Interrupts
Am186™CC/CH/CU Microcontrollers User’s Manual
7-3
Figure 7-1
Interrupts Block Diagram
7.3
SYSTEM DESIGN
Table 7-1 lists the interrupt signals that are multiplexed with other microcontroller functions.
Pinstraps are sampled only at external reset and do not affect the pin’s other functions, so
they are not shown in this table. Other multiplexed signals, when enabled, either disable or
alter any other functions that use the same pin.
For diagrams of some example applications, see Chapter 3, “System Overview.”
Watchdog Timer
Interrupt
Controller
Execution Unit/
External NMI
Internal NMI
INT request
Control
Priority
Bus Grant
Bus Request
Interrupt State
EOI
Execution Unit
Notes:
1. Software interrupt and traps are generated and resolved within the execution unit.
Interrupt Sources
Timers (3)
INT8/PWD (1)
INT7–INT0 (8)
PIO5, 15, 27, 29, 30, 33, 34, 35 (8)
General-Purpose DMAs (4)
High-Speed UART (1)
UART (1)
HDLCs (4)
GCI (1)
SmartDMAs (4)
USB (1)
HDLCs (2)
SmartDMAs (2)
USB (1)
SmartDMAs (2)
CC
CH
CU
Bus Interface
1
Summary of Contents for Am186 CC
Page 1: ...Am186 CC CH CU Microcontrollers User s Manual Order 21914B...
Page 4: ...iv Am186 CC CH CU Microcontrollers User s Manual...
Page 18: ...Table of Contents xviii Am186 CC CH CU Microcontrollers User s Manual...
Page 24: ...Introduction xxiv Am186 CC CH CU Microcontrollers User s Manual...
Page 40: ...Architectural Overview 1 16 Am186 CC CH CU Microcontrollers User s Manual...
Page 86: ...System Overview 3 36 Am186 CC CH CU Microcontrollers User s Manual...
Page 92: ...Emulator Support 4 6 Am186 CC CH CU Microcontrollers User s Manual...
Page 112: ...DRAM Controller 6 8 Am186 CC CH CU Microcontrollers User s Manual...
Page 134: ...Interrupts 7 22 Am186 CC CH CU Microcontrollers User s Manual...
Page 186: ...Programmable I O Signals 9 8 Am186 CC CH CU Microcontrollers User s Manual...
Page 200: ...Watchdog Timer 11 6 Am186 CC CH CU Microcontrollers User s Manual...
Page 232: ...Asynchronous Serial Ports UARTs 13 24 Am186 CC CH CU Microcontrollers User s Manual...
Page 242: ...Synchronous Serial Port SSI 14 10 Am186 CC CH CU Microcontrollers User s Manual...
Page 264: ...High Level Data Link Control HDLC 15 22 Am186 CC CH CU Microcontrollers User s Manual...
Page 332: ...Universal Serial Bus USB 18 34 Am186 CC CH CU Microcontrollers User s Manual...
Page 348: ...Register Summary A 16 Am186 CC CH CU Microcontrollers User s Manual...
Page 376: ...Index Index 18 Am186 CC CH CU Microcontrollers User s Manual...