AS3525-A/-B C22O22
Data Sheet, Confidential
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
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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
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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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