參數(shù)資料
型號: MB91V301A
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 68 MHz, RISC MICROCONTROLLER, CPGA179
封裝: CERAMIC, PGA-179
文件頁數(shù): 104/140頁
文件大?。?/td> 2841K
代理商: MB91V301A
MB91301 Series
66
DS07-16502-4E
3.
Interrupt Controller
The interrupt controller receives and processes interrupts.
Hardware Configuration
The interrupt controller consists of the following :
ICR register
Interrupt priority determination circuit
Interrupt level and interrupt number (vector) generator
Hold request removal request generator
Principal Functions
The main functions of the interrupt controller are as follows :
Detect NMI and interrupt requests
Prioritize interrupts (according to level and number)
Notify interrupt level of selected interrupt request (to CPU)
Notify interrupt number of selected interrupt request (to CPU)
If an NMI or interrupt request with an interrupt level other than "11111B" occurs, notify recovery from stop mode
(to CPU)
Generate hold request removal requests to the bus master
Block Diagram
(“1” when LEVEL
11111B)
Determine order of priority
NMI
processing
LEVEL
determination
VECTOR
determination
LEVEL,
VECTOR
genera-
tion
HLDREQ
removal
request
RI00
RI47
(DLYIRQ)
5
6
LEVEL4 to LEVEL0
MHALTI
VCT5 to VCT0
R-bus
UNMI
WAKEUP
ICR00
ICR47
(“1” when LEVEL
11111B)
Determine order of priority
NMI
processing
LEVEL
determination
VECTOR
determination
LEVEL,
VECTOR
genera-
tion
HLDREQ
removal
request
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