MVME5100 Single Board Computer Programmer's Reference Guide

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2 Hawk PCI Host Bridge & Multi-Processor Interrupt Controller Interrupt Request Register (IRR) In-Service Register (ISR) Interrupt Router There is a Interrupt Request Register (IRR) for each processor. The IRR always passes the output of the IS except during Interrupt Acknowledge cycles. This guarantees that the vector which is read from the Interrupt Acknowledge Register does not change due to the arrival of a higher priority interrupt. The IRR also serves as a pipeline register for the two tick propagation time through the IS. There is a In-Service Register (ISR) for each processor. The contents of the ISR are the priority and source of all interrupts, which are in-service. The ISR receives a bit-set command during Interrupt Acknowledge cycles and a bit-clear command during End Of Interrupt cycles. The ISR is implemented as a 40 bit register with individual bit set and clear functions. Fifteen bits are used to store the priority level of each interrupt which is in-service. Twenty-five bits are used to store the source identification of each interrupt which is in service. Therefore, there is one bit for each possible interrupt priority and one bit for each possible interrupt source. The Interrupt Router monitors the outputs from the ISR’s, Current Task Priority Registers, Destination Registers, and the IRR’s to determine when to assert a processor’s INT pin. When considering the following rule sets, it is important to remember that there are two types of inputs to the Interrupt Selectors. If the interrupt is a distributed class interrupt, there is a single bit in the IPR associated with this interrupt and it is delivered to both Interrupt Selectors. This IPR bit is qualified by the destination register contents for that interrupt before the Interrupt Selector compares its priority to the priority of all other requesting interrupts for that processor. If the interrupt is programmed to be edge sensitive, the IPR bit is cleared when the vector for that interrupt is returned when the Interrupt Acknowledge register is examined. On the other hand, if the interrupt is a direct/multicast class interrupt, there are two bits in the IPR associated with this interrupt. One bit for each processor. 2-60 <strong>Computer</strong> Group Literature Center Web Site
Multi-Processor Interrupt Controller (MPIC) Then one of these bits is delivered to each Interrupt Selector. Since this interrupt source can be multicast, each of these IPR bits must be cleared separately when the vector is returned for that interrupt to a particular processor. If one of the following sets of conditions is true, the interrupt pin for processor 0 is driven active. ❏ Set1 – The source ID in IRR_0 is from an external source. – The destination bit for processor 1 is 0 for this interrupt. – The priority from IRR_0 is greater than the highest priority in ISR_0. – The priority from IRR_0 is greater than the contents of task register_0. ❏ Set2 – The source ID in IRR_0 is from an external source. – The destination bit for processor 1 is a 1 for this interrupt. – The source ID in IRR_0 is not present is ISR_1. – The priority from IRR_0 is greater than the highest priority in ISR_0. – The priority from IRR_0 is greater than the Task Register_0 contents. – The contents of Task Register_0 is less than the contents of Task Register_1. ❏ Set3 – The source ID in IRR_0 is from an internal source. – The priority from IRR_0 is greater than the highest priority in ISR_0. – The priority from IRR_0 is greater than the Task Register_0 contents. There is a possibility for a priority tie between the two processors when resolving external interrupts. In that case, the interrupt will be delivered to processor 0 or processor 1 as determined by the TIE mode bit. This case is not defined in the above rule set. http://www.motorola.com/computer/literature 2-61 2
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MVME5100 Single Board Computer Prog
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Safety Summary The following genera
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CE Notice (European Community) Moto
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Contents About This Manual Summary
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PCI Slave .........................
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Spurious Vector Register...........
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Address Parity Error Log Register .
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List of Figures Figure 1-1. MVME510
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xviii Table 2-13. Address Modificat
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About This Manual The MVME5100 Sing
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Part Number Description MVME761-011
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8259 Interrupts, and a description
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In this manual, assertion and negat
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1 Product Data and Memory Maps Main
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1 Product Data and Memory Maps Memo
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1 Product Data and Memory Maps Tabl
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1 Product Data and Memory Maps PCI
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1 Product Data and Memory Maps L2 C
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1 Product Data and Memory Maps conn
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1 Product Data and Memory Maps to i
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1 Product Data and Memory Maps Requ
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1 Product Data and Memory Maps PROC
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1 Product Data and Memory Maps The
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1 Product Data and Memory Maps Tabl
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1 Product Data and Memory Maps Stat
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1 Product Data and Memory Maps MODR
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1 Product Data and Memory Maps NVRA
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1 Product Data and Memory Maps Geog
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1 Product Data and Memory Maps Boar
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1 Product Data and Memory Maps IPMC
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1 Product Data and Memory Maps Z853
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1 Product Data and Memory Maps IDRE
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2Hawk PCI Host Bridge & Multi- Proc
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Block Diagram PCI Bus MPIC Interfac
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PPC Bus Interface Functional Descri
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PPC Slave Functional Description Ea
Page 77 and 78: PPC FIFO PPC Transfer Type Transfer
Page 79 and 80: Functional Description Table 2-2. P
Page 81 and 82: Table 2-4. PPC Master Read Ahead Op
Page 83 and 84: PPC Arbiter Pin Name Functional Des
Page 85 and 86: PPC Parity Functional Description T
Page 87 and 88: PCI Bus Interface PCI Address Mappi
Page 89 and 90: Functional Description Each map dec
Page 91 and 92: Command Types: Functional Descripti
Page 93 and 94: Fast Back-to-Back Transactions Func
Page 95 and 96: Functional Description It should be
Page 97 and 98: Functional Description The PCI Mast
Page 99 and 100: . Figure 2-6. PCI Spread I/O Addres
Page 101 and 102: Functional Description The device t
Page 103 and 104: Functional Description The Hawk’s
Page 105 and 106: Functional Description Notes 1. “
Page 107 and 108: . DH07-00 DH15-08 DH23-16 DH31-24 F
