參數(shù)資料
型號： MC56F8014MFAE
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 數(shù)字信號處理
英文描述： 0-BIT, 8 MHz, OTHER DSP, PQFP32
封裝： ROHS COMPLIANT, PLASTIC, LQFP-32
文件頁數(shù)： 64/124頁
文件大?。?/td> 1681K
代理商： MC56F8014MFAE
56F8014 Technical Data, Rev. 11
44
Freescale Semiconductor
restart the clocks and service the IRQ. An IRQ can only wake the core if the IRQ is enabled prior to
entering wait or stop mode.
5.3.1
Normal Interrupt Handling
Once the INTC has determined that an interrupt is to be serviced and which interrupt has the highest
priority, an interrupt vector address is generated. Normal interrupt handling concatenates the Vector Base
Address (VBA) and the vector number to determine the vector address, generating an offset into the vector
table for each interrupt.
5.3.2
Interrupt Nesting
Interrupt exceptions may be nested to allow an IRQ of higher priority than the current exception to be
serviced. The following table defines the nesting requirements for each priority level.
5.3.3
Fast Interrupt Handling
Fast interrupts are described in the DSP56800E Reference Manual. The interrupt controller recognizes
Fast Interrupts before the core does.
A Fast Interrupt is defined (to the ITCN) by:
1. Setting the priority of the interrupt as level 2, with the appropriate field in the IPR registers
2. Setting the FIMn register to the appropriate vector number
3. Setting the FIVALn and FIVAHn registers with the address of the code for the
Fast Interrupt
When an interrupt occurs, its vector number is compared with the FIM0 and FIM1 register values. If a
match occurs, and it is a level 2 interrupt, the ITCN handles it as a Fast Interrupt. The ITCN takes the vector
address from the appropriate FIVALn and FIVAHn registers, instead of generating an address that is an
offset from the VBA.
The core then fetches the instruction from the indicated vector adddress and if it is not a JSR, the core starts
its Fast Interrupt handling.
Table 5-1 Interrupt Mask Bit Definition
SR[9]
SR[8]
Exceptions Permitted
Exceptions Masked
0
Priorities 0, 1, 2, 3
None
0
1
Priorities 1, 2, 3
Priority 0
1
0
Priorities 2, 3
Priorities 0, 1
1
Priority 3
Priorities 0, 1, 2
相關(guān)PDF資料
PDF描述
MC56F8014VFAE 0-BIT, 8 MHz, OTHER DSP, PQFP32
MC56F8037VLH 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
MC56F8145VFG 4-BIT, 120 MHz, OTHER DSP, PQFP128
MC56F8146VFVE 16-BIT, 120 MHz, OTHER DSP, PQFP144
MC56F8146VFV 16-BIT, 120 MHz, OTHER DSP, PQFP144
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC56F8014VFAE 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 16 BIT DSPHC BAHAMAS RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
MC56F8023 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8023VLC 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 16 BIT DSPHC RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
MC56F8025 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8025E 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Digital Signal Controller Product Brief
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