參數(shù)資料
型號(hào)： PCM1792DBG4
廠商： Texas Instruments
文件頁(yè)數(shù)： 11/61頁(yè)
文件大?。?/td> 0K
描述： IC DAC 24BIT STER 192KHZ 28-SSOP
產(chǎn)品培訓(xùn)模塊： Data Converter Basics
標(biāo)準(zhǔn)包裝： 47
位數(shù)： 24
數(shù)據(jù)接口： I²C，串行，SPI?
轉(zhuǎn)換器數(shù)目： 2
電壓電源： 模擬和數(shù)字
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)商設(shè)備封裝： 28-SSOP
包裝： 管件
輸出數(shù)目和類型： 2 電壓，單極
采樣率（每秒）： 200k
PCM1792
SLES069B MARCH 2003 REVISED NOVEMBER 2006
www.ti.com
19
External Digital Filter Interface and Timing
The PCM1792 supports an external digital filter interface comprising a 3- or 4-wire synchronous serial port, which
allows the use of an external digital filter. External filters include the Texas Instruments’ DF1704 and DF1706, the
Pacific Microsonics PMD200, or a programmable digital signal processor.
In the external DF mode, LRCK (pin 4), BCK (pin 6) and DATA (pin 5) are defined as WDCK, the word clock; BCK,
the bit clock; and DATA, the monaural data. The external digital filter interface is selected by using the DFTH bit of
control register 20, which functions to bypass the internal digital filter of the PCM1792.
When the DFMS bit of control register 19 is set, the PCM1792 can process stereo data. In this case, ZEROL (pin 1)
and ZEROR (pin 2) are defined as L-channel data and R-channel data, respectively.
Detailed information for the external digital filter interface mode is provided in the APPLICATION FOR EXTERNAL
DIGITAL FILTER INTERFACE section of this data sheet.
Direct Stream Digital (DSD) Format Interface and Timing
The PCM1792 supports the DSD-format interface operation, which includes out-of-band noise filtering using an
internal analog FIR filter. For DSD operation, SCK (pin 7) is redefined as BCK, DATA (pin 5) as DATAL (left channel
audio data), and LRCK (pin 4) as DATAR (right channel audio data). BCK (pin 6) must be forced low in the DSD mode.
The DSD-format interface is activated by setting the DSD bit of control register 20.
Detailed information for the DSD mode is provided in the APPLICATION FOR DSD-FORMAT (DSD MODE)
INTERFACE section of this data sheet.
TDMCA Interface
The PCM1792 supports the time-division-multiplexed command and audio (TDMCA) data format to enable control
of and communication with a number of external devices over a single serial interface.
Detailed information for the TDMCA format is provided in the TDMCA Format section of this data sheet.
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