- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄24817 > 935265527518 (NXP SEMICONDUCTORS) SPECIALTY MICROPROCESSOR CIRCUIT, PQFP64 PDF資料下載
參數(shù)資料
| 型號： | 935265527518 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP64 |
| 封裝： | PLASTIC, QFP-64 |
| 文件頁數(shù)： | 23/55頁 |
| 文件大小： | 387K |
| 代理商： | 935265527518 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁當前第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁
1999 May 10
3
Philips Semiconductors
Preliminary specication
Universal Serial Bus (USB) CODEC
UDA1325
APPLICATIONS
USB monitors
USB speakers
USB microphones
USB headsets
USB telephone/answering machines
USB links in consumer audio devices.
GENERAL DESCRIPTION
The UDA1325 is a single chip stereo USB codec
incorporating bitstream converters designed for
implementation in USB-compliant audio peripherals and
multimedia audio applications. It contains a USB interface,
an embedded microcontroller, an Analog-to-Digital
Interface (ADIF) and an Asynchronous Digital-to-Analog
Converter (ADAC).
The USB interface consists of an analog front-end and a
USB processor. The analog front-end transforms the
differential USB data into a digital data stream. The USB
processor buffers the incoming and outgoing data from the
analog front-end and handles all low-level USB protocols.
The USB processor selects the relevant data from the
universal serial bus, performs an extensive error detection
and separates control information and audio information.
The control information is made accessible to the
microcontroller. At playback, the audio information
becomes available at the digital I2S output of the digital I/O
module or is fed directly to the ADAC. At recording, the
audio information is delivered by the ADIF or by the digital
2S input of the I2S-bus interface.
All I2S inputs and I2S outputs support standard I2S-bus
format and the LSB justified serial data format with word
lengths of 16, 18 and 20 bits.
Via the digital I/O module with its I2S input and output, an
external DSP can be used for adding extra sound
processing features for the audio playback channel.
The microcontroller is responsible for handling the
high-level USB protocols, translating the incoming control
requests and managing the user interface via general
purpose pins and an I2C-bus.
The ADAC enables the wide and continuous range of
playback 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
playback sound processing. The ADAC consists of a
FIFO, an unique audio feature processing DSP, the SFG,
digital filters, a variable hold register, a Noise Shaper (NS)
and a Filter Stream DAC (FSDAC) with line output drivers.
The audio information is applied to the ADAC via the USB
processor or via the digital I2S input of the digital I/O
module.
The ADIF consists of an Programmable Gain Amplifier
(PGA), an Analog-to-Digital Converter (ADC) and a
Decimator Filter (DF). An Analog Phase Lock Loop (APLL)
or oscillator is used for creating the clock signal of the
ADIF. The clock frequency for the ADIF can be controlled
via the microcontroller. Several clock frequencies are
possible for sampling the analog input signal at different
sampling rates.
The wide dynamic range of the bitstream conversion
technique used in the UDA1325 for both the playback and
recording channel guarantees a high audio sound quality.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
UDA1325PS
SDIP42
plastic shrink dual in-line package; 42 leads (600 mil)
SOT270-1
UDA1325H
QFP64
plastic quad at package; 64 leads (lead length 1.95 mm);
body 14
× 20 × 2.8 mm
SOT319-2
相關PDF資料 |
PDF描述 |
|---|---|
| 935263513518 | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP64 |
| 08-50-0415 | Crimp Pin Contact; Contact Material:Brass; Contact Plating:Tin |
| 08-56-0401 | KK .044 Sq Pin 0.750 20 Gold |
| 08-50-0410 | 8500410 |
| 08-56-0406 | 8560406 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 935267356112 | 制造商:NXP Semiconductors 功能描述:IC TEA1507PN |
| 935268081112 | 制造商:NXP Semiconductors 功能描述:SUB ONLY IC |
| 935268721125 | 制造商:NXP Semiconductors 功能描述:Buffer/Line Driver 1-CH Non-Inverting 3-ST CMOS 5-Pin TSSOP T/R |
| 935269304128 | 制造商:ST-Ericsson 功能描述:IC AUDIO CODEC W/TCH SCRN 48LQFP |
| 935269544557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY TDA9587-2US1-V1.3 |
發(fā)布緊急采購，3分鐘左右您將得到回復。