
Rev. 6.0, 07/02, page xxiv of I
Section 6
6.1
6.2
Floating-Point Unit
........................................................................................ 161
Overview........................................................................................................................... 161
Data Formats..................................................................................................................... 161
6.2.1
Floating-Point Format.......................................................................................... 161
6.2.2
Non-Numbers (NaN)............................................................................................ 163
6.2.3
Denormalized Numbers........................................................................................ 164
Registers............................................................................................................................ 165
6.3.1
Floating-Point Registers....................................................................................... 165
6.3.2
Floating-Point Status/Control Register (FPSCR)................................................. 167
6.3.3
Floating-Point Communication Register (FPUL)................................................. 168
Rounding........................................................................................................................... 168
Floating-Point Exceptions................................................................................................. 169
Graphics Support Functions.............................................................................................. 170
6.6.1
Geometric Operation Instructions........................................................................ 170
6.6.2
Pair Single-Precision Data Transfer..................................................................... 172
6.3
6.4
6.5
6.6
Section 7
7.1
7.2
7.3
Instruction Set
.................................................................................................. 173
Execution Environment..................................................................................................... 173
Addressing Modes............................................................................................................. 175
Instruction Set ................................................................................................................... 179
Section 8
8.1
8.2
8.3
Pipelining
.......................................................................................................... 193
Pipelines............................................................................................................................ 193
Parallel-Executability........................................................................................................ 200
Execution Cycles and Pipeline Stalling............................................................................. 204
Section 9
9.1
Power-Down Modes
...................................................................................... 221
Overview........................................................................................................................... 221
9.1.1
Types of Power-Down Modes.............................................................................. 221
9.1.2
Register Configuration......................................................................................... 223
9.1.3
Pin Configuration................................................................................................. 223
Register Descriptions ........................................................................................................ 224
9.2.1
Standby Control Register (STBCR)..................................................................... 224
9.2.2
Peripheral Module Pin High Impedance Control................................................. 226
9.2.3
Peripheral Module Pin Pull-Up Control............................................................... 226
9.2.4
Standby Control Register 2 (STBCR2)................................................................ 227
9.2.5
Clock-Stop Register 00 (CLKSTP00) (SH7750R Only)...................................... 228
9.2.6
Clock-Stop Clear Register 00 (CLKSTPCLR00) (SH7750R Only) .................... 229
Sleep Mode........................................................................................................................ 230
9.3.1
Transition to Sleep Mode..................................................................................... 230
9.3.2
Exit from Sleep Mode.......................................................................................... 230
Deep Sleep Mode.............................................................................................................. 230
9.4.1
Transition to Deep Sleep Mode............................................................................ 230
9.2
9.3
9.4