參數(shù)資料
型號: ADSP-BF524KBCZ-4C2
廠商: Analog Devices Inc
文件頁數(shù): 23/36頁
文件大?。?/td> 0K
描述: IC DSP CTRLR 400MHZ 289CSPBGA
標準包裝: 1
系列: Blackfin®
類型: 定點
接口: DMA,I²C,PPI,SPI,SPORT,UART,USB
時鐘速率: 400MHz
非易失內(nèi)存: ROM(32 kB)
芯片上RAM: 132kB
電壓 - 輸入/輸出: 1.8V,2.5V,3.3V
電壓 - 核心: 1.30V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 289-LFBGA,CSPBGA
供應(yīng)商設(shè)備封裝: 289-CSPBGA(12x12)
包裝: 托盤
ADSP-BF522C/ADSP-BF523C/ADSP-BF524C/ADSP-BF525C/ADSP-BF526C/ADSP-BF527C
Rev. A
|
Page 3 of 36
|
March 2010
GENERAL DESCRIPTION
This document describes the differences between the
ADSP-BF52xC and the ADSP-BF52x standard Blackfin
prod-
uct. Please refer to the published ADSP-BF52x data sheet for
general description and specifications. This document only
describes the differences from that data sheet.
The ADSP-BF52xC processors add a low power, high quality
stereo audio codec for portable digital audio applications with
one set of stereo programmable gain amplifier (PGA) line
inputs and one monaural microphone input. It features two 24-
bit analog-to-digital converter (ADC) channels and two 24-bit
digital-to-analog (DAC) converter channels.
The codec can operate as a master or a slave. It supports various
master clock frequencies, including 12 MHz or 24 MHz for USB
devices; standard 256 × fS or 384 × fS based rates, such as
12.288 MHz and 24.576 MHz; and many common audio sam-
pling rates, such as 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz, 32 kHz,
24 kHz, 22.05 kHz, 16 kHz, 12 kHz, 11.025 kHz, and 8 kHz.
The codec can operate at power supplies as low as 1.8 V for the
analog circuitry and as low as 1.8 V for the digital circuitry. The
maximum voltage supply is 3.6 V for all supplies.
The codec software-programmable stereo output options
provide the programmer with many application possibilities
because the device can be used as a headphone driver or as a
speaker driver. Its volume control functions provide a large
range of gain control of the audio signal.
CODEC DESCRIPTION
The ADSP-BF52xC codec contains a central clock source, called
the codec master clock (CODEC_MCLK) that produces a refer-
ence clock for all internal audio data processing and synch-
ronization. When using an external clock source to drive the
CODEC_MCLK pin, care should be taken to select a clock
source with less than 50 ps of jitter. Without careful generation
of the CODEC_MCLK signal, the digital audio quality
will suffer.
To enable the codec to generate the central reference clock
in a system, connect a crystal oscillator between the XTI/
CODEC_MCLK input pin and the XTO output pin.
Figure 1. Codec Block Diagram
CODEC
AVDD
VMID
AGND
MICBIAS
CSB
CSDA
CSCL CMODE
CONTROL INTERFACE
RLINEIN
MICIN
LLINEIN
OSCPD
OSC
CLKIN
DIVIDER
CLKOUT
DIVIDER
DIGITAL AUDIO INTERFACE
VOLUME
MIC
BOOST
MUTE
MUX
ADC
DIGITAL
FILTERS
HPVDD
HPGND
RHPOUT
ROUT
LOUT
LHPOUT
HEADPHONE
DRIVER
HEADPHONE
DRIVER
VOLUME/
MUTE
VOLUME/
MUTE
ATTEN/
MUTE
ATTEN/
MUTE
DAC
MUTE
Σ
XTO
XTI/CODEC_MCLK
CODEC_CLK
OUT
DAC
DA
T
D
A
CLRC
CODEC_BCLK
ADCLRC
ADCD
A
T
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