AS3525 datasheet(25/194 Pages) AMSCO

25 / 194 page

AS3525-A/-B C22O22

Data Sheet, Confidential

www.austriamicrosystems.com

Revision 1.13

- 194

7.2.2 On-Chip ROM

7.2.2.1

ROM Controller

The ROM controller implements the AHB slave interface for accessing the ROM.

The ROM controller generates OK response for all reads and error response for all writes.

Access width is always 32 bits.

7.2.2.2

1MBIT ROM

128 KByte of on-chip mask-programmable ROM are included.

The ROM is metal mask programmable by a single mask change (VIA2).

The ROM contains the following firmware package

•

Boot loader

7.2.3 VIC – Vectored Interrupt Controller

The ARM PrimeCell™ PL190 “vectored interrupt controller” is included in the AHB system.

7.2.3.1

Features

•

AMBA specification Rev 2.0 compliant

•

support for 32 standard interrupts

•

support for 16 vectored interrupts

•

hardware interrupt priority

•

IRQ and FIQ generation

•

AHB mapped for fast interrupt response

•

software interrupt generation

•

test registers

•

raw interrupt status

•

interrupt request status

•

interrupt masking

•

privileged mode supportBlock Diagram

Figure 8 VIC Block Diagram

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