austriamicrosystems AS3514 V12 Product Brief Product Brief AS3514 Stereo Audio Codec with System Power Management 1 General Description The AS3514 is a low power stereo audio codec and is designed for Portable Digital Audio Applications. It allows playback in CD quality and recording in FM-stereo quality. It has a variety of audio inputs and outputs to directly connect electret microphones, 16Ω headset, 4Ω speaker and auxiliary signal sources via a 10-channel mixer. It only consumes 22mW in playback mode. Further the device offers advanced power management functions. All necessary ICs and peripherals in a flash based Digital Audio Player are supplied by the AS3514. The power management block generates 9 different supply voltages out of the battery supply. CPU, NAND flash, SRAM, memory cards, LCD back-light, USB RX/TX can be powered. The different supply voltages are programmable via the serial control interface. It also contains a charger and is designed for battery supplies from 1V to 5V. The AS3514 has an on-chip, phase locked loop (PLL) controlled, clock generator. It generates 44.1kHz, 48kHz and other sample rates defined in MP3, AAC, WMA, OGG VORBIS etc. No additional external crystal or PLL is needed. Further the AS3514 has an independent 32kHz real time clock (RTC) on chip which allows a complete power down of the system CPU. 2 Key Features Multi-bit Sigma Delta Converters – DAC: 18bit with 94dB SNR (‘A’ weighted) , 48kHz – ADC: 14bit with 82dB SNR (‘A’ weighted), 16kHz 2 Microphone Inputs – 3 gain pre-setting (28dB/34dB/40dB) with AGC – 32 gain steps @1.5dB and MUTE – supply for electret microphone – microphone detection – remote control by switch 2 Line Inputs – volume control via serial interface – 32 steps @1.5dB and MUTE – stereo or 2x mono or mono differential Line Outputs – volume control via serial interface – 32 steps @1.5dB and MUTE – 1Vp @10kΩ Audio Mixer – 10 channel input/output mixer with AGC – mixes line inputs and microphones with DAC – left and right channels independent www.austriamicrosystems.com High Efficiency Headphone Amplifier – volume control via serial interface – 32 steps @1.5dB and MUTE – 2x40mW @16Ω driver capability – headphone and over-current detection – phantom ground eliminates large capacitors High Power Speaker Amplifier – volume control via serial interface – 32 steps @1.5dB and MUTE – 2x500mW @8Ω driver capability – over-current detection Power Management – step up for system supply (3.0V – 3.6V) – step down for CPU core (0.85V – 1.8V, 250mA) – step up for backlight (15V, 38.5mA) – LDO for digital supply (2.9V, 200mA) – LDO for analogue supply (2.9V, 200mA) – LDO for peripherals (1.7V-3.3V, 200mA) – LDO for peripherals (3.1V-3.3V, 200mA) – LDO for RTC (1.0V-2.5V, 2mA) – LDO for USB 1.1 transceiver (3.26V, 10mA) – battery supervision – 10sec emergency shut-down Battery Charger – automatic trickle charge (50mA) – prog. constant current charging (100-400mA) – prog. constant voltage charging (3.9V-4.25V) Real Time Clock – ultra low power 32kHz oscillator – 32bit RTC sec counter – selectable alarm (seconds or minutes) General Purpose ADC – 10bit resolution – 16 inputs analogue multiplexer Interfaces – I²S digital audio interface – 2 wire serial control interface – watchdog via serial interface – power good pin – 128bit unique ID (OTP) – 17 different interrupts Package CTBGA64 [7.0x7.0x1.1mm] 0.8mm pitch 3 Application Portable Digital Audio Player and Recorder PDA, Smartphone Revision 1.01 1-3 www.austriamicrosystems.com Revision 1.01 Line_In1 MIC1SUP 1.5V vs. HGND + dedection 10-Bit, self clocked ADC to I2C MIC Supply MIC1 Off/28/34/40dB AGC 29dB/Off MIC1P MIC1N 2*32 steps 1.5db Mute/-34.5..12db 15V BACK Light Step Up MUX IRQ MIC2SUP MIC2 Off/28/34/40dB AGC 29dB/Off MIC2P stereo / mono diff. MIC2N LIN1R Line_In2 LRCK stereo / mono diff. P_PVDD LIN1L MCLK LIN2L AGND 14-Bit / 16ks Stereo Gain ZAPEN LIN2R VREF Stereo ADC ZAPOE LRCK PROG I2S CSCL Charger 2*32 steps 1.5db Mute/-34.5..12db Stereo Gain 2*32 steps 1.5db Mute/-34.5..12db Stereo Gain 2*32 steps 1.5db Mute/-34.5..12db Stereo Gain 2*32 steps 1.5db Mute/-34.5..12db Stereo Gain 2*32 steps 1.5db Mute/-34.5..12db Stereo Gain 50mA trickle charging 100 - 400mA const. current charging 3.9 - 4.25V const. voltage charging 18 bit Stereo DAC CSDA SCLK DVSS UVDD 3.26V fix LDO6 Σ CPVDD 3.1 or 3.3V LDO4 DCDC buck 0..-46.5dB 2*32steps + mute Line_Out AGC CVDD prog. via P_CVDD analog input (0.85- 1.8V) VDDC1 SDO DVDD RVDD prog. via PCP (1- 2.5V) XOUT 32kHz Osc + 32Bit second counter (I2C register) XIN I2C VSSC1 SDI 128Bit Fuse Array RVDD References CPVDD WDOG POR PLL LX_C1 LDO5 CVDD RTC 2x40mW@16Ω mute / 32*1.5dB Gain ShortDet 200mA HPH_AMP 2*500mW @4Ω 1W@8Ω mono diff. mute / 32*1.5dB Gain ShortDet 700mA SP_AMP AVDD 2.9V fix LDO1 DVDD 2.9V fix LDO2 prog. via P_PVDD 3.3 to 1.7, OFF LDO3 (PVDD) 3.0, 3.1, 3.2 or 3.6V DCDC boost HPGND BVSS2 HPG_CM BVDD HPH_R BVSS2 HPH_L BGND BVDD LSP_R BVSS LSP_L BVDD AVDD QLDO2 PVDD SW3 VSS3 VB1V Figure 1 PWR_UP PWGOOD AS3514 V12 Product Brief austriamicrosystems 4 Block Diagram AS3514 Block Diagram LOUT_L LOUT_R VTRM UVDD CHG_OUT CHG_IN BATTEMP ISINK VSS15 SW15 P_CVDD 2-3 austriamicrosystems AS3514 V12 Product Brief 5 Copyright Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks of their respective companies. 6 Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent identification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. 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No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. 7 Contact Information Headquarters: austriamicrosystems AG Business Unit Communications A 8141 Schloss Premstätten, Austria T. +43 (0) 3136 500 0 F. +43 (0) 3136 5692 [email protected] For Sales Offices, Distributors and Representatives, please visit: www.austriamicrosystems.com austriamicrosystems www.austriamicrosystems.com – a leap ahead Revision 1.01 3-3