Page 109 and 110: Error Handling Functional Descripti
Page 111 and 112: Functional Description When not bei
Page 113 and 114: Functional Description PPC1-Bug>md
Page 115 and 116: Functional Description From the per
Page 117 and 118: Functional Description ❏ Write po
Page 119 and 120: Multi-Processor Interrupt Controlle
Page 121 and 122: CSR’s Readability Multi-Processor
Page 123 and 124: Interprocessor Interrupts (IPI) 825
Page 125 and 126: Multi-Processor Interrupt Controlle
Page 127: Program Visible Registers Multi-Pro
Page 131 and 132: Reset State Multi-Processor Interru
Page 133 and 134: EOI Register Multi-Processor Interr
Page 135 and 136: Registers Registers This section pr
Page 137 and 138: Bit ---> Table 2-16. PPC Register M
Page 139 and 140: General Control-Status/Feature Regi
Page 141 and 142: PPC Arbiter/PCI Arbiter Control Reg
Page 143 and 144: Registers PRKx Parking. This field
Page 145 and 146: Hardware Control-Status/Prescaler A
Page 147 and 148: PPC Error Test/Error Enable Registe
Page 149 and 150: Registers XBTOI PPC Address Bus Tim
Page 151 and 152: Registers PPER PCI Parity Error. Th
Page 153 and 154: PPC Error Attribute Register Regist
Page 155 and 156: PCI Interrupt Acknowledge Register
Page 157 and 158: PPC Slave Offset/Attribute (0, 1 an
Page 159 and 160: The fields within XSADD3 are define
Page 161 and 162: Registers KEY Key. This field is us
Page 163 and 164: PPC6-Bug>mw feff0068 aa88;h Effecti
Page 165 and 166: PCI Registers 3 1 3 0 2 9 2 8 2 7 2
Page 167 and 168: PCI Command/ Status Registers Regis
Page 169 and 170: Revision ID/ Class Code Registers O
Page 171 and 172: The MPIC Memory Base Address Regist
Page 173 and 174: Registers INV Invalidate Enable. If
Page 175 and 176: Conceptual perspective from the PCI
Page 177 and 178: Registers CONFIG_DATA Register The
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3 1 3 0 2 9 2 8 2 7 2 6 2 5 Table 2
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3 1 3 0 2 9 2 8 2 7 Feature Reporti
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Registers M CASCADE MODE. Allows ca
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IPI Vector/Priority Registers Offse
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Timer Current Count Registers Offse
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Timer Vector/Priority Registers Off
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Registers MASK MASK. Setting this b
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Hawk Internal Error Interrupt Vecto
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Current Task Priority Registers Off
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3System Memory Controller (SMC) Int
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PowerPC Side D[0:63] DP[0:7] Correc
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Figure 3-4. Hawk’s System Memory
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Page Holding SDRAM Speeds Functiona
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SDRAM Organization Functional Descr
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Cache Coherency Functional Descript
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Error Logging Functional Descriptio
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Functional Description When the wid
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Table 3-4. PPC60x to ROM/Flash (64
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ROM/Flash Speeds ACCESS TYPE Functi
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ACCESS TYPE Functional Description
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I 2 C Byte Write Functional Descrip
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I 2 C Random Read Functional Descri
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I 2 C Current Address Read Function
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I 2 C Page Write Functional Descrip
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I 2 C Sequential Read Functional De
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SDA START DEVICE ADDR M S B BEGIN R
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Chip Configuration Programming Mode
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FEF80070 DPE_A FEF80078 DPE_DH FEF8
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Vendor/Device Register Address $FEF
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SDRAM Enable and Size Register (Blo
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SDRAM Base Address Register (Blocks
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drr value Programming Model us (64
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Normal View of Data (rwcb=0) Check-
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! Caution Programming Model sien Wh
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Programming Model esbt esbt is set
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Scrub Address Register Programming
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Programming Model each half of the
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ROM B Base/Size Register Address Bi
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ROM Speed Attributes Registers Prog
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Data Parity Error Log Register Addr
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Data Parity Error Lower Data Regist
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I 2 C Status Register Programming M
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I 2 C Receiver Data Register Addres
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SDRAM Speed Attributes Register Pro
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Programming Model swr_dpl swr_dpl c
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32-Bit Counter Address $FEF80100 Bi
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Software Considerations When the tb
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SDRAM Size I 2 C EEPROMs Software C
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Software Considerations c. If a CAS
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Software Considerations Notes 1. Us
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Software Considerations 8. Now that
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2. For each of the Blocks A through
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ECC Codes ECC Codes When the Hawk r
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4Hawk Programming Details Introduct
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8259 Interrupts PRI PSIO IRQ Input
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Exceptions Sources of Reset Soft Re
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Endian Issues Hawk Endian Issues Th
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Processor/Memory Domain MPIC’s In
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A Manufacturers’ Documents Manufa
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A Related Specifications Related Sp
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B MVME5100 VPD Reference Informatio
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C Introduction The MVME2700 board,
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Numerics 32-Bit Counter 3-73 SMC 3-
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E ECC Codes Hawk 3-87 SMC 3-11 ECC
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L L2 Cache 1-1, 1-9 L2 Cache SRAM S
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devices, when Big-Endian 2-38 Maste
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om_a_rv and rom_b_rv encoding 3-55
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VME Processor Module MVME510x 1-1 V
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MVME5100 Single Board Computer Programmer's Reference Guide

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