ox16pci958 Oxford Electrical Products, ox16pci958 Datasheet - Page 14

• Manufacturer Part Number: ox16pci958
• Description: Octal Uart With Interface
• Manufacturer: Oxford Electrical Products

OXFORD SEMICONDUCTOR LTD.
The
register (PMCSR) has a mixture of read-only,
read/write and read/clear-on-write bits.
The Power Management Bridge Support
Extensions register at offset 46h is read-only,
and always returns the value 00h.
DS-0022 Nov 05
Bits
15
14:13
12:9
8
1:0
Power
Description
Set when the function would assert the
PME# signal if bit 8 is enabled. Writing
1 clears it & causes the function to stop
asserting PME#. Writing 0 has no
effect.
Cleared on PCI reset
Read-only scaling factor to be used
when interpreting the value of the
Power Management Data register. The
value and meaning of this field will
depend on which data value has been
selected using bits 12:9
Read/write field used to select which
data is to be reported through the Data
register & bits 14:13. Resets to 0
1—enables PME#
0—disables PME# (default)
Determines the current power state of a
function & sets it into a new power state
using the values below.
00b—D0
01b—D1
10b—D2
11b—D3
If software attempts to write an
unsupported, optional state to this field
(i.e. D1 when D1_Support is not set, or
D2 when D2_Support is not set), the
write operation completes normally on
the bus; however, the data is discarded
and no state change occurs.
Reset value 00b
Management
Control/Status
External—Free Release
The Power Management Data register at
offset 47h is read-only, and returns a value
which depends on which data value has been
selected using PMCSR [12:9].
OX16PCI958 DATA SHEET
Page 14