TolerANT Technology | LSI 53C810A guide

Software development tools are available to developers who use the SCSI SCRIPTS language to create customized SCSI software applications. The LSI53C810A allows easy ﬁrmware upgrades and is supported by advanced SCRIPTS commands.

1.1 TolerANT® Technology

The LSI53C810A features TolerANT technology, which includes active negation on the SCSI drivers and input signal ﬁltering on the SCSI receivers. Active negation actively drives the SCSI Request, Acknowledge, Data, and Parity signals HIGH rather than allowing them to be passively pulled up by terminators. Active negation is enabled by setting bit 7 in the SCSI Test Three (STEST3) register.

TolerANT receiver technology improves data integrity in unreliable cabling environments where other devices would be subject to data corruption. TolerANT receivers ﬁlter the SCSI bus signals to eliminate unwanted transitions, without the long signal delay associated with RC-type input ﬁlters. This improved driver and receiver technology helps eliminate double clocking of data, the single biggest reliability issue with SCSI operations. The TolerANT input signal ﬁltering is a built in feature of all LSI Logic fast SCSI devices. On the LSI53C8XX family products, the user may select a ﬁltering period of 30 or 60 ns, with bit 1 in the SCSI Test Two (STEST2) register.

The beneﬁts of TolerANT technology include increased immunity to noise when the signal is going HIGH, better performance due to balanced duty cycles, and improved fast SCSI transfer rates. In addition, TolerANT SCSI devices do not cause glitches on the SCSI bus at power-up or power-down, so other devices on the bus are also protected from data corruption. TolerANT technology is compatible with both the Alternative One and Alternative Two termination schemes proposed by the American National Standards Institute.

1-2	General Description

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LSI 53C810A technical manual TolerANT Technology

