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Intel Pentium User Manual

Intel Pentium User Manual (480 pages)

Volume 2: 82496 Cache Controller and 82491 Cache SRAM data book

Brand: Intel | Category: Computer Hardware | Size: 23.84 MB

Table of Contents

Table of Contents

8
Table of Contents

17
- Table Title Page
  18
- Chapter 1 Pinouts
  
  22
  - Pentium™ Processor Pinouts
    22
  - Pinout Diagrams
    22
  - 82496 Cache Controller Pinouts
    24
  - 82491 Cache SRAM Memory Pinouts
    26
  - Mooe
    27
  - Pentium Processor
    28
    
    Pentium™ Processor Pin Cross Reference by Pin Name
    28
    
    Pentium™ Processor/Mbc Interface Signals
    28
  - Pin Cross Reference Tables
    28
  - 82496 Cache Controller
    30
  - 82491 Cache SRAM
    33
  - BRIEF PIN Descriptions
    33
  - Meoc
    33
  - Mfrz
    33
  - Mhitm
    36
  - Mistb
    36
  - Mken
    36
  - Moclk
    36
  - Mro
    36
  - Msel
    36
  - Mthit
    36
  - Mwb/Wt
    36
    
    Pentium™ Processor/82496 Cache Controller Interface Signals
    36
    
    Pentium™ Processor/82491 Cache SRAM Interface Signals
    36
  - Pentium™ Processor CPU-Cache Chip Set Brief Pin Descriptions
    37
  - Mx4/8
    50
  - Mzbt
    52
    
    Pentium™ Processor CPU-Cache Chip Set Internal Pull-Up Resistors
    57
  - Pentium™ Processor CPU-Cache Chip Set Glitch Free Pins
    57
  - Pentium™ Processor CPU-Cache Chip Set Internal Pull-Down Resistors
    57
  - Signal Interconnects on Optimized Interface
    59
  - Pin States During RESET
    60
  - Pentium™ Processor CPU-Cache Chip Set Output Pins
    61
  - Nene
    63
  - Pentium™ Processor CPU-Cache Chip Set Input Pins
    64
  - Nmi
    66
  - Par
    66
  - Snpinv
    66
  - Snpnca
    66
  - Snpstb
    66
  - Sweno
    66
  - Sync
    66
  - Tck
    66
  - Tms
    66
  - Toi
    66
  - Trst
    67
  - W/R
    67
  - Way
    67
  - Wb/Wt
    67
    
    Pentium™ Processor CPU-Cache Chip Set Input/Output Pins
    68
- Chapter 2 Cache Architecture Overview
  
  70
  - 82496 Cache Controller
    73
  - Cpu/Cache Core Description
    73
  - Main Features
    73
  - 82491 Cache Srams
    74
  - Memory Bus Controller
    75
  - Configuration
    76
  - Physical Cache
    76
  - Clocked (Asynchronous) Snoop Mode
    77
  - Memory Bus Modes
    77
  - Snoop Modes
    77
  - Strobed Snoop Mode
    77
  - Synchronous Snoop Mode
    77
  - Clocked Memory Bus Mode
    78
  - Pentium Processor Bus Interface
    78
  - Strobed Memory Bus Mode
    78
  - 82496 Cache Controller/82491 Cache Sram Optimized Interface
    79
  - Memory Bus Interface
    79
  - Snooping Logic
    79
    
    Pentium™ Processor Signals Latched in the 82496 Cache Controller and 82491 Cache SRAM
    79
  - Cycle Control Logic
    80
  - Test
    80
- Chapter 3 Component Operation
  
