82801CA Datasheet, PDF (14/521 Pages) Intel Corporation – I/O Controller Hub 3-S (ICH3-S)

9.1.18 PIRQ[n]_ROUT—PIRQ[E,F,G,H] Routing Control Register
(LPC I/F—D31:F0) .......................................................................... 284
9.1.19 D31_ERR_CFG—Device 31 Error Configuration Register
(LPC I/F—D31:F0) .......................................................................... 284
9.1.20 D31_ERR_STS—Device 31 Error Status Register
(LPC I/F—D31:F0) .......................................................................... 285
9.1.21 PCI_DMA_CFG—PCI DMA Configuration Register
(LPC I/F—D31:F0) .......................................................................... 285
9.1.22 GEN_CNTL—General Control Register (LPC I/F—D31:F0) .......... 286
9.1.23 GEN_STA—General Status Register (LPC I/F—D31:F0) .............. 288
9.1.24 RTC_CONF—RTC Configuration Register (LPC I/F—D31:F0)...... 289
9.1.25 COM_DEC—LPC I/F Communication Port Decode Ranges
Register (LPC I/F—D31:F0)............................................................ 289
9.1.26 FDD/LPT_DEC—LPC I/F FDD & LPT Decode Ranges
Register (LPC I/F—D31:F0)............................................................ 290
9.1.27 SND_DEC—LPC I/F Sound Decode Ranges Register
(LPC I/F—D31:F0) .......................................................................... 290
9.1.28 FWH_DEC_EN1—FWH Decode Enable 1 Register
(LPC I/F—D31:F0) .......................................................................... 291
9.1.29 GEN1_DEC—LPC I/F Generic Decode Range 1 Register
(LPC I/F—D31:F0) .......................................................................... 292
9.1.30 LPC_EN—LPC I/F Enables Register (LPC I/F—D31:F0)............... 292
9.1.31 FWH_SEL1—FWH Select 1 Register (LPC I/F—D31:F0).............. 294
9.1.32 GEN2_DEC—LPC I/F Generic Decode Range 2 Register
(LPC I/F—D31:F0) .......................................................................... 295
9.1.33 FWH_SEL2—FWH Select 2 Register (LPC I/F—D31:F0).............. 295
9.1.34 FWH_DEC_EN2—FWH Decode Enable 2 Register
(LPC I/F—D31:F0) .......................................................................... 296
9.1.35 FUNC_DIS—Function Disable Register (LPC I/F—D31:F0) .......... 297
9.2 DMA I/O Registers....................................................................................... 298
9.2.1 DMABASE_CA—DMA Base and Current Address Registers ........ 299
9.2.2 DMABASE_CC—DMA Base and Current Count Registers............ 300
9.2.3 DMAMEM_LP—DMA Memory Low Page Registers ...................... 300
9.2.4 DMACMD—DMA Command Register ............................................ 301
9.2.5 DMASTA—DMA Status Register.................................................... 301
9.2.6 DMA_WRSMSK—DMA Write Single Mask Register...................... 302
9.2.7 DMACH_MODE—DMA Channel Mode Register............................ 302
9.2.8 DMA Clear Byte Pointer Register ................................................... 303
9.2.9 DMA Master Clear Register ............................................................ 303
9.2.10 DMA_CLMSK—DMA Clear Mask Register .................................... 303
9.2.11 DMA_WRMSK—DMA Write All Mask Register .............................. 304
9.3 Timer I/O Registers...................................................................................... 305
9.3.1 TCW—Timer Control Word Register .............................................. 305
9.3.1.1 RDBK_CMD—Read Back Command ............................. 306
9.3.1.2 LTCH_CMD—Counter Latch Command ......................... 306
9.3.2 SBYTE_FMT—Interval Timer Status Byte Format Register ........... 307
9.3.3 Counter Access Ports Register....................................................... 307
9.4 Intel^® 8259 Interrupt Controller (PIC) Registers .......................................... 308
9.4.1 Interrupt Controller I/O MAP ........................................................... 308
9.4.2 ICW1—Initialization Command Word 1 Register ............................ 309
9.4.3 ICW2—Initialization Command Word 2 Register ............................ 310
14
Intel^® 82801CA ICH3-S Datasheet