Technical Manual
C e m b e r 2 0 0
 Trademark Acknowledgment
 Audience
Organization
 Ansi
 Revision Record
PCI Special Interest Group
Conventions Used in This Manual
Revision Date Remarks
 ViPreface
 Contents
 Chapter Signal Descriptions
 Chapter Registers
 Figures
 Contents
 Tables
 IRDY/, TRDY/, DEVSEL/, STOP/, PERR/, PAR
 XivContents
 Chapter General Description
 Typical LSI53C875A System Application
 New Features in the LSI53C875A
Benefits of Ultra Scsi
 TolerANT Technology
LSI53C875A Benefits Summary
 Scsi Performance
 Ease of Use
PCI Performance
Integration
 Flexibility
Scripts RAM
 Reliability
Testability
 Chapter Functional Description
 PCI Functional Description
PCI Addressing
 PCI Bus Commands and Functions Supported
Configuration Space
 Special Cycle Command
PCI Bus Commands and Encoding Types for the LSI53C875A
Interrupt Acknowledge Command
CBE30 Command Type Supported as Master Supported as Slave
 Reserved Command
2.3 I/O Read Command
2.4 I/O Write Command
Memory Read Command
 Memory Read Line Command
Memory Read Multiple Command
Dual Address Cycle DAC Command
 PCI Functional Description
 Memory Write and Invalidate Command
 PCI Cache Mode
 Enabling Cache Mode
Issuing Cache Commands
 Memory Read Caching
Memory Write Caching
 PCI Cache Mode Alignment
Host Memory
 Examples
Read Example
 Write Example
 Write Example
 Scsi Functional Description
Memory-to-Memory Moves
 Phase Mismatch Handling in Scripts
Scripts Processor
 Internal Scripts RAM
 3 64-Bit Addressing in Scripts
Hardware Control of Scsi Activity LED
 Using the Scsi Clock Quadrupler
Designing an Ultra Scsi System
 Prefetching Scripts Instructions
 Opcode Fetch Burst Capability
Load and Store Instructions
 Jtag Boundary Scan Testing
Scsi Loopback Mode
 Parity Options
 Bits Used for Parity Control and Generation
Bit Name Location Description
 Scsi Parity Errors and Interrupts
Scsi Parity Control
 DMA Fifo
Parity Checking/Generation
 DMA Fifo Sections
Data Paths
 LSI53C875A Host Interface Scsi Data Paths
Asynchronous Scsi Send
 Synchronous Scsi Send
 Asynchronous Scsi Receive
Synchronous Scsi Receive
 Scsi Bus Interface
Scsi Termination
 Select/Reselect During Selection/Reselection
Regulated Termination for Ultra Scsi
 Synchronous Operation
Determining the Data Transfer Rate
 Determining the Synchronous Transfer Rate
 Scsi Transfer Sxfer Register, Bits 75 TP20
Scsi Control Three SCNTL3 Register, Bits 64 SCF20
Scsi Control Three SCNTL3 Register, Bits 20 CCF20
Ultra Scsi Synchronous Data Transfers
 Registers
Interrupt Handling
Polling and Hardware Interrupts
 Functional Description
 Fatal vs. Nonfatal Interrupts
 Masking
 Stacked Interrupts
 Halting in an Orderly Fashion
 Sample Interrupt Service Routine
Read Interrupt Status Zero ISTAT0
 Chained Block Moves
 Block Move and Chained Block Move Instructions
Wide Scsi Send Bit
 Sodl Register
Wide Scsi Receive Bit
Swide Register
 Chained Block Move Scripts Instruction
 Parallel ROM Interface
 Parallel ROM Support
MAD31 Available Memory Space
 Default Download Mode
Serial Eeprom Interface
 Mode a Serial Eeprom Data Format
Power Management
No Download Mode
Byte Name Description
 Power States
