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SH7201 Datasheet(PDF) 10 Page - Renesas Technology Corp |
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SH7201 Datasheet(HTML) 10 Page - Renesas Technology Corp |
10 / 1196 page Rev. 2.00 Sep. 07, 2007 Page x of xxviii Section 3 Floating-Point Unit (FPU)................................................................... 63 3.1 Features................................................................................................................................ 63 3.2 Data Formats........................................................................................................................ 63 3.2.1 Floating-Point Format............................................................................................. 63 3.2.2 Non-Numbers (NaN) .............................................................................................. 65 3.2.3 Denormalized Numbers .......................................................................................... 66 3.3 Register Descriptions ...........................................................................................................67 3.3.1 Floating-Point Registers ......................................................................................... 67 3.3.2 Floating-Point Status/Control Register (FPSCR) ................................................... 68 3.3.3 Floating-Point Communication Register (FPUL) ................................................... 69 3.4 Rounding.............................................................................................................................. 70 3.5 Floating-Point Exceptions.................................................................................................... 71 3.5.1 FPU Exception Sources .......................................................................................... 71 3.5.2 FPU Exception Handling ........................................................................................ 71 Section 4 Clock Pulse Generator (CPG) ............................................................. 73 4.1 Features................................................................................................................................ 73 4.2 Input/Output Pins................................................................................................................. 76 4.3 Clock Operating Modes ....................................................................................................... 77 4.4 Register Descriptions ...........................................................................................................83 4.4.1 Frequency Control Register (FRQCR) ................................................................... 83 4.4.2 CKIO Control Register (CKIOCR) ........................................................................ 86 4.5 Changing the Frequency ...................................................................................................... 87 4.5.1 Changing the Multiplication Rate ........................................................................... 87 4.5.2 Changing the Division Ratio................................................................................... 88 4.6 Notes on Board Design ........................................................................................................ 88 4.6.1 Note on Inputting External Clock ........................................................................... 88 4.6.2 Note on Using Crystal Resonator ........................................................................... 89 4.6.3 Note on Resonator .................................................................................................. 89 4.6.4 Note on Using a PLL Oscillation Circuit................................................................ 90 4.6.5 Note on Changing the Multiplication Rate ............................................................. 90 Section 5 Exception Handling ............................................................................. 91 5.1 Overview.............................................................................................................................. 91 5.1.1 Types of Exception Handling and Priority ............................................................. 91 5.1.2 Exception Handling Operations.............................................................................. 93 5.1.3 Exception Handling Vector Table .......................................................................... 95 5.2 Resets................................................................................................................................... 97 5.2.1 Input/Output Pins.................................................................................................... 97 |
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