參數(shù)資料
型號: LPC2925FBD100
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: ARM9 microcontroller with CAN, LIN, and USB
中文描述: 32-BIT, FLASH, 125 MHz, RISC MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT407-1, LQFP-100
文件頁數(shù): 51/84頁
文件大小: 551K
代理商: LPC2925FBD100
LPC2921_23_25_3
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 03 — 14 April 2010
51 of 84
NXP Semiconductors
LPC2921/2923/2925
ARM9 microcontroller with CAN, LIN, and USB
6.16 Vectored interrupt controller
The LPC2921/2923/2925 contains a very flexible and powerful Vectored Interrupt
Controller (VIC) to interrupt the ARM processor on request.
The key features are:
Level-active interrupt request with programmable polarity.
56 interrupt-request inputs.
Software-interrupt request capability associated with each request input.
Interrupt request state can be observed before masking.
Software-programmable priority assignments to interrupt requests up to 15 levels.
Software-programmable routing of interrupt requests towards the ARM-processor
inputs IRQ and FIQ.
Fast identification of interrupt requests through vector.
Support for nesting of interrupt service routines.
6.16.1
Functional description
The Vectored Interrupt Controller routes incoming interrupt requests to the ARM
processor. The interrupt target is configured for each interrupt request input of the VIC.
The targets are defined as follows:
Target 0 is ARM processor FIQ (fast interrupt service).
Target 1 is ARM processor IRQ (standard interrupt service).
CLK_UART0
CLK_UART1
CLK_SPI0
CLK_SPI1
CLK_SPI2
CLK_TMR0
CLK_TMR1
CLK_TMR2
CLK_TMR3
CLK_ADC1
CLK_ADC2
CLK_USB
BASE_UART_CLK
BASE_UART_CLK
BASE_SPI_CLK
BASE_SPI_CLK
BASE_SPI_CLK
BASE_TMR_CLK
BASE_TMR_CLK
BASE_TMR_CLK
BASE_TMR_CLK
BASE_ADC_CLK
BASE_ADC_CLK
BASE_USB_CLK
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Table 29.
Legend:
‘1’ Indicates that the related register bit is tied off to logic HIGH, all writes are ignored
‘0’ Indicates that the related register bit is tied off to logic LOW, all writes are ignored
‘+’ Indicates that the related register bit is readable and writable
Branch clock name
Base clock
Branch clock overview
…continued
Implemented switch on/off
mechanism
WAKE-UP
AUTO
RUN
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