PCT1789W DATA SHEET
PRELIMINARY
PCT789T-A PCI CONFIGURATION REGISTERS
!!
Power Management Control/Status
(44h, R, R/W)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
PMESTS
0
0
0
0
0
0
PMEEN
0
0
0
0
0
0
PMST[1:0]
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit Definitions:
Bits
31:16
Name
Description
Reserved
PMESTS
Reserved. Read returns zero.
15
PME# status (R/W-clear: default 0b). Set when an event causes PME# to be
asserted independent of the state of PMEEN bit. Writing a 1 to this bit clears it
and deasserts the PME# signal if enabled. Writing a 0 has no effect. Since the
PC-TEL HSP modem module supports PME# from D3cold, this bit must be
explicitly cleared by the OS each time it is initially loaded.
14:9
8
Reserved
PMEEN
Reserved. Read returns zero.
PME# enable (R/W: default 0b). When set, enables PME# to be asserted. Other-
wise PME# assertion is disabled. Since the PC-TEL HSP modem module sup-
ports PME# from D3cold, this bit must be explicitly cleared by the OS each time it
is initially loaded.
7:2
1:0
Reserved
Reserved. Read returns zero.
PMST[1:0]
Power state (R/W: default 11b). Used to determine the current power state of the
PC-TEL HSP modem module and to set it into a new power state. Supported
field values are shown below. Software attempts to write an unsupported state to
this field have no effect.
PMST[1:0]
Power State
00
01
10
11
D0
D1 (not defined)
D2
D3hot
PRELIMINARY
PC-TEL, Inc.
35
1789W0DOCDAT06A-0299
ETC [ ETC ]
