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ADSP-BF522C Datasheet(PDF) 3 Page - Analog Devices |
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ADSP-BF522C Datasheet(HTML) 3 Page - Analog Devices |
3 / 12 page ADSP-BF522C/ADSP-BF525C/ADSP-BF527C Preliminary Technical Data Rev. PrB | Page 3 of 12 | June 2007 GENERAL DESCRIPTION This document describes the differences between the ADSP- BF522C/ADSP-BF525C/ADSP-BF527C and the ADSP- BF522/ADSP-BF525/ADSP-BF527 standard product. Please refer to the published ADSP-BF522/ADSP-BF525/ADSP-BF527 Revision PrC datasheet for general description and specifica- tions. This document only describes the exceptions to that datasheet. The ADSP-BF522C/ADSP-BF525C/ADSP-BF527C adds a ste- reo CODEC to the standard product and changes the package labeling. STEREO CODEC The CODEC in the ADSP-BF522C/ADSP-BF525C/ADSP- BF527C is a low power, high quality stereo audio CODEC for portable digital audio application. It features two 24-bit A/D converter channels and two 24-bit D/A converter channels. In normal mode, the XMI/MCLK oscillator is set up according to the desired sample rates of the ADC and DAC. For ADC or DAC sampling rates of 8 kHz, 32 kHz, 48 kHz or 96 kHz, MCLK frequencies of either 12.288 MHz (256 × FS) or 18.432 MHz (384 × FS) can be used. For ADC or DAC sampling rates of 8 kHz, 44.1 kHz or 88.2 kHz, MCLK frequencies of either 11.2896 MHz (256 × FS) or 16.9344 MHz (384 × FS) can be used. In USB mode, the XTI/MCLK frequency is only 12MHz allow- ing for ADC and DAC sampling rates of 8 kHz, 44.1 kHz or 88.2 kHz. The CODEC can operate with power supplies as low as 1.8 V for the analog part and 1.8 V for digital port. The maximum voltage is 3.6 V for all power supplies. The device is controlled by a 2- or 3-wire serial interface which provides access to all features including volume controls, mutes and extensive power management facilities. Figure 2. Audio CODEC Block Diagram MUX ADC DAC MUX ADC DAC RLINEIN MICBIAS MICIN LLINEIN ATTENUATOR ATTENUATOR ATTENUATOR ATTENUATOR + + DIGITAL FILTERS RHPOUT ROUT LOUT LHPOUT CLK DIGITAL AUDIO INTERFACE CONTROL INTERFACE XTI/MCLK XTO CCLKOUT DACDAT ADCDAT BCLK DACLRC ADCLRC CMODE CSB CSDA CSCL |
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