PCI9080 datasheet(2/133 Pages) ETC

2 / 133 page

TABLE OF CONTENTS

©PLX Technology, Inc., 1997

Page ii

Version 0.93

TABLE OF CONTENTS

1. GENERAL DESCRIPTION .......................................................................................................................................... 1

1.1 APPLICATIONS FOR THE PCI 9080...................................................................................................................... 2

1.1.1 PCI Adapter Cards ........................................................................................................................................... 2

1.1.2 Embedded Systems ......................................................................................................................................... 2

1.2 MAJOR FEATURES ............................................................................................................................................... 3

1.3 COMPATIBILITY OF PCI 9080 WITH PCI 9060, 9060ES, AND 9060SD ................................................................ 4

1.3.1 Pin Compatibility............................................................................................................................................... 4

1.3.2 Register Compatibility....................................................................................................................................... 4

1.4 COMPARISON OF PCI 9060, PCI 9060ES, PCI 9060SD, AND PCI 9080 .............................................................. 5

2. BUS OPERATION ....................................................................................................................................................... 6

2.1 PCI BUS CYCLES .................................................................................................................................................. 6

2.1.1 PCI Target Command Codes............................................................................................................................ 6

2.1.2 PCI Master Command Codes ........................................................................................................................... 6

2.1.2.1 DMA Master Command Codes.................................................................................................................................... 6

2.1.2.2 Direct Local to PCI Command Codes.......................................................................................................................... 6

2.2 LOCAL BUS CYCLES ............................................................................................................................................ 7

2.2.1 Local Bus Direct Master.................................................................................................................................... 7

2.2.2 Local Bus Direct Slave...................................................................................................................................... 7

2.2.2.1 Ready/Wait State Control ........................................................................................................................................... 7

2.2.2.2 Burst Mode and Continuous Burst Mode (BTERM “Burst Terminate” Mode)................................................................. 7

2.2.2.2.1 Burst Mode .......................................................................................................................................................... 7

2.2.2.2.2 Continuous Burst Mode (BTERM# “Burst Terminate” Mode) ................................................................................. 7

2.2.2.2.3 Partial Lword Accesses ........................................................................................................................................ 7

2.2.2.3 Recovery States.......................................................................................................................................................... 8

2.2.2.4 Local Bus Read Accesses........................................................................................................................................... 8

2.2.2.5 Local Bus Write Accesses........................................................................................................................................... 8

2.2.2.6 Direct Slave Write Accesses—8- and 16-Bit Buses ..................................................................................................... 8

2.2.2.7 Local Bus Data Parity ................................................................................................................................................. 8

2.2.2.8 Local Bus Little/Big Endian ......................................................................................................................................... 8

2.2.2.8.1 32 Bit Local Bus—Big Endian Mode ..................................................................................................................... 8

2.2.2.8.2 16 Bit Local Bus—Big Endian Mode ..................................................................................................................... 8

2.2.2.8.3 8 Bit Local Bus—Big Endian Mode ....................................................................................................................... 9

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