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Interrupts
Am186™CC/CH/CU Microcontrollers User’s Manual
7-21
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The End-of-Interrupt (EOI) register is cleared, so no in-service bits are cleared.
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The Poll (POLL) and Poll Status (POLLST) registers are cleared, so Polling mode is
disabled.
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The Interrupt Mask (IMASK) register and Shared Mask (SHMASK) registers are set to
FFFFh, so all interrupts are masked.
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The PRM bits in the Priority Mask (PRIMSK) register are set to 7d, allowing interrupts
of all priorities.
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The In-Service (INSERV) register is cleared, indicating that no interrupts are active.
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The Interrupt Request (REQST), Interrupt Status (INTSTS), and Shared Request
(SHREQ) registers are cleared, indicating there are no pending interrupts.
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The DMA Halt (DMAHLT) register is cleared, so DMA activity is unaffected.
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All bits in the Interrupt Polarity (INTPOL) and PIO Polarity (PIOPOL) registers are set
to 1, so INT9–INT0 and PIO5, PIO15, PIO27, PIO29, PIO30, and PIO33–PIO35 are set
to be active High.
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Multiplexed signals INT8–INT6 default to PIO functionality as shown in Table 7-1 on
page 7-4.
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Multiplexed signals PIO15, PIO29, PIO30, and PIO33–PIO35 default to their alternate
functionality, as described in Chapter 9, “Programmable I/O Signals.”
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The IF flag in the FLAGS register is cleared, disabling maskable interrupts.
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...