Hitachi SH7750 Hardware Manual page 24

Section 6 Floating-Point Unit
6.1 Overview........................................................................................................................... 161
6.2 Data Formats..................................................................................................................... 161
6.2.1 Floating-Point Format.......................................................................................... 161
6.2.2 Non-Numbers (NaN) ........................................................................................... 163
6.2.3 Denormalized Numbers ....................................................................................... 164
6.3 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
6.4 Rounding........................................................................................................................... 168
6.5 Floating-Point Exceptions................................................................................................. 169
6.6 Graphics Support Functions.............................................................................................. 170
6.6.1 Geometric Operation Instructions........................................................................ 170
6.6.2 Pair Single-Precision Data Transfer..................................................................... 172
Section 7 Instruction Set
7.1 Execution Environment .................................................................................................... 173
7.2 Addressing Modes ............................................................................................................ 175
7.3 Instruction Set ................................................................................................................... 179
Section 8 Pipelining
8.1 Pipelines............................................................................................................................ 193
8.2 Parallel-Executability........................................................................................................ 200
8.3 Execution Cycles and Pipeline Stalling ............................................................................ 204
Section 9 Power-Down Modes
9.1 Overview........................................................................................................................... 221
9.1.1 Types of Power-Down Modes ............................................................................. 221
9.1.2 Register Configuration......................................................................................... 223
9.1.3 Pin Configuration................................................................................................. 223
9.2 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
9.3 Sleep Mode ....................................................................................................................... 230
9.3.1 Transition to Sleep Mode..................................................................................... 230
9.3.2 Exit from Sleep Mode.......................................................................................... 230
9.4 Deep Sleep Mode.............................................................................................................. 230
9.4.1 Transition to Deep Sleep Mode ........................................................................... 230
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