Functional Description ..................................................................................................................... 10-117
FIFO Buffer Management and Endian Conversion .............................................................. 10-117
FIFO Advance Conditions ..................................................................................................... 10-117
Endian Conversion ............................................................................................................... 10-118
64-Bit Endian Conversion ..................................................................................................... 10-119
Add-On FIFO Status Indicators ........................................................................................... 10-120
Add-On FIFO Control Signals .............................................................................................. 10-120
PCI Bus Mastering with the FIFO ........................................................................................ 10-120
Add-On Initiated Bus Mastering ........................................................................................... 10-120
PCI Initiated Bus Mastering ................................................................................................. 10-121
Address and Transfer Count Registers ............................................................................... 10-121
Bus Mastering FIFO Management Schemes ...................................................................... 10-121
FIFO Bus Master Cycle Priority ........................................................................................... 10-122
FIFO Generated Bus Master Interrupts ............................................................................... 10-122
Bus Interface ................................................................................................................................... 10-122
FIFO PCI Interface (Target Mode) ....................................................................................... 10-122
FIFO PCI Interface (Initiator Mode) ..................................................................................... 10-123
FIFO PCI Bus Master Reads ............................................................................................... 10-125
FIFO PCI Bus Master Writes ............................................................................................... 10-125
Add-On Bus Interface .......................................................................................................... 10-125
Add-On FIFO Register Accesses ........................................................................................ 10-125
Add-On FIFO Direct Access Mode ...................................................................................... 10-126
Additional Status/Control Signals for Add-On Initiated Bus Mastering ................................ 10-127
FIFO Generated Add-On Interrupts ..................................................................................... 10-128
8-Bit and 16-Bit FIFO Add-On Interfaces ............................................................................. 10-128
Configuration ................................................................................................................................... 10-129
FIFO Setup During Initialization ........................................................................................... 10-129
FIFO Status and Control Bits ............................................................................................... 10-129
PCI Initiated FIFO Bus Mastering Setup ............................................................................. 10-130
Add-On Initiated FIFO Bus Mastering Setup ....................................................................... 10-131
Functional Description ..................................................................................................................... 11-133
Pass-Thru Transfers ............................................................................................................. 11-133
Pass-Thru Status/Control Signals ........................................................................................ 11-134
Pass-Thru Add-On Data Bus Sizing ..................................................................................... 11-134
Bus Interface .................................................................................................................................... 11-134
PCI Bus Interface ................................................................................................................. 11-134
PCI Pass-Thru Single Cycle Accesses ................................................................................. 11-134
PCI Pass-Thru Burst Accesses ............................................................................................ 11-134
PCI Retry Conditions ............................................................................................................ 11-134
PCI Write Retries .................................................................................................................. 11-134
PCI Read Retries .................................................................................................................. 11-136
Add-On Bus Interface ........................................................................................................... 11-136
Single Cycle Pass-Thru Writes ............................................................................................. 11-136
iv
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
