Adaptec 1737100 Programmer Manual - Page 95

Type: R/W, Internal Registers Subgroup: PCI Functional Registers, Byte Address: 54h - 57h

Page 95 highlights

Register Descriptions Table 7-31. Power Management Register (Continued) Reset Bit(s) rw Value Description/Function 18:16 r 1h PMVersion: This field indicates that there are 4 bytes of General Purpose Power Management registers implemented as described in revision 1.0 of the 'PCI Bus Power Management Interface Specification'. 15:8 r 00h NextItemPtr: This field provides an offset into the function's PCI configuration space pointing to the location of next item in the function's capability list. The AIC-6915 does not implement more items in the list. 7:0 r 01h PowerManagementId: This ID indicates the start of the Power Management Register Block PMCSR (Power Management Control/Status) Register Type: R/W Internal Registers Subgroup: PCI Functional Registers Byte Address: 54h - 57h Bit(s) 31:29 23:16 15 14:13 12:9 8 7:2 1:0 Table 7-32. Power Management Control Status Register Reset rw Value Description/Function r 0 PMData: This function is not implemented. The AIC-6915 does not provide information about the power it consumes. r 0 Reserved: Always read as 0. r/w 0 PmeStatus: This bit is set when the function would normally assert the PME_ signal independent of the state of the PMEEN bit. Setting this bit clears it and causes the function to stop asserting a PME_. Clearing the bit has no effect. r 0 DataScale: This function is not implemented. The AIC-6915 does not provide information about the power it consumes. r 0 DataSelect: This function is not implemented. The AIC-6915 does not provide information about the power it consumes. r/w 0 PmeEn: This bit enables the function to assert PME_. If this bit is cleared assertion of PME_ is disabled. r 0 Reserved: Always read as 0. r/w PowerState: This 2-bit field determines the power state of the AIC-6915 '00' - D0 '01' - D1 '10' - D2 '11' - D3 Reset Value: In CardBus mode, (when the EPROM A0 pin is sampled low at reset), the PowerState starts at D3. Otherwise, it starts at D0. 7-23

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190

7-23
Register Descriptions
PMCSR (Power Management Control/Status) Register
Type: R/W
Internal Registers Subgroup: PCI Functional Registers
Byte Address: 54h - 57h
18:16
r
1h
PMVersion
: This field indicates that there are 4 bytes of General
Purpose Power Management registers implemented as described in
revision 1.0 of the ‘PCI Bus Power Management Interface
Specification’.
15:8
r
00h
NextItemPtr:
This field provides an offset into the function’s PCI
configuration space pointing to the location of next item in the
function’s capability list. The AIC-6915 does not implement more
items in the list.
7:0
r
01h
PowerManagementId
: This ID indicates the start of the Power
Management Register Block
Table 7-32. Power Management Control Status Register
Bit(s)
rw
Reset
Value
Description/Function
31:29
r
0
PMData:
This function is not implemented. The AIC-6915 does not
provide information about the power it consumes.
23:16
r
0
Reserved:
Always read as 0.
15
r/w
0
PmeStatus:
This bit is set when the function would normally assert
the
PME_
signal independent of the state of the
P
ME
E
N
bit. Setting
this bit clears it and causes the function to stop asserting a
PME_
.
Clearing the bit has no effect.
14:13
r
0
DataScale:
This function is not implemented. The AIC-6915 does
not provide information about the power it consumes.
12:9
r
0
DataSelect:
This function is not implemented. The AIC-6915 does
not provide information about the power it consumes.
8
r/w
0
PmeEn:
This bit enables the function to assert
PME_
. If this bit is
cleared assertion of
PME_
is disabled.
7:2
r
0
Reserved:
Always read as 0.
1:0
r/w
PowerState
: This 2-bit field determines the power state of the
AIC-6915
00
’ - D0
01
’ - D1
10
’ - D2
11
’ - D3
Reset Value:
In CardBus mode, (when the EPROM A0 pin is
sampled low at reset), the PowerState starts at D3. Otherwise, it
starts at D0.
Table 7-31. Power Management Register
(Continued)
Bit(s)
rw
Reset
Value
Description/Function