Datasheet iii
Networking Silicon — 82546GB
Contents
1.0 Introduction.........................................................................................................................1
1.1 Document Scope...................................................................................................2
1.2 Reference Documents...........................................................................................2
1.3 Product Codes.......................................................................................................3
2.0 Additional 82546GB Features ............................................................................................5
2.1 PCI ........................................................................................................................5
2.2 MAC ......................................................................................................................5
2.3 PHY.......................................................................................................................5
2.4 Host Offloading......................................................................................................6
2.5 Manageability ........................................................................................................6
2.6 Device ...................................................................................................................7
2.7 Technology............................................................................................................7
3.0 Signal Descriptions.............................................................................................................8
3.1 Signal Type Definitions..........................................................................................8
3.2 PCI Bus Interface ..................................................................................................8
3.2.1 PCI Address, Data and Control Signals ...................................................9
3.2.2 Arbitration Signals ..................................................................................10
3.2.3 Interrupt Signals .....................................................................................10
3.2.4 System Signals.......................................................................................11
3.2.5 Error Reporting Signals ..........................................................................11
3.2.6 Power Management Signals ..................................................................11
3.2.7 Impedance Compensation Signals.........................................................12
3.2.8 SMB Signals...........................................................................................12
3.3 EEPROM Interface Signals.................................................................................12
3.4 Flash Interface Signals........................................................................................13
3.5 Miscellaneous Signals.........................................................................................13
3.5.1 LED Signals............................................................................................13
3.5.2 Software Definable Signals ....................................................................13
3.6 PHY Signals ........................................................................................................14
3.6.1 Crystal Signals .......................................................................................14
3.6.2 PHY Analog Signals...............................................................................14
3.7 Serializer / Deserializer Signals...........................................................................15
3.8 JTAG Test Interface Signals ...............................................................................16
3.9 Power Supply Connections .................................................................................16
3.9.1 Power Support Signals...........................................................................16
3.9.2 Digital Supplies.......................................................................................16
3.9.3 Analog Supplies .....................................................................................16
3.9.4 Ground and No Connects.......................................................................17
4.0 Test Port Functionality......................................................................................................18
4.1 XOR Testing........................................................................................................18
4.1.1 XOR Tree Control and Operation...........................................................18
4.1.2 Pins Tested ............................................................................................19
4.2 Tristate Mode ......................................................................................................20
4.2.1 Tristate Mode Control and Operation .....................................................20