
Rev. 3.0, 04/02, page vii of xxxviii
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
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
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
4.6
4.7
Section 5
5.1
Exceptions
................................................................................................... 119
Overview..................................................................................................................... 119
5.1.1
Features........................................................................................................... 119
5.1.2
Register Configuration..................................................................................... 119
Register Descriptions................................................................................................... 120
Exception Handling Functions...................................................................................... 121
5.3.1
Exception Handling Flow ................................................................................ 121
5.3.2
Exception Handling Vector Addresses............................................................. 121
Exception Types and Priorities..................................................................................... 122
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
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
Usage Notes................................................................................................................. 152
Restrictions.................................................................................................................. 153
5.2
5.3
5.4
5.5
5.6
5.7
5.8
Section 6
6.1
Floating-Point Unit
.................................................................................... 155
Overview..................................................................................................................... 155