lpc2917 NXP Semiconductors, lpc2917 Datasheet - Page 50

• Manufacturer Part Number: lpc2917
• Description: Arm9 Microcontroller With Can And Lin
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2917_19_1
Preliminary data sheet
8.8.6.3 PMU pin description
8.9.1 Overview
8.9.2 Description
8.9 Vectored interrupt controller
Table 27.
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
The PMU has no external pins.
The LPC2917/19 contains a very flexible and powerful Vectored Interrupt Controller (VIC)
to interrupt the ARM processor on request.
The key features are:
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:
Branch Clock Name
CLK_SPI0
CLK_SPI1
CLK_SPI2
CLK_TMR0
CLK_TMR1
CLK_TMR2
CLK_TMR3
CLK_ADC1
CLK_ADC2
CLK_TESTSHELL_IP
•
•
•
•
•
•
•
•
•
•
Level-active interrupt request with programmable polarity
56 interrupt-request inputs
Software-interrupt request capability associated with each request input
Observability of interrupt-request state 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
Target 0 is ARM processor FIQ (fast interrupt service)
Target 1 is ARM processor IRQ (standard interrupt service)
Branch clock overview
Rev. 1.01 — 15 November 2007
Base Clock
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_CLK_TESTSHELL
…continued
ARM9 microcontroller with CAN and LIN
Implemented Switch On/Off
Mechanism
WAKEUP
+
+
+
+
+
+
+
+
+
0
LPC2917/19
AUTO
+
+
+
+
+
+
+
+
+
0
© NXP B.V. 2007. All rights reserved.
RUN
+
+
+
+
+
+
+
+
+
1
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