ADSP-BF525C AD [Analog Devices], ADSP-BF525C Datasheet - Page 3

• Manufacturer Part Number: ADSP-BF525C
• Description: Embedded Processor
• Manufacturer: AD [Analog Devices]

Preliminary Technical Data
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.
XTI/MCLK XTO CCLKOUT DACDAT ADCDAT BCLK
MICBIAS
RLINEIN
MICIN
LLINEIN
CLK
MUX
MUX
DIGITAL AUDIO INTERFACE
Rev. PrB | Page 3 of 12 | June 2007
Figure 2. Audio CODEC Block Diagram
ADC
ADC
DIGITAL
FILTERS
ATTENUATOR
ATTENUATOR
ATTENUATOR
ATTENUATOR
ADSP-BF522C/ADSP-BF525C/ADSP-BF527C
ADCLRC
DACLRC
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.
DAC
DAC
CMODE CSB CSDA CSCL
CONTROL INTERFACE
+
+
RHPOUT
ROUT
LOUT
LHPOUT