LPC2470 datasheet(28/72 Pages) PHILIPS

Part #	LPC2470

Description	Flashless 16-bit/32-bit micro; Ethernet, CAN, LCD, USB 2.0 device/host/OTG, external memory interface

PDF	72 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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28 / 72 page

LPC2470_0

Preliminary data sheet

Rev. 00.01 — 5 October 2007

28 of 72

NXP Semiconductors

LPC2470

Fast communication chip

7.4 Interrupt controller

The ARM processor core has two interrupt inputs called Interrupt Request (IRQ) and Fast

Interrupt Request (FIQ). The VIC takes 32 interrupt request inputs which can be

programmed as FIQ or vectored IRQ types. The programmable assignment scheme

means that priorities of interrupts from the various peripherals can be dynamically

assigned and adjusted.

FIQs have the highest priority. If more than one request is assigned to FIQ, the VIC ORs

the requests to produce the FIQ signal to the ARM processor. The fastest possible FIQ

latency is achieved when only one request is classified as FIQ, because then the FIQ

Fig 4.

LPC2470 memory map

0.0 GB

1.0 GB

0x0000 0000

RESERVED ADDRESS SPACE

SPECIAL REGISTERS

ON-CHIP STATIC RAM

RESERVED ADDRESS SPACE

0x4000 0000

0x3FFF 8000

0x3FFF FFFF

2.0 GB

0x8000 0000

0x7FFF FFFF

BOOT ROM

3.75 GB

4.0 GB

3.5 GB

AHB PERIPHERALS

APB PERIPHERALS

0xE000 0000

0xF000 0000

0xFFFF FFFF

002aad316

LPC2470 Datasheet(PDF) 28 Page - NXP Semiconductors

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