MVME5100 Single Board Computer Programmer's Reference Guide

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2 Hawk PCI Host Bridge & Multi-Processor Interrupt Controller Processor’s Current Task Priority Each processor has a task priority register which is set by system software to indicate the relative importance of the task running on that processor. The processor will not receive interrupts with a priority level equal to or lower than its current task priority. Therefore, setting the current task priority to 15 prohibits the delivery of all interrupts to the associated processor. Nesting of Interrupt Events A processor is guaranteed never to have an in service interrupt preempted by an equal or lower priority source. An interrupt is considered to be in service from the time its vector is returned during an interrupt acknowledge cycle until an EOI (End of Interrupt) is received for that interrupt. The EOI cycle indicates the end of processing for the highest priority in service interrupt. Spurious Vector Generation Under certain circumstances the MPIC will not have a valid vector to return to the processor during an interrupt acknowledge cycle. In these cases the spurious vector from the spurious vector register will be returned. The following cases would cause a spurious vector fetch: ❏ INT is asserted in response to an externally sourced interrupt, which is activated with level sensitive logic, and the asserted level is negated before the interrupt is acknowledged. ❏ INT is asserted for an interrupt source, which is masked using the mask bit, in the Vector-Priority register before the interrupt is acknowledged. 2-54 <strong>Computer</strong> Group Literature Center Web Site
Interprocessor Interrupts (IPI) 8259 Compatibility Multi-Processor Interrupt Controller (MPIC) Processors 0 and 1 can generate interrupts which are targeted for the other or both processors. There are four Interprocessor Interrupts (IPI) channels. The interrupts are initiated by writing a bit in the IPI dispatch registers. If subsequent IPI’s are initiated before the first is acknowledged, only one IPI will be generated. The IPI channels deliver interrupts in Direct Mode and can be directed to more than one processor. The MPIC provides a mechanism to support PC-AT compatible chip sets using the 8259 interrupt controller architecture. After power-on reset, the MPIC defaults to 8259 pass-through mode. In this mode, if the OPIC is enabled, interrupts from external source number 0 (the interrupt signal from the 8259 is connected to this external interrupt source on the MPIC) are passed directly to processor 0. If the pass-through mode is disabled and the OPIC is enabled, the 8259 interrupts are delivered using the priority and distribution mechanisms of the MPIC. MPIC does not interact with the vector fetch from the 8259 interrupt controller. Hawk Internal Errror Interrupt Hawk’s PHB and SMC detected errors are grouped together and sent to the interrupt logic as a singular interrupt source (Hawk internal error interrupt). This Hawk internal error interrupt request is an active low-level sensitive interrupt. The interrupt delivery mode for this interrupt is distributed. When the OPIC is disabled, the Hawk internal error interrupt will be passed directly on to processor 0 INT pin. For system implementations where the MPIC controller is not used, the Hawk internal error condition will be made available by a signal which is external to the Hawk ASIC. Presumably this signal will be connected to an externally sourced interrupt input of an MPIC controller of a different device. Since the MPIC specification defines external I/O interrupts to operate in the distributed mode, the delivery mode of this error interrupt should be consistent. http://www.motorola.com/computer/literature 2-55 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
Page 71 and 72: Block Diagram PCI Bus MPIC Interfac
Page 73 and 74: PPC Bus Interface Functional Descri
Page 75 and 76: 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: CSR’s Readability Multi-Processor
Page 127 and 128: 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
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Registers INV Invalidate Enable. If
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Conceptual perspective from the PCI
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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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