  82
- Chapter 4 Cache Initialization and Configuration
  
  108
  - Configuration Signal Sampling During Reset
    111
  - Initialization Required for Chip Set Mode
    112
  - Memory Bus Width
    113
  - Physical Cache
    113
  - Line Ratio
    114
  - Tagram Size
    114
  - Tagram Structure
    114
  - Lines Per Sector (LIS)
    115
  - Cache Size
    116
  - Configurable Address Connections
    116
  - 82491 Cache SRAM Bus Configuration
    117
  - 4.2.10. CPU to 82491 Cache SRAM Address Configurations
    118
  - 82491 Cache SRAM Parity Configuration
    118
  - 4.2.11. Bus Driver Buffer Selection
    119
  - Cache Modes
    119
  - Memory Bus Modes
    119
  - Clocked Mode
    120
  - Configuration of Memory Bus Mode
    120
  - Snoop Modes
    120
  - Strobed Mode
    120
  - Configuration of Snoop Mode
    121
  - Description
    121
  - Strong/Weak Write Ordering
    121
  - Configuration
    122
  - HARDWARE INTERFACE Page
    124
  - MEMORY BUS CONTROLLER Considerations
    126
  - Cycle Control
    127
  - IDENTIFYING and EXECUTING Cycles
    129
  - Cacheable Read Miss
    131
  - Read Hit
    131
  - Non-Cacheable Read Miss
    132
  - Write Hit Lsi
    132
  - Write Hit [EJ, [M]
    132
  - Write Miss: no Allocation, Allocation
    132
  - Locked
    133
  - Replacement
    133
  - Snoop Write Back
    133
  - Cache-To-Cache Transfer
    134
  - Read for Ownership
    134
  - 1/0 Cycles
    135
  - FLUSH and SYNC Cycles
    135
  - Special Cycles
    135
  - Choosing a Snooping Mode
    136
  - Snooping
    136
  - Synchronous Snooping Mode
    136
  - Asynchronous Snooping Mode
    137
  - Strobed Snooping Mode
    138
  - Snoop Operation
    139
  - Snoop Blocking
    142
  - When Snooping Is Not Allowed
    144
  - SNOOPING DURING LOCKED Cycles
    145
  - SNOOP WRITE BACK Cycles
    146
  - Snooping During Split Locked Cycles
    146
  - Address Integrity
    147
  - Cpu Bus Address Parity
    147
  - Memory Bus Address Parity
    147
  - Data Control
    148
  - Cpu Data Bus Transfer Control
    149
  - Memory Bus Mode Selection
    149
  - 82491 Cache SRAM Intelligent Dual-Ported Cache Memory
    150
  - 82491 Cachesramdatapath
    150
  - Memory Cycle Buffers
    151
  - Write-Back and Snoop Buffers
    151
  - MEMORY BUS CONTROL Signals
    152
  - 82491 CACHE SRAM PARITY Devices
    153
  - Signal Synchronization
    154
  - Handling of Large Caches I Larger Line Sizes
    155
  - Warm Reset
    155
  - 5.1.10. 82496 Cache Controller Guaranteed Signal Relationships
    156
  - 5.1.11. 82496 Cache Controller Cycle Progress Requirements
    157
  - 82496 Cache Controller and 82491 Cache SRAM CRDY# Requirements
    157
  - 82496 Cache Controller Input Signal Recognition Requirements
    157
  - 82496 Cache Controller Cycle Attribute Sampling Requirements
    158
  - Pentium Processor, 82496 Cache Controller, and 82491 Cache SRAM BRDY# Requirements
    158
  - 82496 Cache Controller Cycle Progress Signal Sampling Requirements
    159
  - 5.1.17. 82491 Cache SRAM Data Control Signal Requirements
    160
  - 5.1.18. Semaphore (Strong Write Ordering) Consistency
    160
  - CONFIGURATION Signals
    161
  - CYCLE ATTRIBUTE / PROGRESS Signals
    161
  - Cycle Control Signals
    161
  - Detailed Pentium Processor Cpu-Cache Chip Set Pin Descriptions
    161
  - Signal/Category Cross-Reference
    161
  - SNOOPING Signals
    161
  - 82496 Cache Controller/82491 Cache Sram Optimized Interface Signals
    162
  - Cache Synchronization Signals
    162
  - CPU Signals
    162
  - Memory Address Bus and Address Control Signals
    162
  - Memory Data Bus and Data Control Signals
    162
  - PENTIUM PROCESSOR BUS OPTIMIZED INTERFACE Signals
    162
  - Test Signals
    162
  - Pentium Processor CPU-Cache Chip Set Detailed Pin Descriptions
    163
  - A20M
    164
  - Ads
    165
  - Adsc
    166
  - Ahold
    167
  - Apchk
    169
  - Aperr
    170
  - Apic
    171
  - Be#,Be[7:0]
    172
  - Bgt
    173
  - Blast
    175
  - Ble
    176
  - Blec
    177
  - Boff
    179
  - Bp[3:2], Pm/Bp[1 :0]
    180
  - Brdy
    181
  - Brdyc
    183
  - Brdyc1
    184
  - Brdyc2
    185
  - Breq
    186
  - Bt[3:0]
    187
  - Bus
    188
  - Buschk
    189
  - Cache
    190
  - Cads
    191
  - Cahold
    193
  - Ccache
    194
  - CD/C
    195
  - Cdata[7:0]
    196
  - Cdts
    197
  - Cfa[6:0],Set[1 0:0],Tag[11 :0]
    199
  - Cfg[2:0]
    200
  - Cldrv
    201
  - Clk
    202
  - CM/Io
    203
  - Cna
    204
  - Cpcd
    205
  - Cpwt
    206
  - Crdy
    207
  - Cscyc
    209
  - Cw/R
    210
  - Cway
    211
  - D/C
    212
  - D[63:0]
    213
  - Dp[7:0]
    214
  - Drctm
    215
  - Eads
    217
  - Ewbe
    218
  - Ferr
    219
  - Flush
    220
  - Frcmc
    222
  - Fsiout
    223
  - Highz
    225
  - Hit
    226
  - Hitm
    227
  - Hlda
    228
  - Hold
    229
  - Ibt
    230
  - Ierr
    231
  - Ignne
    232
  - Init
    233
  - Intr
    234
  - Inv
    235
  - Iperr
    236
  - Ken
    239
  - Klock
    241
  - Kwend
    243
  - Lock
    245
  - Lr[1 :0]
    246
  - M/Io
    247
  - Maldrv
    248
  - Male
    249
  - Maoe
    250
  - Map
    252
  - Maperr
    253
  - Mawea
    254
  - Mbale
    255
  - Mbaoe
    256
  - Mbe
    258
  - Mbrdy
    260
  - Mbt[3:0]
    262
  - Mcache
    264
  - Mcfa[6:0]. Mset[10:0]. Mtag[11 :0]
    266
    
    Mclk
    268
  - Mcyc
    269
    
    Mdata[7:0]
    270
  - Mdldrv
    272
  - Wba
    339
  - Wbtyp
    340
  - Wbwe
    341
  - Wrarr
    342
  - Wwor
    343
- Chapter 6 Memory Bus Functional Description
  
  344
  - READ Cycles
    346
  - Read Hit Cycles
    346
  - Read Miss Cycles
    349
  - With Clean Replacement
    349
  - With Replacement of Modified Line
    352
  - Non Cacheable Read Miss Cycles
    354
  - WRITE Cycles
    355
  - Write Miss with Allocation Cycles
    359
  - Locked Read-Modify-Write Cycles
    361
- Chapter 7 Electrical Specifications
  
  370
  - Connection Specifications
    370
  - Decoupling Recommendations
    370
  - Maximum Ratings
    370
  - Power and Ground
    370
  - Specifications
    371
  - Optimized Interface
    373
  - Specifications
    373
  - Flight Time Specification
    374
  - Signal Quality
    374

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