Power State D0
Power State D1
Configuration Register Bits
 Power State D2
Power State D3
 Functional Description
 Chapter Signal Descriptions
 LSI53C875A Functional Signal Grouping
LSI53C875A Functional Signal Grouping
 Signal Name Pull-up Current Conditions for Pull-up
Signal Descriptions
Internal Pull-ups on LSI53C875A Signals
LSI53C875A Internal Pull-ups
 System Signals
PCI Bus Interface Signals
System Signals
Type Strength Description
 Bus Command and Byte Enables are
Address and Data Signals
Address and Data Signals
 Initialization Device Select is used as a chip select
Interface Control Signals
Interface Control Signals
 Arbitration Signals
Arbitration Signals
Error Reporting Signals
Error Reporting Signals
 Scsi Bus Interface Signal
Scsi Bus Interface Signals
Interrupt Signal
Interrupt Signal
 Scsi Signals
Scsi Signals
Scsi Control Signals
10 Scsi Control Signals
 Scsi General Purpose I/O pin. Optionally
Gpio Signals
11 Gpio Signals
Scsi General Purpose I/O pin. This pin
 ROM Flash and Memory Interface Signals
12 ROM Flash and Memory Interface Signals
 Memory Address/Data Bus. This bus is used
Test Interface Signals
13 Test Interface Signals
 Power and Ground Signals
14 Power and Ground Signals
 15 Decode of MAD Pins
MAD Bus Programming
 MAD Bus Programming
 Signal Descriptions
 PCI Configuration Registers
Chapter Registers
 VIDVendor ID150
Registers
Vendor ID Read Only
 Device ID Read Only
Command Read/Write
Enable Parity Error Response
DIDDevice ID150
 EMS
WIE
EBM
EIS
 RMA
DPE
SSE
RTA
 Revision ID Rev ID Read Only
Register
DPR
RIDRevision ID70
 Registers 0x09-0x0B
Register 0x0C
 Register 0x0F
Register 0x0D
Register 0x0E
 BAR0
BAR1
 Registers 0x28-0x2B
Registers 0x18-0x1B
Registers 0x1C-0x27
Registers 0x2C-0x2D
 SID
Registers 0x2E-0x2F
Subsystem ID Read Only
Subsystem ID 150
 Expansion ROM Base Address 310
Expansion ROM Base Address Read/Write
Erba
 Capabilities Pointer Read Only CPCapabilities Pointer70
Registers 0x35-0x3B
Register 0x3C
Interrupt Line Read/Write ILInterrupt Line70
 Register 0x3F
Register 0x3D
Register 0x3E
MGMINGNT70
 Pmes
 DSI
D2S
D1S
APS
 PEN
Dscl
Dslt
Bridge Support Extensions Pmcsrbse Read Only
 DATAData70
Scsi Registers
Data Read Only
 Scsi Register Address Map
 Scsi Control Zero SCNTL0 Read/Write
ARB10 Arbitration Mode Bits 1
Arbitration Mode
Simple Arbitration
 Full Arbitration, Selection/Reselection
Start Start Sequence5
 AAP
Watn
EPC
 DHP
EXC
ADB
 Aesp
CON
RST
Iarb
 SSTStart Scsi Transfer0
 SDU
Chained Mode
Scsi Control Two SCNTL2 Read/Write
Scsi Disconnect Unexpected
 WSS
Slpmd
Slphben
VUE0
 Scsi Control Three SCNTL3 Read/Write
Ultra Scsi Enable
WSRWide Scsi Receive0
USE
 EWS
Enable Wide Scsi
SCF20 Synchronous Clock Conversion Factor
CCF20 Clock Conversion Factor
 ENC
RRE
SRE
 Scsi Transfer Sxfer Read/Write
TP20 Scsi Synchronous Transfer Period
 Bits Period ns Mbytes/s
Synch CLK MHz
Transfer Rate
 MO40 Max Scsi Synchronous Offset
 Maximum Synchronous Offset
Synchronous Offset
 General Purpose GPREG0 Read/Write
Scsi Destination ID Sdid Read/Write
Encoded Destination Scsi ID
Gpio
 Scsi First Byte Received Sfbr Read/Write
Sfbr Scsi First Byte Received70
 BSY
REQ
ACK
SEL
 VAL
