iii
5.1.3
Register Configuration .......................................................................................... 109
5.2
Register Description ........................................................................................................... 109
5.2.1
Cache Control Register (CCR).............................................................................. 109
5.2.2
Cache Control Register 2 (CCR2) ........................................................................ 110
5.3
Cache Operation ................................................................................................................. 113
5.3.1
Searching the Cache.............................................................................................. 113
5.3.2
Read Access .......................................................................................................... 115
5.3.3
Prefetch Operation ................................................................................................ 115
5.3.4
Write Access ......................................................................................................... 115
5.3.5
Write-Back Buffer................................................................................................. 115
5.3.6
Coherency of Cache and External Memory .......................................................... 116
5.4
Memory-Mapped Cache ..................................................................................................... 116
5.4.1
Address Array ....................................................................................................... 116
5.4.2
Data Array ............................................................................................................. 117
5.4.3
Examples of Usage................................................................................................ 119
Section 6
Interrupt Controller (INTC)
.......................................................................... 121
6.1
Overview ............................................................................................................................ 121
6.1.1
Features ................................................................................................................. 121
6.1.2
Block Diagram ...................................................................................................... 122
6.1.3
Pin Configuration .................................................................................................. 123
6.1.4
Register Configuration .......................................................................................... 124
6.2
Interrupt Sources ................................................................................................................ 125
6.2.1
NMI Interrupt ........................................................................................................ 125
6.2.2
IRQ Interrupts ....................................................................................................... 125
6.2.3
IRL Interrupts........................................................................................................ 126
6.2.4
PINT Interrupts ..................................................................................................... 128
6.2.5
On-Chip Peripheral Module Interrupts ................................................................. 128
6.2.6
Interrupt Exception Handling and Priority............................................................ 129
6.3
INTC Registers ................................................................................................................... 135
6.3.1
Interrupt Priority Registers A to E (IPRA–IPRE) ................................................. 135
6.3.2
Interrupt Control Register 0 (ICR0)...................................................................... 136
6.3.3
Interrupt Control Register 1 (ICR1)...................................................................... 137
6.3.4
Interrupt Control Register 2 (ICR2)...................................................................... 140
6.3.5
PINT Interrupt Enable Register (PINTER) ........................................................... 141
6.3.6
Interrupt Request Register 0 (IRR0) ..................................................................... 142
6.3.7
Interrupt Request Register 1 (IRR1) ..................................................................... 144
6.3.8
Interrupt Request Register 2 (IRR2) ..................................................................... 145
6.4
INTC Operation.................................................................................................................. 147
6.4.1
Interrupt Sequence ................................................................................................ 147
6.4.2
Multiple Interrupts ................................................................................................ 149
6.5 Interrupt Response Time ......................................................................................................... 149
Содержание SH7709S
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