lane Versatile PCI Express Switch Data Book
Copyright © 2007 by PLX Technology, Inc. All Rights Reserved – Version 1.6
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