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
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