SH7760 Datasheet, PDF (8/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

Contents
Section 1 Overview ...........................................................................................1
1.1 Features............................................................................................................................. 2
1.2 Block Diagram .................................................................................................................. 10
1.3 Pin Arrangement ............................................................................................................... 11
1.4 Pin Description.................................................................................................................. 12
1.5 Pin Function ...................................................................................................................... 21
Section 2 Programming Model..........................................................................29
2.1 Data Formats..................................................................................................................... 29
2.2 Register Descriptions ........................................................................................................ 30
2.2.1 Privileged Mode and Banks ................................................................................. 30
2.2.2 General Registers ................................................................................................. 33
2.2.3 Control Registers ................................................................................................. 34
2.2.4 System Registers.................................................................................................. 36
2.2.5 FPU Registers ...................................................................................................... 36
2.3 Memory-Mapped Registers............................................................................................... 36
2.4 Data Formats..................................................................................................................... 37
2.4.1 Data Format in Registers ..................................................................................... 37
2.4.2 Data Formats in Memory ..................................................................................... 37
2.5 Processing States............................................................................................................... 38
2.6 Processing Modes ............................................................................................................. 40
Section 3 Floating-Point Unit (FPU).................................................................41
3.1 Features............................................................................................................................. 41
3.2 Data Formats..................................................................................................................... 41
3.2.1 Floating-Point Format.......................................................................................... 41
3.2.2 Non-Numbers (NaN) ........................................................................................... 43
3.2.3 Denormalized Numbers ....................................................................................... 44
3.3 Register Descriptions ........................................................................................................ 45
3.3.1 Floating-Point Registers....................................................................................... 45
3.3.2 Floating-Point Status/Control Register (FPSCR)................................................. 47
3.3.3 Floating-Point Communication Register (FPUL) ................................................ 48
3.4 Rounding........................................................................................................................... 49
3.5 Floating-Point Exceptions................................................................................................. 49
3.5.1 General FPU Disable Exceptions and Slot FPU Disable Exceptions................... 49
3.5.2 FPU Exception Sources ....................................................................................... 49
3.5.3 FPU Exception Handling ..................................................................................... 50
3.6 Graphics Support Functions.............................................................................................. 52
3.6.1 Geometric Operation Instructions........................................................................ 52
Rev. 1.0, 02/03, page vi of xlviii