w83977atg Winbond Electronics Corp America, w83977atg Datasheet - Page 6

• Manufacturer Part Number: w83977atg
• Description: W83877tf Plus Kbc, Gp I/o, Wake-up, Fir, Cir, Pb-free
• Manufacturer: Winbond Electronics Corp America

9.
10. GENERAL PURPOSE I/O ........................................................................................................... 103
11. PLUG AND PLAY CONFIGURATION......................................................................................... 109
12. ACPI REGISTERS FEATURES .................................................................................................. 112
8.4
8.5
9.1
9.2
9.3
9.4
9.5
10.1 Basic I/O functions ............................................................................................................ 105
10.2 Alternate I/O Functions...................................................................................................... 107
11.1 Compatible PnP................................................................................................................. 109
11.2 Configuration Sequence.................................................................................................... 110
12.1 SMI to SCI/SCI to SMI and Bus Master ............................................................................ 113
12.2 Power Management Timer ................................................................................................ 114
12.3 ACPI Registers (ACPIRs).................................................................................................. 115
KEYBOARD CONTROLLER ......................................................................................................... 98
8.3.16
Extension FDD Mode (EXTFDD) ........................................................................................ 97
Extension 2FDD Mode (EXT2FDD) .................................................................................... 97
Output Buffer ....................................................................................................................... 98
Input Buffer .......................................................................................................................... 98
Status Register .................................................................................................................... 99
Commands .......................................................................................................................... 99
HARDWARE GATEA20/KEYBOARD RESET CONTROL LOGIC ................................... 101
9.5.1
9.5.2
10.2.1
10.2.2
10.2.3
10.2.4
10.2.5
11.1.1
11.1.2
11.1.3
12.3.1
12.3.2
12.3.3
12.3.4
12.3.5
12.3.6
12.3.7
12.3.8
12.3.9
12.3.10 Power Management 1 Timer 2 (PM1TMR2) .......................................................................120
12.3.11 Power Management 1 Timer 3 (PM1TMR3) .......................................................................121
12.3.12 Power Management 1 Timer 4 (PM1TMR4) .......................................................................121
Programmed I/O (NON-DMA) Mode.....................................................................................97
KB Control Register (Logic Device 5, CR-F0).....................................................................101
Port 92 Control Register (Default Value = 0x24) ................................................................102
Interrupt Steering................................................................................................................107
Watch Dog Timer Output....................................................................................................108
Power LED .........................................................................................................................108
General Purpose Address Decoder....................................................................................108
General Purpose Write Strobe ...........................................................................................108
Extended Function Registers..............................................................................................109
Extended Functions Enable Registers (EFERs) .................................................................110
Extended Function Index Registers (EFIRs), Extended Function Data Registers (EFDRs)110
Power Management 1 Status Register 1 (PM1STS1) ........................................................115
Power Management 1 Status Register 2 (PM1STS2) ........................................................116
Power Management 1 Enable Register 1(PM1EN1)...........................................................117
Power Management 1 Enable Register 2 (PM1EN2)..........................................................117
Power Management 1 Control Register 1 (PM1CTL1) .......................................................118
Power Management 1 Control Register 2 (PM1CTL2) .......................................................118
Power Management 1 Control Register 3 (PM1CTL3) .......................................................119
Power Management 1 Control Register 4 (PM1CTL4) .......................................................119
Power Management 1 Timer 1 (PM1TMR1) .......................................................................120
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W83977ATF/W83977ATG
Publication Release Date: May 2006
Revision 0.6