Manuals / Xilinx / Power Tools / Welder

Xilinx UG181 manual Sink Core Block Diagram

Models: UG181

1 136

Download 136 pages 34.17 Kb

Page 20

R

Chapter 2: Core Architecture

The functional modules and signals which comprise the different interfaces are shown in Figure 2-2and defined in tables in the following sections.

		SnkEn
	Control	SnkOof
	and	SnkOof
	and	SnkBusErr	SPI-4.2 Lite Sink Core
	Status	SnkBusErr
	Status
	nterface	SnkTrainValid
		SnkFFClk
		SnkFFRdEn_n
		SnkFFAddr[7:0]
		SnkFFData[63:0] or [31:0]
		SnkFFMod[2:0] or [1:0]
		SnkFFSOP
		SnkFFEOP		RDClk
		SnkFFErr		RDat[15:0]
		SnkFFPayloadErr	Sink Data	RCtl
	FIFO	SnkFFPayloadErr	Sink Data	Sink Data
	FIFO		FIFO	Receive
	nterface	SnkFFDIP4Err	FIFO	Receive
	nterface	SnkFFDIP4Err
		SnkFFPayloadDIP4
		SnkFFBurstErr
		SnkFFAlmostEmpty_n
		SnkFFEmpty_n		SPI-4
		SnkFFValid		Sin
		SnkFFValid		Interfa
				Interfa
		SnkAlmostFull_n
		SnkOverflow_n
		SnkStatClk
		SnkStatAddr[3:0]
	FIFO	SnkStat[31:0]
	Status	SnkStat[31:0]	Sink Status
	Status		Sink Status	RSClk
	nterface	SnkStatWrEn_n	Registers	RSClk
		SnkStatMask[15:0]		RStat[1:0]
				RStat[1:0]
				Sink Status
		SnkCalClk		Transmit
		SnkCalClk
		SnkCalWrEn_n
	Calendar	SnkCalAddr[8:0]	Sink
	Control		Sink
			Calendar

	nterface	SnkCalData[7:0]
	nterface	SnkCalData[7:0]
		SnkCalDataOut[7:0]
		Static Configuration Signals
			Reset_n
			SnkFifoReset_n
		Figure 2-2:Sink Core Block Diagram

