82C881 Datasheet, PDF (3/46 Pages) List of Unclassifed Manufacturers – FireLink 1394 OHCI Link Controller

FireLink 1394 OHCI
®
82C881
TABLE OF CONTENTS
1.0 FEATURES ......................................................................................................................................................................1
2.0 OVERVIEW ......................................................................................................................................................................1
3.0 SIGNAL DEFINITIONS ....................................................................................................................................................3
3.1 TERMINOLOGY/NOMENCLATURE CONVENTIONS..................................................................................................................3
3.2 NUMERICAL PIN CROSS-REFERENCE LIST .........................................................................................................................5
3.3 STRAPPING OPTIONS.......................................................................................................................................................6
3.3.1 Test Mode Selection (Pins 77, 78) .......................................................................................................................6
3.3.2 Serial EEPROM Presence Detect (Pin 5).............................................................................................................6
3.4 SIGNAL DESCRIPTIONS ....................................................................................................................................................7
3.4.1 PCI Bus Interface Signals.....................................................................................................................................7
3.4.2 PHY-Link Interface Signal Set ..............................................................................................................................9
3.4.3 Miscellaneous Signals ........................................................................................................................................10
4.0 FUNCTIONAL DESCRIPTION.......................................................................................................................................11
4.1 FUNCTIONAL BLOCK DESCRIPTION ..................................................................................................................................11
4.1.1 PCI Interface ......................................................................................................................................................11
4.1.2 DMA Control Block .............................................................................................................................................13
4.1.3 Serial EEPROM Interface...................................................................................................................................13
4.1.4 Arbiter.................................................................................................................................................................14
4.1.5 Register Block ....................................................................................................................................................14
4.1.6 FIFO Block .........................................................................................................................................................14
4.1.7 Link Block ...........................................................................................................................................................15
4.2 SERIAL EEPROM INTERFACE........................................................................................................................................16
4.2.1 Read Operations from the Serial EEPROM........................................................................................................16
4.2.2 Write operations to the Serial EEPROM.............................................................................................................16
4.2.3 Related PCICFG Registers ................................................................................................................................17
4.2.4 Serial EEPROM MAP .........................................................................................................................................18
5.0 REGISTER DESCRIPTIONS .........................................................................................................................................19
5.1 OHCI AND BUS MANAGEMENT CONTROL AND STATUS REGISTERS ....................................................................................19
5.2 FIFO CONFIGURATION REGISTERS .................................................................................................................................19
5.2.1 Tx FIFO-Related Registers.................................................................................................................................20
5.2.2 Rx FIFO-Related Registers ................................................................................................................................21
5.3 PCI CONFIGURATION REGISTERS ...................................................................................................................................23
912-2000-031
Revision: 1.0
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