Contents

Technical Manual R c h 2 0 0 Trademark Acknowledgment Audience Organization Ansi Revision Record PCI Special Interest GroupConventions Used in This Manual ViPreface Contents Chapter PCI Functional Description Chapter Electrical Characteristics Figures Tables IRDY/, TRDY/, DEVSEL/, STOP/, PERR/, PAR Chapter General Description TolerANT Technology LSI53C810A Beneﬁts Summary Scsi Performance Ease of Use PCI PerformanceIntegration Flexibility Reliability Testability LSI53C810A System Diagram LSI53C810A Chip Block Diagram Chapter Functional Description Scsi Core Scripts Processor DMA Core Sdms Software The Total Scsi Solution Prefetching Scripts Instructions PCI Cache Mode Opcode Fetch Burst Capability Load and Store Instructions Loopback ModeParity Options 2 3.3 V/5 V PCI Interface Bits Used for Parity Control and Observation BIt Name Location Description Scsi Parity Errors and Interrupts Scsi Parity Control DMA Fifo Data Paths Asynchronous Scsi Receive Asynchronous Scsi SendSynchronous Scsi Send Synchronous Scsi Receive LSI53C810A Host Interface Data Paths Select/Reselect During Selection/Reselection Scsi Bus InterfaceTerminator Networks Active or Regulated Termination SCNTL3 Register, Bits 64 SCF20 Synchronous OperationDetermining the Data Transfer Rate Achieving Optimal Scsi Send Rates SCNTL3 Register, Bits 20 CCF20Sxfer Register, Bits 75 TP20 Interrupt Handling Polling and Hardware Interrupts Registers Interrupt Handling Fatal vs. Nonfatal Interrupts Masking Stacked Interrupts Halting in an Orderly Fashion Sample Interrupt Service Routine Read Interrupt Status Istat Functional Description PCI Addressing 1 Conﬁguration Space 2.2 I/O Write Command PCI Bus Commands and Functions Supported2.1 I/O Read Command Support for PCI Cache Line Size Register Mmov Misalignment Selection of Cache Line SizeAlignment Memory Write and Invalidate Command Memory Read Line Command Memory Read Multiple Command Unsupported PCI Commands PCI Bus Commands and Encoding Types Conﬁguration Registers PCI Conﬁguration Register Map Register EBM EperWIE EMS DPE EISEnable I/O Space0Status Read/Write SSE RTA DPRData Parity Reported8 RID Register 0x08Register 0x09 Register 0x0D Latency Timer Read/Write LTLatency Timer70Register 0x0C Cache Line Size Read/Write Register 0x14 Register 0x0ERegister 0x10 Barz Interrupt Line Read/Write ILInterrupt Line70 Register 0x3CRegister 0x3D Interrupt Pin Read Only IPInterrupt Pin70 MinGnt Read Only MGMinGnt70 Register 0x3ERegister 0x3F MaxLat Read Only MLMaxLat70 PCI Functional Description Chapter Signal Descriptions LSI53C810A Pin Diagram Signals are assigned a type. There are four signal types Power and Ground Signals Functional Signal Grouping System Signals PCI Bus Interface SignalsSystem Signals Address and Data Signals Address and Data Signals Interface Control Signals Interface Control Signals Arbitration Signals Arbitration SignalsError Reporting Signals Error Reporting Signals Scsi Bus Interface Signals Scsi Bus Interface SignalsScsi Bus Interface Signals Additional Interface Signals Additional Interface Signals MAC Signal Descriptions Chapter Operating Registers Register 0x00 Scsi Control Zero SCNTL0 Read/Write Full Arbitration, Selection/Reselection ARB10 Arbitration Mode Bits 1Simple Arbitration Watn Select with SATN/ on a Start Sequence4 StartStart Sequence TRG EPCAAP ADB Register 0x01EXC DHP Aesp CONRST Iarb SSTStart Scsi Transfer0 SDU Register 0x02Register 0x03 Reserved CCF20 Clock Conversion Factor SRE Register 0x04RRE Scsi Transfer Sxfer Read/Write Register 0x05Reserved ENC20 Encoded LSI53C810A Chip Scsi ID TP20 Scsi Synchronous Transfer Period75 TP2 TP1 TP0 Xferp Reserved MO30 Max Scsi Synchronous Offset Sclk SCNTL3 Scsi Destination ID Sdid Read/Write Register 0x06Scsi Synchronous Offset Values Reserved ENC20 Encoded destination Scsi ID Reserved GPIO10 General Purpose Register 0x07General Purpose Gpreg Read/Write Scsi First Byte Received Sfbr Read/Write BSY REQACK SEL VAL Register 0x0A 0x8AScsi Selector ID Ssid Read Only Scsi Valid Bit Register 0x0B 0x8B Register 0x0C 0x8C Abrt DFEMdpe SSI ILF Register 0x0D 0x8DIID ORF LOA OLFAIP WOA FF30 Fifo Flags Register 0x0E 0x8EScsi Status One SSTAT1 Read Only Sdpl Latched Scsi Parity3 Scsi Status Two SSTAT2 Read Only Scsi MSG/ Signal Scsi CD/ Signal Scsi IO/ SignalRegister 0x0F 0x8F Ldsc Registers 0x10-0x13 DSA SEM SrstSigp Sipscsi Interrupt Pending1 IntfInterrupt-on-the-Fly Chip Test Zero CTEST0 Read/Write Register 0x18Dipdma Interrupt Pending0 FMTByte Empty in DMA FIFO70 Ddir Register 0x19Register 0x1A 0x9A Dreq CIOTeop Dack CLF Register 0x1B 0x9BFLF Temp Registers 0x1C-0x1F 0x9C-0x9FRegister 0x20 0xA0 DMA Fifo Dfifo Chip Test Four CTEST4 Read/Write Burst DisableRegister 0x21 0xA1 Bdis Srtm ZmodZSD Bbck Register 0x22 0xA2Adck Chip Test Six CTEST6 Read/Write Register 0x23 0xA3Masr Dfdma FIFO70 DBC Registers 0x24-0x26 0xA4-0xA6DMA Byte Counter DBC Read/Write DMA Byte Counter 230 Registers 0x2C-0x2F 0xAC-0xAF Register 0x27 0xA7Registers 0x28-0x2B 0xA8-0xAB Dnad Dsps Registers 0x30-0x33 0xB0-0xB3DMA Scripts Pointer Save Dsps Read/Write DMA Scripts Pointer Save 310 Scratcha Registers 0x34-0x37 0xB4-0xB7Register 0x38 0xB8 ERLEnable Read Line3 Source I/O