20

www.xilinx.com

SPI-4.2 Lite v4.3 User Guide

UG181 June 27, 2008

Image 20

Xilinx UG181 manual Sink Core Block Diagram

Contents

LogiCORE IP SPI-4.2 Lite UG181 June 27SPI-4.2 Lite v4.3 User Guide UG181 June 27 Date Version RevisionTable of Contents Designing with the Core Appendix C SPI-4.2 Lite Core Verification SPI-4.2 Lite v4.3 User Guide Schedule of Figures 1SPI-4.2 Lite Core in a Typical Link Layer Application30Addressable Status Fifo Interface 4-Channel Configuration Schedule of Tables Generating the Core Designing with the CoreAppendix a SPI-4.2 Lite Control Word Contents About This GuideConventions TypographicalOnline Document ConventionsPreface About This Guide Introduction About the CoreRecommended Design Experience Additional Core ResourcesTechnical Support FeedbackSPI-4.2 Lite Core DocumentCore Architecture System OverviewCore Architecture Sink CoreSource Core Sink Core Interfaces Sink Core InterfacesSink Core Block Diagram Sink SPI-4.2 Interface RCtlNSink User Interface Sink Control and Status Interface3Sink Fifo Signals Name Sink Fifo InterfaceCore Architecture 3Sink Fifo Signals Name Sink Core Interfaces Sink Static Configuration Interface Number of Complete Training Sequences a Sink Almost Full Threshold Negate Sink Clocking Interface RDClk0 General PurposeSource Core Interfaces RDClk0USER This clockSource SPI-4.2 Interface Source Core InterfacesSource User Interface DomainSource Control and Status Interface 16 bytes with no EOP Source Fifo Interface Name Direction Clock Description Domain14 Source Status Fifo Signals Source Static Configuration Interface Source Status AddressSource Almost Full Threshold Assert Source Clocking Interface Source Calendar Period The SrcCalendarMSysClk0 General Purpose Domain Core Architecture Generating the Core Core Generator Graphical User InterfaceMain Screen Sink Status Options ScreenComponent Name Core OptionsStatus Interface CalendarFlow Control Fifo Threshold Sink Other Options ScreenSynchronization Clock Mode Source Status Options ScreenClocking Clock DistributionSource Other Options Screen BurstingBurst Mode Burst Size in CreditsSysClk Distribution TSClk DistributionCalendar COE File Format Understand Signal Pipelining Designing with the CoreGeneral Design Guidelines Know the Degree of DifficultyRecognize Timing Critical Signals Initializing the SPI-4.2 Lite CoreKeep it Registered Use Supported Design FlowsSink Core Basic OperationSPI-4.2 Interface Sink Data Path Example1SPI-4.2 Interface to the 64-Bit User Interface SnkFFSOP SnkFFEOP RCtl Sink FifoSPI-4.2 Control Word Mapping to 32-bit User Interface Sink Control and Status Signals Sink Fifo Interface Signals Sink Fifo Almost EmptySink Fifo Empty Sink Almost FullSink Status and Flow Control Signals Sink OverflowSink Calendar Initialization Initializing the Calendar In-CircuitSink Flow Control 7Sink Calendar Initialization8Typical Flow Control Implementation for 4-Channel System Sink Status Fifo Interface Example 2,3 None CH 1,2 CH 0,3 CH 0,1,2,3Sink Status Fifo Status Interface Example Sink Static Configuration Signals Insertion of DIP2 ErrorsFifo Almost Full Mode FifoAFMode and Sink Almost Full12FIFO Almost Full Mode Fifo Almost Full Mode 10 or Sink Data Capture ImplementationStatic Alignment DCM Alignment Implementation ConsiderationsSynchronization and Start-up Sync Wait ResetHunt Error Handling Sync DataSync Train In-Frame and Out-of-Frame BehaviorSink Fifo Burst Error Sink SPI-4.2 Bus Error and Sink Bus Error Status70EOP Abort Handling Loss of RDClkSequential End-of-Burst Control Words Sink DIP-4 Error HandlingSequential Payload Control Words 18Example of Error Flag SnkFFDIP4Err Source Core Reserved Control WordsSource Data Path Example Source Core22Source Data Path Minimum SOP Spacing Enforced SrcFFData630 TDat SPI-4.2 Lite v4.3 User Guide Transmitting Training Patterns Transmitting Idle Cycles Inserting DIP4 ErrorsSource Control and Status Signals Source Fifo Interface Signals Source Fifo Almost FullSource Fifo Overflow 24Source Fifo Almost-full ConditionWriting to the Source Fifo Source Status and Flow Control SignalsInsertion of DIP-4 Errors Source Calendar Initialization 27Typical User Design ExampleSource Flow Control Addressable Status Interface 28Source Calendar InitializationAddressable Status Fifo Interface Example 29Addressable Status Fifo Interface30Addressable Status Fifo Interface 4-Channel Configuration Bank None Source Flow Control Transparent Status Interface 33Transparent Status Fifo Interface Block Diagram Source Static Configuration Signals Source Burst ModeSource Burst Mode Example 35Example Of Source Burst Mode =Reset Source Behavior Before Synchronization Source Behavior After SynchronizationEOP Abort Insertion Source Out of FrameSource DIP-2 Error Handling Source Pattern Error HandlingSource Status Frame Word Handling Incorrect Burst TerminationDesigning with the Core Constraining the Core OverviewSink Core Required Constraints Timing ConstraintsMaxdelay for Reset Time Names for ClocksTimespecs for Clocks Constraining the CorePhase Shift for DCM Clock Delay in IserdesDCM and Static Alignment Constraints Sink Core Required ConstraintsPlacement Constraints PlacementIDelayCtrl Sink Core Optional ConstraintsStandards Constraints IOB Register PackingSource Core Required Constraints Area Group ConstraintsTiming Ignore Constraints Timenames for ClocksSource Core Required Constraints Inst SysClk LOC = Bank9 Source Core Optional Constraints Source Core Optional ConstraintsNew Target Region or Device Package User ConstraintsConstraints Migration Modifying the UCF File Target DeviceSink Core Source CoreInst TSClk LOC = Bank3 Embedded Clocking Special Design ConsiderationsSink Clocking Options User Clocking Special Design Considerations2Sink Core User Clocking Resources Clocking Option Global ClockingSink Clocking Options Regional Clocking 3Sink User Clocking Global ClockingSource Clocking Options Source Clocking OptionsMaster Clocking 5Source Clocking Master and Slave ImplementationIOB 8Source Clocking Regional Clocking for SysClk TSClk Clocking Resources Clocking Option Slave Clocking3SysClk Clocking Resources Clocking Option Multiple Core Implementations Instantiating Multiple CoresMultiple Core Implementations Generating the CoresCreating Top-Level UCF File Clocking Considerations SPI-4.2 Lite v4.3 User Guide 123 124 Simulating and Implementing the Core Functional SimulationGenerating a Simulation Model Generating a Simulation Model with Initialized CalendarTiming Simulation Simulating and Implementing the CoreSynthesis Synthesis of Example DesignSynplify SynthesisXilinx Tool Flow Example Design ScriptNGDBuild Mapping the DesignXilinx Tool Flow Static Timing AnalysisGenerating a Bitstream 130 SPI-4.2 Lite Control Word EopsDIP-4 SPI-4.2 Lite Calendar Programming ExampleAppendix B SPI-4.2 Lite Calendar Programming SPI-4.2 Lite Core Verification Appendix C SPI-4.2 Lite Core Verification