
Rev. 4.00, 03/04, page xxiii of xlvi
Section 5 Cache................................................................................................. 99
5.1
Feature...............................................................................................................................
5.1.1
Cache Structure....................................................................................................
5.2
Register Description.......................................................................................................... 101
5.2.1
Cache Control Register (CCR) ............................................................................ 101
5.2.2
Cache Control Register 2 (CCR2)........................................................................ 102
5.3
Operation........................................................................................................................... 104
5.3.1
Searching the Cache............................................................................................. 104
5.3.2
Read Access......................................................................................................... 105
5.3.3
Prefetch Operation............................................................................................... 106
5.3.4
Write Access........................................................................................................ 106
5.3.5
Write-Back Buffer ............................................................................................... 106
5.3.6
Coherency of Cache and External Memory......................................................... 107
5.4
Memory-Mapped Cache.................................................................................................... 107
5.4.1
Address Array...................................................................................................... 107
5.4.2
Data Array............................................................................................................ 108
5.4.3
Usage Examples................................................................................................... 110
99
99
Section 6 Interrupt Controller (INTC).............................................................. 111
6.1
Feature............................................................................................................................... 111
6.2
Input/Output Pin................................................................................................................ 113
6.3
Interrupt Sources............................................................................................................... 113
6.3.1
NMI Interrupts..................................................................................................... 113
6.3.2
IRQ Interrupt........................................................................................................ 114
6.3.3
IRL Interrupts....................................................................................................... 115
6.3.4
On-Chip Peripheral Module Interrupts ................................................................ 116
6.3.5
Interrupt Exception Processing and Priority........................................................ 117
6.4
Register Description.......................................................................................................... 121
6.4.1
Interrupt Priority Registers A to E (IPRA to IPRE)............................................. 121
6.4.2
Interrupt Control Register 0 (ICR0)..................................................................... 122
6.4.3
Interrupt Control Register 1 (ICR1)..................................................................... 123
6.4.4
Interrupt Request Register 0 (IRR0).................................................................... 125
6.4.5
Interrupt Request Register 1 (IRR1).................................................................... 127
6.4.6
Interrupt Request Register 2 (IRR2).................................................................... 128
6.5
Operation........................................................................................................................... 129
6.5.1
Interrupt Sequence............................................................................................... 129
6.5.2
Multiple Interrupts............................................................................................... 131
6.6
Interrupt Response Time................................................................................................... 132
Section 7 User Break Controller....................................................................... 135
7.1
Feature............................................................................................................................... 135
7.2
Register Description.......................................................................................................... 137
7.2.1
Break Address Register A (BARA)..................................................................... 137