參數(shù)資料
型號： PCM1792A
英文描述： 24-bit,192-khz sampling,advanced segment, audio stereo digital-to-analog converter
中文描述： 24位,192 - kHz的采樣，先進(jìn)的部分，立體聲音頻數(shù)字模擬轉(zhuǎn)換器
文件頁數(shù)： 17/59頁
文件大小： 500K
代理商： PCM1792A
SLES105B FEBRUARY 2004 REVISED NOVEMBER 2006
www.ti.com
17
AUDIO DATA INTERFACE
Audio Serial Interface
The audio interface port is a 3-wire serial port. It includes LRCK (pin 4), BCK (pin 6), and DATA (pin 5). BCK is the serial
audio bit clock, and it is used to clock the serial data present on DATA into the serial shift register of the audio interface.
Serial data is clocked into the PCM1792A on the rising edge of BCK. LRCK is the serial audio left/right word clock.
The PCM1792A requires the synchronization of LRCK and system clock, but does not need a specific phase relation
between LRCK and system clock.
If the relationship between LRCK and system clock changes more than
±
6 BCK, internal operation is initialized within 1/f
S
and analog outputs are forced to the bipolar zero level until resynchronization between LRCK and system clock is
completed.
PCM Audio Data Formats and Timing
The PCM1792A supports industry-standard audio data formats, including standard right-justified, I
2
S, and left-justified. The
data formats are shown in Figure 28. Data formats are selected using the format bits, FMT[2:0], in control register 18. The
default data format is 24-bit I
2
S. All formats require binary 2s complement, MSB-first audio data. Figure 27 shows a detailed
timing diagram for the serial audio interface.
DATA
t(BCH)
50% of VDD
BCK
LRCK
t(BCL)
t(LB)
t(BCY)
t(DS)
t(DH)
50% of VDD
50% of VDD
t(BL)
PARAMETERS
MIN
70
MAX
UNITS
ns
t(BCY)
t(BCL)
t(BCH)
t(BL)
t(LB)
t(DS)
t(DH)
—
BCK pulse cycle time
BCK pulse duration, LOW
30
ns
BCK pulse duration, HIGH
30
ns
BCK rising edge to LRCK edge
10
ns
LRCK edge to BCK rising edge
10
ns
DATA setup time
10
ns
DATA hold time
10
50%
±
2 bit clocks
ns
LRCK clock duty
Figure 27. Timing of Audio Interface
相關(guān)PDF資料
PDF描述
PCM1792ADBRG4 24-bit,192-khz sampling,advanced segment, audio stereo digital-to-analog converter
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM1792ADB 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng AdvSegment Ster DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1792ADB 制造商:Texas Instruments 功能描述:D/A CONVERTER (D-A) IC
PCM1792ADBG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24B 192kHz Sampling Adv Seg Aud St DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1792ADBR 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng AdvSegment Ster DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1792ADBRG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24B 192kHz Sampling Adv Seg Aud St DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
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