Register 0x0A
Register 0x0B
Enid
 SBSY/ Status
SREQ/ Status
SACK/ Status
SSEL/ Status
 SSI
Mdpe
Abrt
SIR
 Scsi Registers
 OLF
ILF
ORF
 WOA
AIP
LOA
 SSTAT2 bit
Scsi Synchronous Data Fifo Word Count
Bytes or Words
 SDP0L
 OLF1
ILF1
ORF1
 SDP1
SPL1
Ldsc
DSA
 Abort Operation
Srst Software Reset6
Interrupt Status Zero ISTAT0 Read/Write
 SEM
Signal Process
Sigp
Semaphore
 Sipscsi Interrupt Pending1
Dipdma Interrupt Pending0
 Syncirqd
Flsh
Srun
 Mailbox One MBOX1 Read/Write
Mailbox Zero MBOX0 Read/Write
MBOX0 Mailbox Zero70
MBOX1 Mailbox One70
 Chip Test One CTEST1 Read Only
Chip Test Zero CTEST0 Read/Write
FMTByte Empty in DMA FIFO70
FFLByte Full in DMA FIFO70
 CIO
Register 0x1A
Ddir
 Dack
Teop
Dreq
 CLF
Register 0x1B
FLF
 DMA Fifo Dfifo
Registers 0x1C-0x1F
Temp
 58Registers
 ZSD
Bdis
FBL3
Srtm
 Adck
FBL20 Fifo Byte Control
Chip Test Five CTEST5 Read/Write
Clock Address Incrementor
 Masr
Bbck
DFS
BL2
 Dfdma FIFO70
DBC
 DMA Command Dcmd Read/Write
Dcmd DMA Command70
 DSP
Registers 0x2C-0x2F
Dnad
 Scratch Register a Scratcha Read/Write
DMA Scripts Pointer Save Dsps Read/Write
Dsps DMA Scripts Pointer Save310
Scratcha Scratch Register a 310
 DMA Mode Dmode Read/Write
BL10 Burst Length
 ERLEnable Read Line3
Source I/O Memory Enable
Destination I/O Memory Enable
Siom
 Ermp
Enable Read Multiple
Burst Opcode Fetch Enable
BOF
 Scripts Interrupt Instruction Received Reserved
DMA Interrupt Enable Dien Read/Write
Master Data Parity Error Bus Fault
Illegal Instruction Detected
 Clse
Register 0x3A
Register 0x3B
PFF
 Irqmirq Mode3
Single Step Mode
SSM
 Irqd
IRQ Disable
STDStart DMA Operation2
COMLSI53C700 Compatibility0
 Adder
Registers 0x3C-0x3F
0x40
 SGE
CMP
RSL
UDC
 STO
GEN
 Scsi Interrupt Status Zero SIST0 Read Only
HTHHandshake-to-Handshake Timer Expired0
Initiator Mode Phase Mismatch Target Mode SATN/ Active
 This bit is set when an arbitration only or full arbitration
 PAR
Parity Error
Scsi RST/ Received
Scsi Interrupt Status One SIST1 Read Only
 Scsi Longitudinal Parity Slpar Read/Write
Handshake-to-Handshake Timer Expired
HTH
Slpar Scsi Longitudinal Parity70
 Data Bytes Running Slpar
 Swide Scsi Wide Residue70
Memory Access Control Macntl Read/Write
Scsi Wide Residue Swide Read/Write
TYP
 Pscpt
DWR
DRD
Scpts Scripts
 Scsi Timer Zero STIME0 Read/Write
Gpio Enable
Gpiogpio Enable10
HTH30 Handshake-to-HandshakeTimer Period
 SEL30 Selection Time-Out30
 Hthsf
Hthba
Gensf
 Register 0x4A
Register 0x4B
 SLT
Register 0x4C
Ssaid
ART
 ISO
Register 0x4D
Sclk
QEN
 SCE
Register 0x4E
Qsel
ROF
 EXT
SZM
AWS
LOW
 Register 0x4F
STR
 S16 Bit System
Disable Single Initiator Response
Timer Test Mode
TTM
 Sidlscsi Input Data Latch150
STW
Scsi Input Data Latch Sidl Read Only
 Register 0x53
Lock
 Enpmj
Enable Phase Mismatch Jump
Chip Control 0 CCNTL0 Read/Write
Pmjctl Jump Control6
 Dils
Enndj
Disfc
 64TIMOD
Zmode
Ddac
 EN64DBMV
Enable 64-Bit Direct Bmov
EN64TIBMV
Scsi Bus Data Lines Sbdl Read Only
 Registers 0x5C-0x5F
64-Bit Scripts Selectors
Register 0x5A-0x5B
Registers 0x60-0x9F
 Mmrs
Registers 0xA0-0xA3
Memory Move Read Selector Mmrs Read/Write
Memory Move Read Selector Mmrs
 Mmws
Registers 0xA4-0xA7
Registers 0xA8-0xAB
SFS
 DRS
