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Texas Instruments PCI445X Interrupt Signaling Interface, Miscellaneous Signals, Suspend, Spkrout

Models: PCI445X

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1.3.3Interrupt Signaling Interface

System Implementation

If the third ZV source is not implemented, ZVPCLK and ZVSTAT are not required. To support ZV audio, an audio codec device is required for L and R sound decoding.

1.3.3Interrupt Signaling Interface

Serialized Interrupt Interface

The serialized interrupt (ISA and PCI) interface is a single-line interface, IRQSER. A pullup resistor is required on this terminal. The signal is synchronous to PCLK, so PCLK is a required signal. Please remember that SUSPEND gates PCLK internally. Usually this signal is connected to the south bridge (ex., PIIX4). The IRQSER signal is sharable with other devices.

Parallel PCI Interrupt

See Section 1.2.2, PCI Bus Interface.

1.3.4Miscellaneous Signals

1.3.4.1SUSPEND

The SUSPEND signal gates the PRST and G_RST signals from the PCI445X device. SUSPEND also gates PCLK inside the PCI445X device in order to minimize power consumption. Gating PCLK makes the IRQSER state machine stop until SUSPEND is deasserted. Two requirements for implementing suspend mode are that the PCI bus must not be parked on the PCI445X device and IRQSER signaling is not proceeding when SUSPEND is asserted.

1.3.4.2RI_OUT and PME

RI_OUT can be programmed on the RI_OUT/PME or MFUNC7 terminal. PME can be programmed only on the RI_OUT/PME terminal. To support both RI_OUT and PME in a system, the RI_OUT/PME terminal must be programmed as PME. These signals are usually connected to the south bridge (ex., PIIX4) or an embedded controller (EC). Buffers of the RI_OUT/PME type are open-drain; therefore, a pullup resistor is required on this terminal.

1.3.4.3SPKROUT

SPKROUT is a dedicated terminal and it is usually mixed to PC sound, and connected to a sound device.

1.3.4.4Activity LEDs

Activity LEDs can be programmed on MFUNC terminals. These signals are active-high and driven for 64 ms duration.

1.3.4.5Distributed DMA (DDMA)

The PCI445X device supports both PC/PCI (centralized) DMA and a distributed DMA slave engine for 16-bit PC Card DMA support.

PCI445X Device

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Texas Instruments PCI445X Interrupt Signaling Interface, Miscellaneous Signals, Serialized Interrupt Interface, Suspend

Contents

Implementation Guide PCI Bus SolutionsAugust SCPU007IMPORTANT NOTICE Read This First How to Use This ManualAbout This Manual Notational ConventionsLALK 16±bit constant , shift asect ªsection nameº, addressbyte value1 , ... , valuen C csr ±a /user/ti/simuboard/utilitiesOHCI.Lynx Configuration Information Application Report, SLLA077 PCI4450 GFN/GJG PC Card and OHCI Controller Data Sheet, SCPS046TSB41LV03A Data Sheet, SLLS364 Related Documentation From Texas InstrumentsPage Contents A Global Reset Only Bits, PME Context Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 1±1 Typical System Architecture 1±2 Serialized Interrupt Signal Figures1±3 EEPROM 2-Wire Interface 1±4 TPS22X6 Power Switch Interface 1±5 Example of a ZV Interface 1±6 Distributed DMA Signal ConnectionTables Chapter PCI445X DevicePage TopicFigure 1±1. Typical System Architecture 1.1.3 PME and RI Signaling 1.1 System Features Selection1.1.1 Package Types 1.1.2 GRST and PRST1.1.9 Optional PCI Signals 1.1.7 Socket Power Switches1.1.6 PCI and ISA Style Interrupt 1.1.8 Distributed DMA DDMA1.1.10 Socket Activity LEDs Figure 1±2. Serialized Interrupt Signal1.1.11 MFUNC7±MFUNC0 Terminal Assignments 1.1.12 Miscellaneous Functions Description1.1.12.6 Power Savings Mode 1.1.12.4 CardBus Reserved Terminal Signaling1.1.12.3 Asynchronous CSC Interrupt Generation 1.1.12.5 Memory Burst R/W Operation Control1.1.12.9 SMI 1.1.12.10 Socket Power Lock1.1.12.11VCC Protection 1.1.12.12 ZV Port Control and Auto Detect Function1.2.1 Clamping Rails 1.2 System Implementation1.2.2 PCI Bus Interface PCLK, AD31±AD0, C/BE3±C/BE0, PAR, DEVSEL, FRAME, STOPINTA, INTB, and INTC PRST PCI reset and GRST Global resetCLKRUN Note Pullup Resistor RequirementsFigure 1±3. EEPROM 2-Wire Interface 1.2.4 2-Wire I2C Interface for EEPROMSocket power supply 1.2.3 PC Card InterfaceRegister Offset Table 1±1. Registers and Bits Loadable Through Serial EEPROMRegister Bits Loaded FromFollowing is an example EEPROM data file used with the PCI445X device 1.3 Sample PCI445X EEPROM Data File1D 0xFF 1E 0xFF 1F 0xFF Figure 1±4. TPS22X6 Power Switch Interface 1.3.1 P2C Interface for TPS22X6 Power Switch1.3.2 Zoomed Video ZV Interface Figure 1±5. Example of a ZV Interface1.3.4 Miscellaneous Signals 1.3.3 Interrupt Signaling InterfaceSerialized Interrupt Interface Parallel PCI Interrupt1.3.5 Requirement of Pullup/Pulldown Resistors Figure 1±6. Distributed DMA Signal ConnectionTable 1±2. PC Card Interface Pullup Resistor List² ³ System ImplementationTable 1±4. Miscellaneous Terminals Pullup Resistor List Table 1±3. PCI Bus Interface Pullup Resistor ListSignal Table 1±5. Required Pullup/Pulldown ResistorsPulldown Default System ImplementationCommand register PCI offset 04h 16-bit 1.4 BIOS ConsiderationsLatency timer PCI offset 0Dh 8-bit CardBus latency timer register PCI offset 1Bh 8-bit1.4.2 System Sleeping State Consideration Power management control/status register PCI offset A4h 16-bit1.4.1.2 PCI TI Proprietary Registers Initialization 1 SUSPEND1.4.3 Docking System Consideration 2 Register save/restore1.5 Important Information 1.5.4 Socket Power Control1.5.1 GRST Clamping Rail 1.5.2 PME/RIOUT Bit DefinitionTopic Appendix AGlobal Reset Only Bits, PME Context Bits PageTable A±1.Global Reset Only Cleared Bits A.1 Global Reset Only Bits/PME Context BitsTable A±2.PME Context Bits Page Appendix B PME and RI BehaviorTopic PageTable B±2.16-Bit Card RI/STSCHG and Wake-Up Signals Truth Table Table B±1.CardBus CTSCHG and Wake-Up Signals Truth TableB.1 PME and RI Behavior Appendix C PCI445X Buffer TypesTopic PageTable C±1. PCI445X Terminal Function Assignment and Buffer Types PCI445X Buffer TypesPCI445X Buffer Types Signal Name Signal NamePCI445X Buffer Types TerminalSignal Name Signal NamePCI445X Buffer Types TerminalSignal Name Signal NamePCI445X Buffer Types TerminalSignal Name Signal NamePCI445X Buffer Types TerminalPCI445X Buffer Types Table C±2. Buffer Type AbbreviationsBuffer Type Description