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參數(shù)資料
| 型號： | PCM1794ADBRG4 |
| 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)： | 23/30頁 |
| 文件大?。?/td> | 301K |
| 代理商： | PCM1794ADBRG4 |
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SLES117A – AUGUST 2004 – REVISED NOVEMBER 2006
www.ti.com
23
Application for Interfacing With an External Digital Filter
For some applications, it may be desirable to use a programmable digital signal processor as an external digital filter
to perform the interpolation function. The following pin settings enable the external digital filter application mode.
MONO (pin 1) = LOW
CHSL (Pin 2) = HIGH
FMT0 (Pin 11) = HIGH
FMT1 (pin 12) = HIGH
The pins used to provide the serial interface for the external digital filter are shown in the connection diagram of
Figure 27. The word clock (WDCK) must be operated at 8
×
or 4
×
the desired sampling frequency, f
S
.
System Clock (SCK) and Interface Timing
The PCM1794A 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, and DATA is
shown in Figure 29.
Audio Format
The PCM1794A in the external digital filter interface mode supports right-justified audio formats including 24-bit audio
data, as shown in Figure 28.
BCK
1/4 fS or 1/8 fS
WDCK
Audio Data Word = 24-Bit
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
DATA
Figure 28. Audio Data Input Format for External Digital Filter (Internal DF Bypass Mode) Application
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| PCM1794AQDBRQ1 | 功能描述:DAC, Audio 24 bit 192k I2S, PCM 28-SSOP 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:DAC，音頻 分辨率（位）:24 b 采樣率（每秒）:192k 數(shù)據(jù)接口:I2S，PCM 電壓源:模擬和數(shù)字 電壓 - 電源:3 V ~ 3.6 V，5V 工作溫度:-25°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商器件封裝:28-SSOP 標(biāo)準(zhǔn)包裝:1 |
| PCM1794DB | 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 |
| PCM1794DB | 制造商:Texas Instruments 功能描述:24BIT AUDIO DAC SMD 1794 SSOP28 |
| PCM1794DBG4 | 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 |
| PCM1794DBR | 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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