Memory EnableDestination I/O Memory Enable Siom BOF Burst Opcode Fetch EnableErmp MANManual Start Mode0 Register 0x39 0xB9 SIR Register 0x3A 0xBA Register 0x3B 0xBB STD SSMIrqm Irqd Adder Sum Output Adder Read Only Register 0x3C-0x3F 0xBC-0xBFCOM Adder RSL Register 0x40 0xC0CMP SGE Unexpected Disconnect Scsi Reset ConditionUDC PAR GEN Register 0x41 0xC1STO HTH Scsi Interrupt Status Zero SIST0 Read Only Initiator Mode Phase Mismatch Target Mode SATN/ ActiveRegister 0x42 0xC2 CMPFunction Complete6 Transfer Sxfer register Scsi RST/ Received Parity ErrorRegister 0x43 0xC3 Scsi Interrupt Status One SIST1 Read Only Scsi Longitudinal Parity Slpar Read/Write Handshake-to-Handshake Timer ExpiredRegister 0x44 0xC4 Slpar Scsi Longitudinal Parity70 TYP30 Chip Type Memory Access Control Macntl Read/WriteRegister 0x46 0xC6 DRD Register 0x47 0xC7DWR Pscpt Register 0x48 0xC8 Scsi Timer Zero STIME0 Read/WriteHTH30 Handshake-to-Handshake Timer Period GPIO0EN Register 0x49 0xC9 Scsi Timer One STIME1 Read/WriteReserved GEN30 General Purpose Timer Period SELSelection Time-Out30 Register 0x4A 0xCA Response ID Respid Read/Write Respid Response ID70 SLT Register 0x4C 0xCCSsaid ART Siso Register 0x4D 0xCDSclk ROF Register 0x4E 0xCESCE SLB LOW Register 0x4F 0xCFEXT DSI STRHSC TTM Scsi Input Data Latch Sidl Read Only Register 0x50 0xD0Stwscsi Fifo Test Write0 Sidlscsi Input Data Latch150 Registers 0x54 0xD4 Registers 0x58 0xD8 Low Level Register Interface Mode Chapter Instruction Set Processor Scsi Scripts Sample Operation Scripts Instructions Instruction Set of the I/O Processor Block Move Instructions Scripts Overview Direct Addressing First DwordIT10 Instruction Type Block Move 3130 Indirect Addressing TIA Table Indirect Addressing Block Move Instruction Register OpCode Initiator Mode SCSIP20 Scsi Phase2624 Start Address 310 Second DwordTC230 Transfer Counter230 I/O Instruction IT10 Instruction Type I/O Instruction 3130 OPC20 OpCode 2927 Reselect Instruction Disconnect Instruction Wait Select Instruction Set Instruction I/O Instruction Register Clear Instruction Select Instruction Wait Disconnect Instruction Wait Reselect Instruction Relative Addressing Mode TITable Indirect Mode25 Relative DirectTable Indirect Endid SAStart Address310 Set/Clear SackSet/Clear Satn Read/Write Instructions Read-Modify-Write Cycles Move To/From Sfbr Cycles Read/Write Register Instruction Read/Write Instructions Byte Received Sfbr Transfer Control Instructions Jump Instruction Call Instruction Return Instruction Instruction Type Transfer Control Interrupt Instruction Interrupt on-the-Fly Instruction Jump/Call a Relative Address RARelative Addressing Mode23Jump/Call an Absolute Address JMP Jump If True/False WVP DCM Jump Address 310 Memory Move Instructions Memory to Memory Move Instruction TC230 Transfer Count Third DwordNo Flush Temp Register 310 Load and Store Instructions Read/Write System Memory from a Scripts Instruction Reserved 2726 No Flush Store instruction only IT20 Instruction Type 3129DSA Relative Scripts instruction prefetching, see , Func This bit has no effect unless the Prefetch Enable bitDMA Control Dcntl register is set. For information on Memory/IO Address / DSA Offset 310 Load and Store Instruction Format Chapter Electrical Characteristics DC Characteristics Absolute Maximum Stress Ratings Operating Conditions Input Signals-CLK, SCLK, GNT/, IDSEL, RST/, Testin Scsi Signals-SD70/, SDP/, SREQ/, SackScsi Signals-SMSG, SIO/, SCD/, SATN/, SBSY/, SSEL/, Srst Capacitance Output Signals-MAC/TESTOUT, REQOutput Signal-IRQ 10 Bidirectional Signals-AD310, CBE/30, FRAME/, IRDY/, Trdy DEVSEL/, STOP/, PERR/, PAR 11 Bidirectional Signals-GPIO0FETCH/, GPIO1MASTER 12 TolerANT Technology Electrical Characteristics Pqfp Rise and Fall Time Test Conditions Input Current as a Function of Input Voltage AC Characteristics Clock Timing Interrupt Output 14 Reset Input TimingReset Input Initiator Timing PCI Interface Timing DiagramsTarget Timing PCI Conﬁguration Register Read 10 PCI Conﬁguration Register Write 11 Target Read 12 Target Write 13 OpCode Fetch, Nonburst 14 Burst Opcode Fetch 15 Back-to-Back Read 16 Back-to-Back Write This page intentionally left blank 17 Burst Read OutIn 18 Burst Write AD Driven by LSI53C810A CBE/ Driven by LSI53C810A PCI Interface Timing PCI Timing Scsi Timings 17 Initiator Asynchronous Send 5 Mbytes/s 18 Initiator Asynchronous Receive 5 Mbytes/s 20 Initiator Asynchronous Receive 19 Target Asynchronous Send 5 Mbytes/s 21 Target Asynchronous Send 20 Target Asynchronous Receive 5 Mbytes/s 22 Target Asynchronous Receive 21 SCSI-1 Transfers SE, 5.0 Mbytes/s Symbol Parameter Min Max Unit Package Drawings Package Drawings 24 100 LD Pqfp UD Mechanical Drawing Sheet 1 24 100 LD Pqfp UD Mechanical Drawing Sheet 2 Electrical Characteristics Appendix a Register Summary Table A.2 Scsi Registers Register Summary Table A.2 Scsi Registers Symbols Numerics IX-2Index Index IX-4Index IX-5 IX-6Index IX-7 IX-8Index Customer Feedback Reader’s Comments Excellent Good Average Fair Distributors by State California New York Direct Sales Representatives by State Component and Boards Sales Ofﬁces and Design Resource Centers International International Distributors