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AS3525 Datasheet(PDF) 2 Page - ams AG |
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AS3525 Datasheet(HTML) 2 Page - ams AG |
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2 / 194 page  AS3525-A/-B C22O22 Data Sheet, Confidential © 2005-2009, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved. www.austriamicrosystems.com Revision 1.13 2 - 194 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 2.2 Audio Multi-bit Sigma Delta Converters • DAC: 18bit with 94dB SNR (‘A’ weighted) • ADC: 14bit with 82dB SNR (‘A’ weighted) • Sampling Frequency: 8-48kHz • 32 gain steps @ 1.5dB and MUTE 2 Line Inputs • stereo, 2x mono or mono differential inputs • 32 gain steps @ 1.5dB and MUTE 2 Microphone Inputs • differential inputs • 3 gain pre-sets (28/34/40 dB) and OFF with AGC • 32 gain steps @ 1.5dB and MUTE • microphone detection with about 50uA • supply for electret microphone max 1mA • remote control by switch Line Output • max 1Vp @ 10k Ω in single ended stereo mode • >32 Ω in mono differential mode to drive ear-pieces • 32 gain steps @ 1.5dB and MUTE Stereo Headphone Audio Amplifier • 2x 60mW @ 16 Ω driver capacity • 32 gain steps @ 1.5dB and MUTE • Click- and pop-less start-up and power down • Headphone and over-current detection • Phantom ground eliminates large capacitors Stereo Speaker Audio Amplifier • 2x 500mW @ 4 Ω driver capacity • 32 gain steps @ 1.5dB and MUTE • Click- and pop-less start-up and power down • Over-current detection 10 Channel Audio Mixer • mixes Line inputs, Mic inputs and DAC output • separate selectable source for right and left channel • possibility to select AGC to prevent clipping 2.3 Power Management Voltage Generation • step up for system supply (3.0V-3.6V, 150mA) • charge-pump for CPUcore (1.05V-1.2V, 50mA) • charge pump for USB OTG (5V, 10mA) • LDO for digital supply (2.9V, 200mA) • LDO for analog supply (2.9V, 200mA) • LDO for IO supply (2.94 or 3.11V, 200mA) • LDO for peripherals (1.7V-3.3V, 200mA) • LDO for USB Transceiver (3.26V, 200mA) • LDO for RTC (1.0V-2.5V, 2mA) 15V Back-light step up converter • for driving up to 6 white LEDs in series to achieve a uniform illumination • current programmable up to 40mA (1.25mA steps) Li-Io Battery Charger • automatic 50mA trickle charging • prog. constant current charging (50 – 400mA) • prog. constant voltage charging (3.9 - 4.25V) 2.4 System RTC • ultra low power 32kHz oscillator • 32bit RTC second counter • selectable alarm (seconds or minutes) • trim able oscillator Oscillator • low power 12-24MHz Oscillator • generating main system clock Supervisor • automatic battery monitoring with interrupt generation and selectable warning level • automatic temperature supervision with interrupt generation and selectable warning and shutdown levels General Purpose ADC • 10bit resolution • 16 inputs analog multiplexer UID • Unique Identification Number in OTP ROM for DRM support General • Reset pin, watchdog • 10sec emergency shut-down • Wide battery supply range 1V – 5.5V • MP3 playback with 58mW Packages: • AS3525-A: CTBGA224 13x13mm, 0.8mm pitch • AS3525-B: CTBGA144 10x10mm, 0.8mm pitch 3 Application • Portable Digital Audio Player and Recorder • Portable Digital Media Player • PDA • Smartphone |
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