Registers 0xAC-0xAF
Registers 0xB0-0xB3
Sbms
 Registers 0xB8-0xBB
Phase Mismatch Jump Registers
Registers 0xB4-0xB7
Registers 0xBC-0xBF
 PMJAD1
Registers 0xC0-0xC3
Registers 0xC4-0xC7
PMJAD2
 RBC
Registers 0xC8-0xCB
Registers 0xCC-0xCF
 ESA
Registers 0xD0-0xD3
Entry Storage Address ESA Read/Write
Entry Storage Address 310
 SBC
Registers 0xD4-0xD7
Registers 0xD8-0xDA
 Registers 0xE0-0xFF
Register 0xDB
Registers 0xDC-0xDF
Csbc
 Low Level Register Interface Mode
Scsi Scripts
 High Level Scsi Scripts Mode
 Instruction Description
Sample Operation
Scripts Instructions
 Scsi Scripts Instruction Set
 Scripts Overview
 Block Move Instruction
First Dword
 Table Indirect Bit Addressing
Direct Addressing
TIA
 Command Not Used Don’t Care
 OPC Instruction Defined
Target Mode
OPCOpCode27
 Initiator Mode
 SCSIP20 Scsi Phase2624
 TC230 Transfer Counter230
Scsi Information Transfer Phase
Scsi Phase
 Second Dword
Target Mode Initiator Mode
I/O Instruction
Start Address 310
 Reselect Instruction
IT10 Instruction Type I/O Instruction 3130
OPC20 OpCode 2927
Instruction Defined
 Set Instruction
Disconnect Instruction
Wait Select Instruction
Clear Instruction
 Select Instruction
 Wait Disconnect Instruction
Wait Reselect Instruction
 Relative Addressing Mode
TITable Indirect Mode25
 Relative
Direct
Table Indirect
Bit
 Command Table Offset Absolute Jump Offset
Table Relative
 Set/Clear Sack Reserved
Set/Clear Satn
 O20 Operator 2624
Read/Write Instructions
IT10 Instruction Type Read/Write Instruction 3130
Use data8/SFBR
 Read-Modify-Write Cycles
A60 Register Address A60 2216
 Move To/From Sfbr Cycles
Read/Write Instructions
 Transfer Control Instructions
 Jump Instruction
IT10 Instruction Type Transfer Control 3130
Transfer Control Instructions
 Call Instruction
Return Instruction
 Interrupt Instruction
Interrupt-on-the-Fly Instruction
 Jump/Call an Absolute Address
Scsi Phase Comparisons
RARelative Addressing Mode23
Jump/Call a Relative Address
 Jump If True/False
Bit 2 is asserted
JMP
 Compare Data
Compare Phase
Wait for Valid Phase
WVP
 Data Compare Value
Memory Move Instructions
DCV
Jump Address 310
 No Flush
IT20 Instruction Type Memory Move 3129
Reserved 2825
 Read/Write System Memory from Scripts
Dsps Register 310
 Temp Register 310
Load and Store Instructions
Third Dword
Bit A1 Bit A0 Number of Bytes Allowed to Load and Store
 Reserved 2726 No Flush Store instruction only
IT20 Instruction Type 3129
DSA Relative
Bit Source Destination
 This bit has no effect unless the Prefetch Enable bit
DMA Control Dcntl register is set
 Scsi Scripts Instruction Set
 Chapter Electrical Specifications
DC Characteristics
 Operating Conditions1
Symbol Parameter Min Max Unit Test Conditions
Absolute Maximum Stress Ratings1
Input Capacitance
 Bidirectional Signals-MAD70, MAS/10, MCE/, MOE/, MWE
Bidirectional Signals-GPIO0FETCH/, GPIO1MASTER/, GPIO24
 Output Signal-TDO
 Output Signal-SERR
TolerANT Technology Electrical Characteristics
Output Signals-IRQ/, MAC/TESTOUT, REQ
 Symbol Parameter Min1 Max Unit Test Conditions
Pqfp
 Rise and Fall Time Test Condition
 Input Current as a Function of Input Voltage
 12 External Clock1
AC Characteristics
