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Hardware Reference Manual 21
Contents
95 Order in which Data is Transmitted from TBUF........................................................................263
96 Mapping of TBUF Partitions to Transmit Protocol ....................................................................263
97 Number of Elements per TBUF Partition ..................................................................................264
98 TBUF SPI-4 Control Definition..................................................................................................266
99 TBUF CSIX Control Definition ..................................................................................................267
100 Transmit SPI-4 Control Word....................................................................................................268
101 Transmit CSIX Header..............................................................................................................269
102 Summary of RBUF and TBUF Operations................................................................................274
103 SRB Definition by Clock Phase Number...................................................................................276
104 Data Deskew Functions............................................................................................................281
105 Calendar Deskew Functions.....................................................................................................281
106 Flow Control Deskew Functions ...............................................................................................281
107 Data Training Sequence ...........................................................................................................282
108 Flow Control Training Sequence ..............................................................................................282
109 Calendar Training Sequence ....................................................................................................283
110 IXP2800 Network Processor Requires Data Training...............................................................284
111 Switch Fabric or SPI-4 Framer Requires Data Training ...........................................................285
112 IXP2800 Network Processor Requires Flow Control Training ..................................................286
113 Switch Fabric Requires Flow Control Training..........................................................................286
114 SPI-4.2 Transmitter State Machine Transitions on 16-Bit Bus Transfers .................................314
115 Training Transmitter State Machine Transitions on 16-Bit Bus Transfers ................................315
116 CSIX-L1 Transmitter State Machine Transitions on CWord Boundaries ..................................315
117 PCI Block FIFO Sizes ...............................................................................................................322
118 Maximum Loading ....................................................................................................................322
119 PCI Commands ........................................................................................................................322
120 PCI BAR Programmable Sizes .................................................................................................324
121 PCI BAR Sizes with PCI Host Initialization ...............................................................................324
122 Legal Combinations of the Strap Pin Options...........................................................................330
123 Slave Interface Buffer Sizes .....................................................................................................332
124 Doorbell Interrupt Registers......................................................................................................337
125 IRQ Interrupt Options by Stepping............................................................................................339
126 DMA Descriptor Format ............................................................................................................342
127 PCI Maximum Burst Size..........................................................................................................345
128 Command Bus Master Configuration Transactions ..................................................................347
129 Command Bus Master Address Space Map to PCI..................................................................347
130 Byte Lane Alignment for 64-Bit PCI Data In (64 Bits PCI Little-Endian to Big-Endian
with Swap) ................................................................................................................................353
131 Byte Lane Alignment for 64-Bit PCI Data In (64 Bits PCI Big-Endian to Big-Endian
without Swap) ...........................................................................................................................353
132 Byte Lane Alignment for 32-Bit PCI Data In (32 Bits PCI Little-Endian to Big-Endian
with Swap) ................................................................................................................................353
133 Byte Lane Alignment for 32-Bit PCI Data In (32 Bits PCI Big-Endian to Big-Endian
without Swap) ...........................................................................................................................353
134 Byte Lane Alignment for 64-Bit PCI Data Out (Big-Endian to 64 Bits PCI Little
Endian with Swap) ....................................................................................................................354
135 Byte Lane Alignment for 64-Bit PCI Data Out (Big-Endian to 64 Bits PCI Big-Endian
without Swap) ...........................................................................................................................354
136 Byte Lane Alignment for 32-Bit PCI Data Out (Big-Endian to 32 Bits PCI Little
Endian with Swap) ....................................................................................................................354
137 Byte Lane Alignment for 32-Bit PCI Data Out (Big-Endian to 32 Bits PCI Big-Endian
without Swap) ...........................................................................................................................354