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參數(shù)資料
| 型號(hào)： | DSD1792ADBG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 24-BIT DAC, PDSO28 |
| 封裝： | GREEN, PLASTIC, TSSOP-28 |
| 文件頁數(shù)： | 38/57頁 |
| 文件大?。?/td> | 634K |
| 代理商： | DSD1792ADBG4 |
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DSD1792A
SLES106B FEBRUARY 2004 REVISED NOVEMBER 2006
www.ti.com
43
Device ID Determination
The TDMCA mode also supports a multichip implementation in one system. This means a host controller (DSP)
can simultaneously support several TDMCA devices, which can be of the same type or different types, including
PCM devices. The PCM devices are categorized as IN device, OUT device, IN/OUT device, and NO device.
The IN device has an input port to get audio data, the OUT device has an output port to supply audio data, the
IN/OUT device has both input and output ports for audio data, and the NO device has no port for audio data
but needs command data from the host. A DAC is an IN device, an ADC is an OUT device, a CODEC is an
IN/OUT device, and a PLL is a NO device. The DSD1792A is an IN device. For the host controller to distinguish
the devices, each device is assigned its own device ID by the daisy chain. The devices obtain their own device
IDs automatically by connecting their DCI to the DCO of the preceding device and their DCO to the DCI of the
following device in the daisy chain. The daisy chains are categorized as the IN chain and the OUT chain, which
are completely independent and equivalent. Figure 52 shows an example daisy-chain connection. If a system
needs to chain the DSD1792A and a NO device in the same IN or OUT chain, the NO device should be chained
at the back end of the chain because it does not require any audio data. Figure 53 shows an example of TDMCA
system including an IN chain and an OUT chain with a TI DSP. For a device to get its own device ID, the DID
signal must be set to 1 (see the Command Field section for details), and LRCK and BCK must be driven in the
TDMCA mode for all PCM devices which are chained. The device at the top of the chain knows its device ID
is 1 because its DCI is fixed HIGH. Other devices count the BCK pulses and observe their own DCI signal to
determine their position and ID. Figure 54 shows the initialization of each device ID.
IN Device
DCI
DCO
OUT Device
DCI
DCO
IN
OUT
IN/OUT
IN Chain
OUT Chain
IN Device
OUT Device
DCI
DCO
DCI
DCO
DCIi
DCIo
DCOi
DCOo
IN
OUT
DCIi
DCIo
DCOi
DCOo
NO Device
DCI
DCO
NO Device
DCI
DCO
NO Device
DCI
DCO
DCI
DCO
Device
IN/OUT
Device
Figure 52. Daisy-Chain Connection
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| DSD1792ADBR | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24B 192kHz Sampl Adv Segment 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 |
| DSD1792ADBRG4 | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24B 192kHz Sampl Adv Segment 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 |
| DSD1792DB | 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 |
| DSD1792DBG4 | 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 |
| DSD1792DBR | 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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