AS3525-A/-B C22O22
Data Sheet, Confidential
å
Datasheet, Confidential
AS3525
Advanced Audio Processor System
1
Description
2
2.1
Key Features
Digital Core
This highly flexible and fully integrated audio processor system
(AS3525) combines strong calculating power, high performance
audio features with system power management options for battery
powered devices.
Using advanced 0.13µm process technology and large on chip
RAM leads to outstanding low power consumption of as low as
58mW for a complete flash-player during MP3 playback.
Based on a powerful ARM9TDMI capable of performing up to
200MIPS it is suited to run MP3, AAC, WMA, OGG… decoders and
encoders and, in addition, it can perform extensive user interfaces,
motion graphics support, video playback and much more.
The AS3525 SOC (system-on-a-Chip) features dedicated high
speed interfaces for ATA IDE, USB2.0 HS-OTG and SDRAM
ensuring maximum performance for download, upload, and
playback.
Furthermore interfaces for NAND flashes, MMC/SD cards and
Memory Stick ensure most flexible system design possibilities.
Hardware support for parallel interfaces lower the CPU load serving
complex and/or colour user interfaces.
Additional serial high-speed data and control interfaces guarantee
the connection to other peripherals and or processors in the system.
Two independently programmable PLLs generate the required
frequencies for audio playback/recording, for the processor core
and for the USB interface at the same time. An additional external
clock input eliminates the use of external crystals when used in
multi-processor systems like mobile phones.
It has a variety of audio inputs and outputs to directly connect
electret microphones, and auxiliary signal sources via a 10-channel
mixer to a 16Ω/32Ω headset , 4Ω speaker or auxiliary audio
peripherals.
Further the device offers advanced power management functions.
All necessary ICs and peripherals in a Digital Audio Player with
flash or hard-disk memory are supplied by the AS3525. The
different regulated supply voltages are fully programmable. The
power management block generates 10 different supply voltages
out of a single battery supply. CPU, NAND flash, SRAM, memory
cards, LCD, LCD backlight and USB-OTG can be powered. When
operating from a single cell (AA or AAA) battery the AS3525 can
use a DCDC booster to generate the needed system supply.
The AS3525 has an independent 32kHz real time clock (RTC) on
chip, which allows a complete power down of the system CPU and
peripherals.
AS3525 also contains a charger for Li-Io battery supply
The single supply voltage may vary from 1.0V to 5.5V.
Embedded 32-Bit RISC Controller
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ARM922TDMI RISC CPU
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2.5Mbit on-chip RAM
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1Mbit on chip ROM
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Clock speed max. 250MHz (200MIPS)
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Standard JTAG interface
USB 2.0 HS & OTG Interface
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Up to 480Mbit/s transfer speed
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USB 2.0 HS/FS physical inlcuding OTG support
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USB 2.0 HS/FS digital core including OTG host
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Dedicated dual port buffer RAM
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DMA bus master functionality
IDE Host Controller
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Supporting Ultra ATA 33/66/100/133 modes
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Programmable IO and Multi-word DMA capability
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Dedicated dual port buffer RAM
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DMA bus master functionality
External Memory Controller
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Dynamic memory interface
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Asynchronous static memory
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DMA bus master functionality
DMA Controller
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Single Master DMA controller
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2 DMA channels possible at the same time
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16 DMA requests supported
Interrupt Controller
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Support for 32 standard interrupts
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Support for 16 vectored IRQ interrupts
Audio Subsystem Interface
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Dedicated 2 wire serial control master
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I2S input and output with dual port buffer RAM
Nand Flash Interface
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8 and 16bit flash support
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3, 4 & 5 byte address support
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hardware ECC
MMC/SD Interface
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MMC/SD Card host for multiple card support
4 data line support for SD cards
© 2005-2009, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved.
www.austriamicrosystems.com
Revision 1.13
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