HD6417751 Datasheet, PDF (9/1105 Pages) Renesas Technology Corp – SuperH RISC engine

4.5 Memory-Mapped Cache Configuration (SH7751)......................................................... 103
4.5.1 IC Address Array............................................................................................. 103
4.5.2 IC Data Array.................................................................................................. 104
4.5.3 OC Address Array ........................................................................................... 105
4.5.4 OC Data Array ................................................................................................ 106
4.6 Memory-Mapped Cache Configuration (SH7751R) ...................................................... 107
4.6.1 IC Address Array............................................................................................. 108
4.6.2 IC Data Array.................................................................................................. 109
4.6.3 OC Address Array ........................................................................................... 110
4.6.4 OC Data Array ................................................................................................ 111
4.6.5 Summary of Memory-Mapped OC Addresses .................................................. 112
4.7 Store Queues................................................................................................................ 113
4.7.1 SQ Configuration ............................................................................................ 113
4.7.2 SQ Writes........................................................................................................ 113
4.7.3 Transfer to External Memory ........................................................................... 113
4.7.4 Determination of SQ Access Exception............................................................ 115
4.7.5 SQ Read (SH7751R only)................................................................................ 115
4.7.6 SQ Usage Notes .............................................................................................. 116
Section 5 Exceptions ................................................................................................... 119
5.1 Overview ..................................................................................................................... 119
5.1.1 Features........................................................................................................... 119
5.1.2 Register Configuration..................................................................................... 119
5.2 Register Descriptions ................................................................................................... 120
5.3 Exception Handling Functions...................................................................................... 121
5.3.1 Exception Handling Flow ................................................................................ 121
5.3.2 Exception Handling Vector Addresses ............................................................. 121
5.4 Exception Types and Priorities ..................................................................................... 122
5.5 Exception Flow............................................................................................................ 125
5.5.1 Exception Flow ............................................................................................... 125
5.5.2 Exception Source Acceptance .......................................................................... 126
5.5.3 Exception Requests and BL Bit........................................................................ 128
5.5.4 Return from Exception Handling ..................................................................... 128
5.6 Description of Exceptions ............................................................................................ 128
5.6.1 Resets.............................................................................................................. 129
5.6.2 General Exceptions.......................................................................................... 134
5.6.3 Interrupts......................................................................................................... 148
5.6.4 Priority Order with Multiple Exceptions........................................................... 151
5.7 Usage Notes................................................................................................................. 152
5.8 Restrictions.................................................................................................................. 153
Section 6 Floating-Point Unit .................................................................................... 155
6.1 Overview ..................................................................................................................... 155
Rev. 3.0, 04/02, page vii of xxxviii