82801BA Datasheet, PDF (15/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

9.4.5 ICW3—Slave Controller Initialization Command Word 3
Register..........................................................................................9-36
9.4.6 ICW4—Initialization Command Word 4 Register ...........................9-36
9.4.7 OCW1—Operational Control Word 1 (Interrupt Mask) Register ....9-36
9.4.8 OCW2—Operational Control Word 2 Register ..............................9-37
9.4.9 OCW3—Operational Control Word 3 Register ..............................9-38
9.4.10 ELCR1—Master Controller Edge/Level Triggered Register ..........9-39
9.4.11 ELCR2—Slave Controller Edge/Level Triggered Register ............9-40
9.5 Advanced Interrupt Controller (APIC) .........................................................9-41
9.5.1 APIC Register Map ........................................................................9-41
9.5.2 IND—Index Register ......................................................................9-41
9.5.3 DAT—Data Register ......................................................................9-42
9.5.4 IRQPA—IRQ Pin Assertion Register .............................................9-42
9.5.5 EOIR—EOI Register ......................................................................9-43
9.5.6 ID—Identification Register .............................................................9-43
9.5.7 VER—Version Register .................................................................9-44
9.5.8 ARBID—Arbitration ID Register .....................................................9-44
9.5.9 BOOT_CONFIG—Boot Configuration Register .............................9-44
9.5.10 Redirection Table...........................................................................9-45
9.6 Real Time Clock Registers .........................................................................9-47
9.6.1 I/O Register Address Map..............................................................9-47
9.6.2 Indexed Registers ..........................................................................9-47
9.6.2.1 RTC_REGA—Register A................................................9-48
9.6.2.2 RTC_REGB—Register B (General Configuration) .........9-49
9.6.2.3 RTC_REGC—Register C (Flag Register) ......................9-50
9.6.2.4 RTC_REGD—Register D (Flag Register) ......................9-50
9.7 Processor Interface Registers.....................................................................9-51
9.7.1 NMI_SC—NMI Status and Control Register ..................................9-51
9.7.2 NMI_EN—NMI Enable (and Real Time Clock Index) ....................9-52
9.7.3 PORT92—Fast A20 and Init Register............................................9-52
9.7.4 COPROC_ERR—Coprocessor Error Register ..............................9-52
9.7.5 RST_CNT—Reset Control Register ..............................................9-53
9.8 Power Management Registers (D31:F0) ....................................................9-54
9.8.1 Power Management PCI Configuration Registers (D31:F0) ..........9-54
9.8.1.1 GEN_PMCON_1—General PM Configuration 1
Register (PM—D31:F0) ..................................................9-54
9.8.1.2 GEN_PMCON_2—General PM Configuration 2
Register (PM—D31:F0) ..................................................9-56
9.8.1.3 GEN_PMCON_3—General PM Configuration 3
Register (PM—D31:F0) ..................................................9-57
9.8.1.4 GPI_ROUT—GPI Routing Control Register
(PM—D31:F0) ................................................................9-57
9.8.1.5 TRP_FWD_EN—IO Monitor Trap Forwarding
Enable Register (PM—D31:F0)......................................9-58
9.8.1.6 MON[n]_TRP_RNG—I/O Monitor [4:7] Trap Range
Register for Devices 4–7 (PM—D31:F0) ........................9-59
9.8.1.7 MON_TRP_MSK—I/O Monitor Trap Range Mask
Register for Devices 4–7 (PM—D31:F0) ........................9-59
9.8.2 APM I/O Decode ............................................................................9-60
9.8.2.1 APM_CNT—Advanced Power Management
Control Port Register ......................................................9-60
9.8.2.2 APM_STS—Advanced Power Management
Status Port Register .......................................................9-60
82801BA ICH2 and 82801BAM ICH2-M Datasheet
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