Texas Instruments PCI445X manual Table C±2. Buffer Type Abbreviations, Buffer Type Description

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PCI445X Buffer Types

Table C±2. Buffer Type Abbreviations

Buffer Type	Description

I/O	Standard input/output

I	Standard input only

O	Standard output only

OD	Open drain

P	Power, GND, or clamp rail

STS	Sustained 3-state bidirectional. An active-low signal must be driven high for one cycle
	before deasserting.

TS	3-state bidirectional

TSO	3-state output only

PCI445X Buffer Types

C-7

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Contents Implementation Guide Important Notice About This Manual Read This FirstCsr ±a /user/ti/simuboard/utilities Related Documentation From Texas Instruments Page Contents Viii Figures Tables Topic PCI445X Device±1. Typical System Architecture System Features Selection Optional PCI Signals Socket Power SwitchesPCI and ISA Style Interrupt Distributed DMA DdmaMFUNC7±MFUNC0 Terminal Assignments Socket Activity LEDsMiscellaneous Functions Description Serialized Interrupt ControlPower Savings Mode CardBus Reserved Terminal SignalingAsynchronous CSC Interrupt Generation Memory Burst R/W Operation Control12.9 SMI Socket Power Lock12.11VCC Protection ZV Port Control and Auto Detect FunctionClamping Rails System ImplementationPCI Bus Interface PERR, SERR, and LockINTA, INTB, and Intc Prst PCI reset and Grst Global resetSocket power supply 4 2-Wire I2C Interface for EepromPC Card Interface Damping resistor on Cclk terminalEeprom ±1. Registers and Bits Loadable Through Serial EepromSample PCI445X Eeprom Data File System Implementation Zoomed Video ZV Interface 1 P2C Interface for TPS22X6 Power SwitchMiscellaneous Signals Interrupt Signaling Interface±2. PC Card Interface Pullup Resistor List² ³ Requirement of Pullup/Pulldown Resistors±4. Miscellaneous Terminals Pullup Resistor List ±3. PCI Bus Interface Pullup Resistor ListLPS ±5. Required Pullup/Pulldown ResistorsBios Considerations InitializationPCI Standard Registers Initialization PCI TI Proprietary Registers Initialization System Sleeping State ConsiderationDocking System Consideration Register save/restoreImportant Information Topic Global Reset Only Bits, PME Context BitsTable A±1.Global Reset Only Cleared Bits Global Reset Only Bits/PME Context BitsTable A±2.PME Context Bits Page PME and RI Behavior PME and RI Behavior Table B±1.CardBus Ctschg and Wake-Up Signals Truth TablePCI445X Buffer Types PCI445X Buffer Types Signal Name Terminal TypeACVS2 BCAD22 GND PHYDATA6 ZVUV4 TSO Buffer Type Description Table C±2. Buffer Type Abbreviations