Xilinx UG181 Welder User Manual


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www.xilinx.com SPI-4.2 Lite v4.3 User Guide
UG181 June 27, 2008
Figure 4-30: Addressable Status FIFO Interface: 4-Channel Configuration. . . . . . . . . . . 89
Figure 4-31: Addressable Status FIFO Interface: 256-channel configuration . . . . . . . . . . 90
Figure 4-32: Addressable Status FIFO Interface - SPI-4.2 Interface to User Interface . . 91
Figure 4-33: Transparent Status FIFO Interface Block Diagram. . . . . . . . . . . . . . . . . . . . . 92
Figure 4-34: Transparent Source Status FIFO Interface: 256-channel Configuration . . . 93
Figure 4-35: Example Of Source Burst Mode = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Figure 4-36: Example Of Source Burst Mode = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Figure 4-37: Source Startup Sequence State Machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Chapter 6: Special Design Considerations
Figure 6-1: Embedded Clocking Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Figure 6-2: Example: Sink User Clocking Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Figure 6-3: Sink User Clocking: Global Clocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Figure 6-4: Sink User Clocking: Regional Clocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Figure 6-5: Source Clocking: Master and Slave Implementation . . . . . . . . . . . . . . . . . . . 116
Figure 6-6: Source Clocking: Global Clocking for SysClk. . . . . . . . . . . . . . . . . . . . . . . . . 117
Figure 6-7: Source Clocking: Global Clocking for TSClk . . . . . . . . . . . . . . . . . . . . . . . . . 117
Figure 6-8: Source Clocking: Regional Clocking for SysClk. . . . . . . . . . . . . . . . . . . . . . . 118
Figure 6-9: Source Clocking: Regional Clocking for TSClk . . . . . . . . . . . . . . . . . . . . . . . 118
Figure 6-10: Slave Clocking Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
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