iii
5.3.2
Interrupt Control Register (ICR) ........................................................................... 75
5.4
Interrupt Operation ............................................................................................................. 76
5.4.1
Interrupt Sequence ................................................................................................ 76
5.4.2
Stack after Interrupt Exception Handling.............................................................. 78
5.5
Interrupt Response Time .................................................................................................... 79
5.6
Usage Notes........................................................................................................................ 80
Section 6
User Break Controller (UBC)
...................................................................... 81
6.1
Overview ............................................................................................................................ 81
6.1.1
Features ................................................................................................................. 81
6.1.2
Block Diagram ...................................................................................................... 82
6.1.3
Register Configuration .......................................................................................... 83
6.2
Register Descriptions.......................................................................................................... 84
6.2.1
Break Address Registers (BAR) ........................................................................... 84
6.2.2
Break Address Mask Register (BAMR)................................................................ 85
6.2.3
Break Bus Cycle Register (BBR).......................................................................... 86
6.3
Operation ............................................................................................................................ 88
6.3.1
Flow of User Break Operation .............................................................................. 88
6.3.2
Break on Instruction Fetch Cycles to On-Chip Memory ...................................... 90
6.3.3
Program Counter (PC) Value Saved in User Break Interrupt Exception
Processing.............................................................................................................. 90
6.4
Setting User Break Conditions ........................................................................................... 91
6.5
Notes................................................................................................................................... 92
6.5.1
On-Chip Memory Instruction Fetch...................................................................... 92
6.5.2
Instruction Fetch at Branches................................................................................ 92
6.5.3
Instruction Fetch Break ......................................................................................... 93
Section 7
Clock Pulse Generator (CPG)
...................................................................... 95
7.1
Overview ............................................................................................................................ 95
7.2
Clock Source ...................................................................................................................... 95
7.2.1
Connecting a Crystal Resonator............................................................................ 95
7.2.2
External Clock Input ............................................................................................. 97
7.3
Usage Notes........................................................................................................................ 98
Section 8
Bus State Controller (BSC)
.......................................................................... 101
8.1
Overview ............................................................................................................................ 101
8.1.1
Features ................................................................................................................. 101
8.1.2
Block Diagram ...................................................................................................... 102
8.1.3
Pin Configuration .................................................................................................. 103
8.1.4
Register Configuration .......................................................................................... 104
8.1.5
Overview of Areas ................................................................................................ 105
8.2
Register Descriptions.......................................................................................................... 107
8.2.1
Bus Control Register (BCR) ................................................................................. 107
Содержание HD6417032
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