HD6417751 Datasheet, PDF (10/1105 Pages) Renesas Technology Corp – SuperH RISC engine

6.2 Data Formats ............................................................................................................... 155
6.2.1 Floating-Point Format...................................................................................... 155
6.2.2 Non-Numbers (NaN) ....................................................................................... 157
6.2.3 Denormalized Numbers ................................................................................... 158
6.3 Registers...................................................................................................................... 159
6.3.1 Floating-Point Registers .................................................................................. 159
6.3.2 Floating-Point Status/Control Register (FPSCR) .............................................. 161
6.3.3 Floating-Point Communication Register (FPUL).............................................. 162
6.4 Rounding..................................................................................................................... 162
6.5 Floating-Point Exceptions ............................................................................................ 163
6.6 Graphics Support Functions ......................................................................................... 164
6.6.1 Geometric Operation Instructions .................................................................... 164
6.6.2 Pair Single-Precision Data Transfer ................................................................. 166
Section 7 Instruction Set............................................................................................. 167
7.1 Execution Environment................................................................................................ 167
7.2 Addressing Modes ....................................................................................................... 169
7.3 Instruction Set.............................................................................................................. 173
Section 8 Pipelining..................................................................................................... 187
8.1 Pipelines...................................................................................................................... 187
8.2 Parallel-Executability................................................................................................... 194
8.3 Execution Cycles and Pipeline Stalling......................................................................... 198
Section 9 Power-Down Modes.................................................................................. 215
9.1 Overview..................................................................................................................... 215
9.1.1 Types of Power-Down Modes.......................................................................... 215
9.1.2 Register Configuration..................................................................................... 217
9.1.3 Pin Configuration ............................................................................................ 217
9.2 Register Descriptions ................................................................................................... 218
9.2.1 Standby Control Register (STBCR) ................................................................. 218
9.2.2 Peripheral Module Pin High Impedance Control .............................................. 220
9.2.3 Peripheral Module Pin Pull-Up Control............................................................ 220
9.2.4 Standby Control Register 2 (STBCR2)............................................................. 221
9.2.5 Clock Stop Register 00 (CLKSTP00)............................................................... 222
9.2.6 Clock Stop Clear Register 00 (CLKSTPCLR00) .............................................. 223
9.3 Sleep Mode.................................................................................................................. 224
9.3.1 Transition to Sleep Mode................................................................................. 224
9.3.2 Exit from Sleep Mode...................................................................................... 224
9.4 Deep Sleep Mode......................................................................................................... 224
9.4.1 Transition to Deep Sleep Mode........................................................................ 224
9.4.2 Exit from Deep Sleep Mode............................................................................. 225
9.5 Pin Sleep Mode............................................................................................................ 225
Rev. 3.0, 04/02, page viii of xxxviii