SH7616 datasheet(12/935 Pages) RENESAS

12 / 935 page

Rev. 2.00 Mar 09, 2006 page xii of xxvi

2.6.2

When executing a combination of double-precision multiplication or

double-precision product-sum operation (CPU instruction) and DSP

computing instruction .......................................................................................... 105

Section 3 Oscillator Circuits and Operating Modes .................................................. 107

3.1

Overview........................................................................................................................... 107

3.2

On-Chip Clock Pulse Generator and Operating Modes .................................................... 107

3.2.1

Clock Pulse Generator ......................................................................................... 107

3.2.2

Clock Operating Mode Settings........................................................................... 109

3.2.3

Connecting a Crystal Resonator........................................................................... 112

3.2.4

External Clock Input ............................................................................................ 113

3.2.5

Operating Frequency Selection by Register......................................................... 114

3.2.6

Clock Modes and Frequency Ranges................................................................... 122

3.2.7

Notes on Board Design ........................................................................................ 123

3.3

Bus Width of the CS0 Area............................................................................................... 124

Section 4 Exception Handling ......................................................................................... 125

4.1

Overview........................................................................................................................... 125

4.1.1

Types of Exception Handling and Priority Order ................................................ 125

4.1.2

Exception Handling Operations ........................................................................... 127

4.1.3

Exception Vector Table ....................................................................................... 128

4.2

Resets ................................................................................................................................ 131

4.2.1

Types of Resets.................................................................................................... 131

4.2.2

Power-On Reset ................................................................................................... 131

4.2.3

Manual Reset ....................................................................................................... 132

4.3

Address Errors .................................................................................................................. 132

4.3.1

Sources of Address Errors ................................................................................... 132

4.3.2

Address Error Exception Handling ...................................................................... 134

4.4

Interrupts........................................................................................................................... 135

4.4.1

Interrupt Sources.................................................................................................. 135

4.4.2

Interrupt Priority Levels....................................................................................... 136

4.4.3

Interrupt Exception Handling............................................................................... 136

4.5

Exceptions Triggered by Instructions ............................................................................... 137

4.5.1

Instruction-Triggered Exception Types ............................................................... 137

4.5.2

Trap Instructions .................................................................................................. 137

4.5.3

Illegal Slot Instructions ........................................................................................ 138

4.5.4

General Illegal Instructions.................................................................................. 138

4.6

When Exception Sources Are Not Accepted .................................................................... 139

4.6.1

Immediately after a Delayed Branch Instruction ................................................. 139

4.6.2

Immediately after an Interrupt-Disabled Instruction............................................ 139

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