Freescale Semiconductor MPC5200B ユーザーズマニュアル

Freescale Semiconductor

7-1

The following sections are contained in this document:

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, includes:

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, includes:

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, includes:

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Watchdog timer functions are included in the GPT section.

The System Integration Unit (SIU) controls and support the functions listed above.

A highly configurable Interrupt Controller directs all interrupt sources to the following e300 core interrupt pins:

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core_cint -- critical interrupt

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core_smi -- system management interrupt

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core_int -- standard interrupt

The Interrupt Controller MUXes a variety of interrupt sources to the limited interrupt pins on the e300 core. The interrupt sources and their 
descriptions are summarized in 

External IRQ 

Interrupts

4

Can be programmed as level or edge sensitive. Provides interrupt requests to 
Interrupt Controller for external devices.

Slice Timers

2

“Tick” generators. Suitable for operating system update tick.

General Timers

8

Generates interrupt in Input Capture mode or Internal Timer mode. Timers 6 and 7 
can interrupt from NAP/DOZE power-down.

BestComm and

Peripherals

19

Various peripherals are priority programmed and encoded into HI or LO interrupt to 
the Interrupt Controller. BestComm Controller interrupt is connected to HI interrupt.

RTC

2

Stopwatch and periodic

WakeUp

8

These are special GPIO pins with WakeUP capability. There are 8 such pins 
funneled into one interrupt. The source module is gpio_wkup. 

GPIO

8

GPIO pins with simple interrupt capability (not available in power down mode). The 
source module is gpio_std.

WatchDog Timer

0

No vector handler, generates 

SRESET output indication.

Total

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