Symbol Parameter Min Max Unit
 Reset Input
Interrupt Output
 PCI and External Memory Interface Timing Diagrams
 Electrical Specifications
 Target Timing
15 PCI Configuration Register Read
PCI Configuration Register Read
 16 PCI Configuration Register Write
10 PCI Configuration Register Write
 17 32-Bit Operating Register/SCRIPTS RAM Read
11 32-Bit Operating Register/SCRIPTS RAM Read
 18 64-Bit Address Operating Register/SCRIPTS RAM Read
12 64-Bit Address Operating Register/SCRIPTS RAM Read
 19 32-Bit Operating Register/SCRIPTS RAM Write
13 32-Bit Operating Register/SCRIPTS RAM Write
 20 64-Bit Address Operating Register/SCRIPTS RAM Write
14 64-Bit Address Operating Register/SCRIPTS RAM Write
 Initiator Timing
21 Nonburst Opcode Fetch, 32-Bit Address and Data
 15 Nonburst Opcode Fetch, 32-Bit Address and Data
 22 Burst Opcode Fetch, 32-Bit Address and Data
 16 Burst Opcode Fetch, 32-Bit Address and Data
 23 Back-to-Back Read, 32-Bit Address and Data
 17 Back-to-Back Read, 32-Bit Address and Data
 24 Back-to-Back Write, 32-Bit Address and Data
 18 Back-to-Back Write, 32-Bit Address and Data
 25 Burst Read, 32-Bit Address and Data
 19 Burst Read, 32-Bit Address and Data
 26 Burst Read, 64-Bit Address and Data
 20 Burst Read, 64-Bit Address and Data
 27 Burst Write, 32-Bit Address and Data
 21 Burst Write, 32-Bit Address and Data
 28 Burst Write, 64-Bit Address and 32-Bit Data
 22 Burst Write, 64-Bit Address and 32-Bit Data
 External Memory Timing
29 External Memory Read
 23 External Memory Read
 STOP/ Driven by LSI53C875A
 30 External Memory Write
 External Memory Write timings start on
 24 External Memory Write
 Data Byte Enable
 Address out from MOE/, MCE/ High
 Driven by LSI53C875A Higher Valid Write Data
 CBE30 Byte Enable
 Data Byte Enable Out Lower Address
 Data LSI53C875A-Data
 Data Byte Enable Data Out
 Symbol Parameter Min
Slow Memory ≤ 128 Kbytes Read Cycle
 Slow Memory ≤ 128 Kbytes Write Cycle
30 Slow Memory ≤ 128 Kbytes Write Cycle
 ≤ 64 Kbytes ROM Read Cycle
 ≤ 64 Kbyte ROM Write Cycle
32 ≤ 64 Kbyte ROM Write Cycle
 Scsi Timing Diagrams
37 Initiator Asynchronous Send
 38 Initiator Asynchronous Receive
34 Initiator Asynchronous Receive
 39 Target Asynchronous Send
35 Target Asynchronous Send
 40 Target Asynchronous Receive
41 SCSI-1 Transfers 5.0 Mbytes
 Symbol Parameter Min Max Unit
 37 Initiator and Target Synchronous Transfer
 Package Diagrams
38 LSI53C875A 160-Pin Pqfp Mechanical Drawing
 Pin Pqfp P3 Mechanical Drawing Sheet 2
 Signal Pin
44 160 Pqfp Pin List by Location
 Pin BGA Mechanical Drawing
 45 169 BGA Pin List by Location
NC1
 Appendix a Register Summary
 Table A.2 LSI53C875A Scsi Register Map
 Register Summary
 Scratch Registers C-RSCRATCHC-SCRATCHR
 Table A.2 LSI53C875A Scsi Register Map
 Register Summary
 Appendix B External Memory Interface Diagram Examples
 Figure B.2 64 Kbyte Interface with 150 ns Memory
 External Memory Interface Diagram Examples
 Figure B.4 512 Kbyte Interface with 150 ns Memory
 Symbols
Index
 IX-2Index
 Numerics
SGE 4-74,4-77 SI
 IX-4Index
 IX-5
 IX-6Index
 IX-7
 IX-8Index
 IX-9
 IX-10Index
 Customer Feedback
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