參數(shù)資料
型號： 935261615118
廠商： NXP SEMICONDUCTORS
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO28
封裝： 7.50 MM, PLASTIC, SO-28
文件頁數(shù)： 40/48頁
文件大小： 356K
代理商： 935261615118
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UDA1321
Information as of 2000-08-16
UDA1321; Universal Serial Bus (USB) Digital-to-Analog Converter (DAC)
The UDA1321 is a stereo CMOS digital-to-analog bitstream converter designed for USB-compliant audio playback devices and multimedia
audio applications.The UDA1321 is an adaptive asynchronous sink USB audio device with a continuous sampling frequency (fs ) range
from 5 to 55 kHz. It contains a USB interface, an embedded microcontroller and an Asynchronous Digital-to-Analog Converter (ADAC).
The USB interface is the interface between the USB, the ADAC and the microcontroller. The USB interface consists of an analog front-end
and a USB processor. The analog front-end transforms the differential USB data to a digital data stream. The USB processor buffers the
input and output data from the analog front-end and handles all low-level USB protocols. The USB processor selects the relevant data from
the universal serial busperforms an extensive error detection and separates control information (input and output) and audio information
(input only).
The control information becomes accessible at the microcontroller. The audio information becomes available at the digital I/O output or is
fed directly to the ADAC.
The microcontroller handles the high-level USB protocols translates the incoming control requests and manages the user interface via
General Purpose (GP) pins and an I2C-bus.
The ADAC enables the wide and continuous range of input sampling frequencies. By means of a Sample Frequency Generator (SFG)the
ADAC is able to reconstruct the average sample frequency from the incoming audio samples. The ADAC also performs the sound
processing.
The ADAC consists of FIFO registersa unique audio feature processing DSPthe SFGdigital up-sampling filtersa variable hold registera
Noise Shaper (NS) and a Filter Stream DAC (FSDAC) with integrated filter and line output drivers. The audio information is applied to the
ADAC via the USB processor or via the digital I/O input.
An external DSP can be used for adding extra sound processing features via the digital I/O-bus.
The UDA1321 supports the standard I2S-bus data input format and the LSB-justified serial data input format with word lengths of 1618 and
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Description
相關PDF資料
PDF描述
935261616112 SPECIALTY CONSUMER CIRCUIT, PDIP32
935261617118 SERIAL INPUT LOADING, 24-BIT DAC, PDSO32
935261617112 SERIAL INPUT LOADING, 24-BIT DAC, PDSO32
935261695118 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
935256880112 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDIP8
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