SH7708 Datasheet, PDF (10/633 Pages) Renesas Technology Corp – SuperH™ RISC engine

3.3.4 Page Management Information ............................................................................ 65
3.4 MMU Functions ................................................................................................................ 66
3.4.1 MMU Hardware Management ............................................................................. 66
3.4.2 MMU Software Management............................................................................... 66
3.4.3 MMU Instruction (LDLTB) ................................................................................. 67
3.4.4 Avoiding Synonym Problems .............................................................................. 68
3.5 MMU Exceptions .............................................................................................................. 70
3.5.1 TLB Miss Exception ............................................................................................ 70
3.5.2 TLB Protection Violation Exception.................................................................... 71
3.5.3 TLB Invalid Exception ......................................................................................... 72
3.5.4 Initial Page Write Exception ................................................................................ 73
3.5.5 Processing Flow in Event of MMU Exception
(Same Processing Flow for Address Error).......................................................... 75
3.6 Memory-Mapped TLB ...................................................................................................... 77
3.6.1 Address Array ...................................................................................................... 77
3.6.2 Data Array ............................................................................................................ 78
3.6.3 Usage Examples ................................................................................................... 80
3.7 Usage Note ........................................................................................................................ 80
Section 4 Exception Handling.......................................................................................... 81
4.1 Overview............................................................................................................................ 81
4.1.1 Features ................................................................................................................ 81
4.1.2 Register Configuration ......................................................................................... 81
4.2 Exception Handling Function............................................................................................ 81
4.2.1 Exception Handling Flow..................................................................................... 81
4.2.2 Exception Handling Vector Addresses ................................................................ 82
4.2.3 Acceptance of Exceptions .................................................................................... 84
4.2.4 Exception Codes................................................................................................... 86
4.2.5 Exception Request Masks .................................................................................... 87
4.2.6 Returning from Exception Handling .................................................................... 88
4.3 Register Description .......................................................................................................... 88
4.4 Exception Handler Operation ............................................................................................ 89
4.4.1 Reset ..................................................................................................................... 89
4.4.2 Interrupts .............................................................................................................. 89
4.4.3 General Exceptions .............................................................................................. 89
4.5 Individual Exception Operations ....................................................................................... 90
4.5.1 Resets.................................................................................................................... 90
4.5.2 General Exceptions .............................................................................................. 91
4.5.3 Interrupts .............................................................................................................. 94
4.6 Cautions ............................................................................................................................. 95
Section 5 Cache .................................................................................................................... 97
5.1 Overview............................................................................................................................ 97
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