![](http://datasheet.mmic.net.cn/330000/INTEL82801_datasheet_16416407/INTEL82801_14.png)
xiv
82801AA and 82801AB
Datasheet
8.8.3
Power Management I/O Registers.................................................8-57
8.8.3.1
PM1_STS—Power Management 1 Status Register.......8-58
8.8.3.2
PM1_EN—Power Management 1 Enables Register......8-59
8.8.3.3
PM1_CNT—Power Management 1 Control ...................8-60
8.8.3.4
PM1_TMR—Power Management 1 Timer Register.......8-60
8.8.3.5
PROC_CNT—Processor Control Register.....................8-61
8.8.3.6
LV2 — Level 2 Register .................................................8-62
8.8.3.7
GPE0_STS—General Purpose Event 0 Status
Register..........................................................................8-62
8.8.3.8
GPE0_EN—General Purpose Event 0 Enables
Register..........................................................................8-63
8.8.3.9
GPE1_STS—General Purpose Event 1
Status Register...............................................................8-64
8.8.3.10 GPE1_EN—General Purpose Event 1
Enable Register..............................................................8-65
8.8.3.11 SMI_EN—SMI Control and Enable Register..................8-65
8.8.3.12 SMI_STS—SMI Status Register ....................................8-66
8.8.3.13 IOMON_STS_EN — I/O Monitor Status and
Enable Register..............................................................8-67
8.8.3.14 DEVACT_STS — Device Activity Status Register .........8-68
8.8.3.15 BUS_ADDR_TRACK— Bus Address Tracker ...............8-69
8.8.3.16 BUS_CYC_TRACK— Bus Cycle Tracker ......................8-69
System Management TCO Registers (D31:F0)..........................................8-70
8.9.1
TCO Register I/O Map...................................................................8-70
8.9.2
TCO1_RLD—TCO Timer Reload and Current Value....................8-70
8.9.3
TCO1_TMR—TCO Timer Initial Value...........................................8-70
8.9.4
TCO1_DAT_IN—TCO Data In Register ........................................8-71
8.9.5
TCO1_DAT_OUT—TCO Data Out Register..................................8-71
8.9.6
TCO1_STS—TCO1 Status Register..............................................8-71
8.9.7
TCO2_STS—TCO2 Status Register..............................................8-72
8.9.8
TCO1_CNT—TCO1 Control Register............................................8-73
8.9.9
TCO2_CNT—TCO2 Control Register............................................8-73
8.9.10 TCO_MESSAGE1 and TCO_MESSAGE2 Registers
(ICH 82801AA only).......................................................................8-74
8.9.11 TCO_WDSTATUS—TCO2 Control Register
(ICH 82801AA only).......................................................................8-74
General Purpose I/O Registers (D31:F0) ...................................................8-75
8.10.1 GPIO Register I/O Address Map....................................................8-78
8.10.2 GPIO_USE_SEL—GPIO Use Select Register ..............................8-79
8.10.3 GP_IO_SEL—GPIO Input/Output Select Register ........................8-80
8.10.4 GP_LVL—GPIO Level for Input or Output Register.......................8-81
8.10.5 GPO_TTL—GPIO TTL Select Register.........................................8-81
8.10.6 GPO_BLINK—GPO Blink Enable Register....................................8-82
8.10.7 GPI_INV—GPIO Signal Invert Register.........................................8-82
8.9
8.10