參數(shù)資料
型號(hào): M32000D3FP
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 66.6 MHz, RISC MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, 0.65 MM PITCH, PLASTIC, LQFP-100
文件頁數(shù): 115/155頁
文件大?。?/td> 1340K
代理商: M32000D3FP
4-26
M32000D3FP User's Manual
EIT
4.13 Interrupt controller example
When there are multiple peripheral circuits such as timers, serial I/Os or DMACs which can request an
interrupt, an external interrupt controller is necessary to control the interrupts.
4.13.1 Basic interrupt controller example
The figure below shows a basic type of interrupt controller for an M32000D3FP system. This interrupt
controller controls the mask for each of the interrupt requests, monitors status (request present/not present)
______
and generates the INT signal to the M32000D3FP. It supports up to a maximum of 8 interrupt factors. The
request input is fixed to the "L" level. The priority for competing interrupt requests is managed by software,
and interrupt request is cleared at the requesting source.
Fig. 4.13.1 Example of basic interrupt controller
INT0
peripheral ASIC etc.
INT
INT1
INT2
INT3
INT4
INT5
INT6
mask detection
INT7
interrupt mask
register
interrupt status
register
M32000D3FP
interrupt controller
address bus
data bus
bus control signal
23
16
11
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