SH7727 Datasheet, PDF (34/1109 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

3.3 TLB Functions .................................................................................................................. 105
3.3.1 Configuration of the TLB .................................................................................... 105
3.3.2 TLB Indexing....................................................................................................... 107
3.3.3 TLB Address Comparison ................................................................................... 108
3.3.4 Page Management Information ............................................................................ 110
3.4 MMU Functions................................................................................................................ 111
3.4.1 MMU Hardware Management ............................................................................. 111
3.4.2 MMU Software Management .............................................................................. 111
3.4.3 MMU Instruction (LDTLB)................................................................................. 112
3.4.4 Avoiding Synonym Problems .............................................................................. 113
3.5 MMU Exceptions.............................................................................................................. 116
3.5.1 TLB Miss Exception ............................................................................................ 116
3.5.2 TLB Protection Violation Exception ................................................................... 117
3.5.3 TLB Invalid Exception......................................................................................... 118
3.5.4 Initial Page Write Exception ................................................................................ 119
3.5.5 Processing Flow in Event of MMU Exception (Same Processing Flow
for Address Error) ................................................................................................ 121
3.5.6 MMU Exception in Repeat Loop......................................................................... 123
3.6 Memory-Mapped TLB...................................................................................................... 124
3.6.1 Address Array ...................................................................................................... 125
3.6.2 Data Array............................................................................................................ 125
3.6.3 Usage Examples................................................................................................... 127
3.7 Usage Notes ...................................................................................................................... 128
Section 4 Exception Handling ......................................................................................... 131
4.1 Overview........................................................................................................................... 131
4.1.1 Features................................................................................................................ 131
4.1.2 Register Configuration......................................................................................... 131
4.2 Exception Handling Function ........................................................................................... 131
4.2.1 Exception Handling Flow .................................................................................... 131
4.2.2 Exception Handling Vector Addresses ................................................................ 132
4.2.3 Acceptance of Exceptions.................................................................................... 134
4.2.4 Exception Codes .................................................................................................. 136
4.2.5 Exception Request Masks .................................................................................... 137
4.2.6 Returning from Exception Handling.................................................................... 138
4.3 Register Description.......................................................................................................... 138
4.4 Exception Handling Operation.......................................................................................... 139
4.4.1 Reset..................................................................................................................... 139
4.4.2 Interrupts.............................................................................................................. 139
4.4.3 General Exceptions .............................................................................................. 140
4.5 Individual Exception Operations....................................................................................... 140
Rev. 5.00 Dec 12, 2005 page xxxiv of lxxii