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參數資料
| 型號： | S568013MFA00E |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 數字信號處理 |
| 英文描述： | 0-BIT, 8 MHz, OTHER DSP, PQFP32 |
| 封裝： | ROHS COMPLIANT, LQFP-32 |
| 文件頁數： | 66/125頁 |
| 文件大?。?/td> | 1702K |
| 代理商： | S568013MFA00E |
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Introduction
56F8013/56F8011 Data Sheet, Rev. 11
Freescale Semiconductor
45
Part 5 Interrupt Controller (ITCN)
5.1 Introduction
The Interrupt Controller (ITCN) module is used to arbitrate between various interrupt requests (IRQs), to
signal to the 56800E core when an interrupt of sufficient priority exists, and to what address to jump in
order to service this interrupt.
5.2 Features
The ITCN module design includes these distinctive features:
Programmable priority levels for each IRQ
Two programmable Fast Interrupts
Notification to SIM module to restart clocks out of Wait and Stop modes
Ability to drive initial address on the address bus after reset
For further information, see Table 4-2, Interrupt Vector Table Contents.
5.3 Functional Description
The Interrupt Controller contains registers that allow each of the 46 interrupt sources to be set to one of
four priority levels (excluding certain interrupts that are of fixed priority). All of the interrupt requests of
a given level are priority encoded to determine the lowest numerical value of the active interrupt requests
for that level. Within a given priority level, number 0 is the highest priority and number 45 is the lowest.
During Wait and Stop modes, the system clocks and the 56800E core are turned off. The ITCN can wake
up the core and restart system clocks by signaling a pending IRQ to the System Integration Module (SIM)
to restart the clocks and service the IRQ. An IRQ can only wake up the core if the IRQ is enabled prior to
entering the Wait or Stop mode.
$17
Reserved
FM_DATA
$18
Data Buffer Register
$19
Reserved
$1A
Reserved
FM_OPT1
$1B
Optional Data 1 Register
Reserved
FM_TSTSIG
$1D
Test Array Signature Register
Table 4-24 Flash Module Registers Address Map (Continued)
(FM_BASE = $00 F400)
Register Acronym
Address Offset
Register Description
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