參數(shù)資料
型號(hào)： PCM1792ADBR
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)： 39/59頁
文件大?。?/td> 500K
代理商： PCM1792ADBR
SLES105B FEBRUARY 2004 REVISED NOVEMBER 2006
www.ti.com
39
Application for Interfacing With an External Digital Filter
For some applications, it may be desirable to use an external digital filter to perform the interpolation function,
as it can provide improved stop-band attenuation when compared to the internal digital filter of the PCM1792A.
The PCM1792A supports several external digital filters, including:
Texas Instruments DF1704 and DF1706
Pacific Microsonics PMD200 HDCD filter/decoder IC
Programmable digital signal processors
The external digital filter application mode is accessed by programming the following bits in the corresponding
control register:
DFTH = 1 (register 20)
The pins used to provide the serial interface for the external digital filter are shown in the connection diagram
of Figure 40. The word (WDCK) signal must be operated at 8
×
or 4
×
the desired sampling frequency, f
S
.
System Clock (SCK) and Interface Timing
The PCM1792A in an application using an external digital filter requires the synchronization of WDCK and the
system clock. The system clock is phase-free with respect to WDCK. Interface timing among WDCK, BCK,
DATAL, and DATAR is shown in Figure 42.
Audio Format
The PCM1792A in the external digital filter interface mode supports right-justified audio formats including 16-bit,
20-bit, and 24-bit audio data, as shown in Figure 41. The audio format is selected by the FMT[2:0] bits of control
register 18.
MSB
LSB
16
BCK
DATA
1/4 fS or 1/8 fS
DATA
DATA
WDCK
Audio Data Word = 16-Bit
Audio Data Word = 20-Bit
Audio Data Word = 24-Bit
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15
16
15
MSB
LSB
16
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15
20
19
20
17 18 19
MSB
LSB
16
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15
24
23
20
17 18 19
24
21 22 23
Figure 41. Audio Data Input Format for External Digital Filter (Internal DF Bypass Mode) Application
相關(guān)PDF資料
PDF描述
PCM1794ADB 24-bit,192-khz sampling,advanced segment, audio stereo digital-to-analog converter
PCM1794ADBR 24-bit,192-khz sampling,advanced segment, audio stereo digital-to-analog converter
PCM1794A 24-bit,192-khz sampling,advanced segment, audio stereo digital-to-analog converter
PCM1794ADBRG4 24-bit,192-khz sampling,advanced segment, audio stereo digital-to-analog converter
PCM1794ADBG4 24-bit,192-khz sampling,advanced segment, audio stereo digital-to-analog converter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
PCM1792DB 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng Adv Stg Stereo 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
PCM1792DB 制造商:Texas Instruments 功能描述:24BIT AUDIO DAC SMD 1792 SSOP28
PCM1792DBG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng Adv Stg Stereo 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
PCM1792DBR 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng Adv Stg Stereo 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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