參數(shù)資料
型號: R8820LV
廠商: Electronic Theatre Controls, Inc.
英文描述: 16-BIT RISC MICROCONTROLLER
中文描述: 16位RISC微控制器
文件頁數(shù): 37/98頁
文件大?。?/td> 1000K
代理商: R8820LV
R DC
13. Interrupt Controller Unit
There are 16 interrupt requests source connect to the controller: 7 maskable interrupt pins ( INT0 – INT6); 2 non-maskable
RISC DSP Controller
R8820LV
RDC Semiconductor Co.
Rev:1.0
Subject to change without notice
37
interrupts (NMI pin , WDT) ; 7 internal unit request source ( Timer 0, 1,2 ;DMA 0,1 ; Asynchronous serial port 0, 1).
13.1 Master Mode and Slave Mode
The interrupt controller can be programmed as a master or slave mode. (program FEh , bit 14). The master mode has two
connections : Fully Nested Mode connection or Cascade Mode connection.
R8820LV
Interrupt Source
Interrupt Source
Interrupt Source
Interrupt Source
Interrupt Source
Interrupt Source
Interrupt Source
INT0
INT1
INT2
INT3
INT4
INT5
INT6
Fully Nested Mode Connections
Interrupt
Control
Logic
0
0
0
1
1
1
Master/Slave Mode Select
(FEH.14)
Timer0/1/2
Interrupt REQ.
Timer0 REQ.
INT0
Timer1 REQ.
Timer2 REQ.
DMA0 Interrupt REQ.
DMA1 Interrupt REQ.
INT2
INT3
INT4
Asynchronous Serial Port 0
Execation
Unit
Interrupt Type
Interrupt REQ.
In-Service
Register
EOI
Register
Acknowledge
Acknowledge to DMA,
Timer,Serial port Unit
Internal Address/Data Bus
16 Bit
16 Bit
Interrupt Control Unit Block Diagram
Asynchronous Serial Port 1
INT5
INT6
NMI
NMI
Watchdog Timer
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