參數(shù)資料
型號(hào)： PCM4204
元件分類： ADC
英文描述： HIGH PERFORMANCE 24 BIT 216KHZ SAMPLING FOUR CHANNEL AUDIO ANALOG TO DIGITAL CONVERTER
中文描述： 高性能的24位216kHz的最大采樣四通道音頻模數(shù)轉(zhuǎn)換器
文件頁(yè)數(shù)： 20/34頁(yè)
文件大?。?/td> 554K
代理商： PCM4204
$%
SBAS327A JUNE 2004 REVISED SEPTEMBER 2004
www.ti.com
20
In Slave mode, the BCK and LRCK signals are inputs, with
the clocks being generated by a master timing source,
such as a DSP serial port, PLL clock synthesizer, or a
crystal oscillator/divider circuit. For Left Justified, Right
Justified, and I
2
S data formats, the BCK rate is typically
128f
S
in Single Rate sampling mode, and 64f
S
in Dual or
Quad Rate sampling modes. Although other BCK clock
rates are possible, they are not recommended due to the
potential for clock phase sensitivity issues, which may
degrade the dynamic performance of the PCM4204. The
LRCK clock operates at f
S
, the output sampling rate.
Figure 6 illustrates the typical audio serial port
connections between a PCM4204 and an audio signal
processor when using Left-Justified, Right-Justified, and
I
2
S data formats in either Slave or Master modes.
LRCK
BCK
SDOUT1
SDOUT2
FSR
CLKR
DR0
DR1
System Clock
PCM4204
DSP
SCKI
Figure 6. Typical Audio Serial Port Connections
for Left-Justified, Right-Justified, and Philips I
2
S
Data Formats
In Slave mode, the TDM data formats support a BCK clock
rate of 256f
S
for Long Frame operation, and 128f
S
for Short
Frame operation. The length and rate of the TDM frame is
autodetected by the audio serial port. Long Frame
operation is supported for Single and Dual rate sampling
modes only. Short Frame operation is supported for all
sampling modes.
For the TDM data formats, the maximum BCK rate is
27.648MHz for either Long or Short Frame operation. The
LRCK clock operates at f
S
, the output sampling rate. The
minimum clock high time for the LRCK clock is one BCK
clock period. The start of frame is referenced to the rising
edge of the LRCK signal.
Sub-frame selection for Long Frame TDM operation is
accomplished by using the SUB input (pin 39). When SUB
= 0, the PCM4204 is assigned to sub-frame 0. The
SDOUT1 pin will be driven during sub-frame 0 and
tri-stated during sub-frame 1. When SUB = 1, the
PCM4204 is assigned to sub-frame 1. The SDOUT1 pin
will be driven during sub-frame 1 and tri-stated during
sub-frame 0. For Short Frame TDM operation, the SUB pin
is ignored, although driving or hardwiring the SUB pin low
is an acceptable practice. Figure 7 shows two PCM4204
devices and an audio DSP in a typical TDM format
application.
Figure 8 and Figure 9 illustrate the PCM4204 audio serial
port timing for both Master and Slave mode operation.
SystemClock
SUB
SUB
PCM4204
PCM4204
Device#1
(SubFrame0)
Device#2
(SubFrame1)
SCKI
V
CC
FSR
CLKR
DR
LRCK
BCK
SDOUT1
LRCK
BCK
SDOUT1
DSP
Figure 7. TDM Connections for Two PCM4204 Devices and an Audio DSP
相關(guān)PDF資料
PDF描述
PCM4204PAPR HIGH PERFORMANCE 24 BIT 216KHZ SAMPLING FOUR CHANNEL AUDIO ANALOG TO DIGITAL CONVERTER
PCM4204PAPT HIGH PERFORMANCE 24 BIT 216KHZ SAMPLING FOUR CHANNEL AUDIO ANALOG TO DIGITAL CONVERTER
PCM54 16-Bit Monolithic DIGITAL-TO-ANALOG CONVERTERS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM4204EVM 功能描述:音頻 IC 開(kāi)發(fā)工具 PCM4204 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
PCM4204PAPR 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC 24-Bit/192kHz 118dB 4-Ch Audio A/D RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
PCM4204PAPRG4 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC 24-Bit/192kHz 118dB 4-Ch Audio A/D RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
PCM4204PAPT 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC 24-Bit/192kHz 118dB 4-Ch Audio A/D RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
PCM4204PAPTG4 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC 24-Bit/192kHz 118dB 4-Ch Audio A/D RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
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