Description

The AS3524 implements a highly flexible and fully integrated digital audio processor system combining strong calculating power and high performance interfaces commonly used within audio player systems.

Key Features

Digital Core

Embedded 32-Bit RISC Controller

• ARM922TDMI RISC CPU

• 2.5Mbit on-chip RAM

• 1Mbit on chip ROM

• Clock speed max. 250MHz (200MIPS)

• Standard JTAG interface

USB 2.0 HS & OTG Interface

• Up to 480Mbit/s transfer speed

• USB 2.0 HS/FS physical inlcuding OTG support

• USB 2.0 HS/FS digital core including OTG host

• Dedicated dual port buffer RAM

• DMA bus master functionality

IDE Host Controller

• Supporting Ultra ATA 33/66/100/133 modes

• Programmable IO and Multi-word DMA capability

• Dedicated dual port buffer RAM

• DMA bus master functionality

External Memory Controller

• Dynamic memory interface

• Asynchronous static memory

• DMA bus master functionality

DMA Controller

• Single Master DMA controller

• 2 DMA channels possible at the same time

• 16 DMA requests supported

Interrupt Controller

• Support for 32 standard interrupts

• Support for 16 vectored IRQ interrupts

Audio Subsystem Interface

• Dedicated 2 wire serial control master

• I2S input and output with dual port buffer RAM

Nand Flash Interface

• 8 and 16bit flash support

• 3, 4 & 5 byte address support

• hardware ECC

MMC/SD Interface

• MMC/SD Card host for multiple card support

• 4 data line support for SD cards

MS / MS Pro Interface

• Dedicated dual port buffer RAM

Display Interface

• Serial and parallel controller supported

• On chip hardware acceleration

Synchronous Serial Interface

• Master and slave operation

• 8 and 16 bit support

• Several protocol standards supported

I2S Interface

• Input multiplexed with audio subsystem

• selectable SPDIF input conversion

• Dedicated dual port buffer RAM

2 Wire Serial Control Interface

• Master and slave operation

• Standard and fast mode support

General Purpose IO Interface

• 4x 8-bit ports

Multiple Boot Options

• Selection of internal ROM or external boot device

• Internal boot loader supporting boot from external NorFlash, NandFlash, IDE, SPI host

• Internal USB boot loader with USB promer supporting initial factory programming and firmware update

Application

• Portable Digital Audio Player and Recorder

• Portable Digital Media Player

• PDA

• Smartphone