參數(shù)資料
型號(hào)： TLV320DAC23PWG4
廠商： TEXAS INSTRUMENTS INC
元件分類： DAC
英文描述： SERIAL INPUT LOADING, 32-BIT DAC, PDSO28
封裝： GREEN, PLASTIC, TSSOP-28
文件頁數(shù)： 8/39頁
文件大?。?/td> 664K
代理商： TLV320DAC23PWG4
31
3 How to Use the DAC23
3.1
Control Interfaces
The TLV320DAC23 has many programmable features. The control interface is used to program the registers of the
device. The control interface complies with SPI (three-wire operation) and two-wire operation specifications. The
state of the MODE terminal selects the control interface type. The MODE pin must be hardwired to the required level.
MODE
INTERFACE
0
2-wire
1
SPI
3.1.1
SPI
In SPI mode, SDI carries the serial data, SCLK is the serial clock and CS latches the data word into the
TLV320DAC23. The interface is compatible with microcontrollers and DSPs with an SPI interface.
A control word consists of 16 bits, starting with the MSB. The data bits are latched on the rising edge of SCLK. A rising
edge on CS after the sixteenth rising clock edge latches the data word into the DAC (see Figure 3-1).
The control word is divided into two parts. The first part is the address block, the second part is the data block:
B[15:9]
Control address bits
B[8:0]
Control data bits
B15 B14 B13 B12 B11 B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
MSB
LSB
CS
SCLK
SDI
Figure 31. SPI Timing
3.1.2
2-Wire
In 2-wire mode, the data transfer uses SDI for the serial data and SCLK for the serial clock. The start condition is a
falling edge on SDIN while SCLK is high. The seven bits following the start condition determine the device on the
2-wire bus that receives the data. R/W determines the direction of the data transfer. The TLV320DAC23 is a write
only device and responds only if R/W is 0. The device operates only as a slave device whose address is selected
by setting the state of the CS pin as follows.
CS STATE
(Default = 0)
ADDRESS
0
0011010
1
0011011
The device that recognizes the address responds by pulling SDI low during the ninth clock cycle, acknowledging the
data transfer. The control follows in the next two eight-bit blocks. The stop condition after the data transfer is a rising
edge on SDI when SCLK is high (see Figure 3-2).
相關(guān)PDF資料
PDF描述
TLV320DAC23PW SERIAL INPUT LOADING, 32-BIT DAC, PDSO28
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLV320DAC23PWR 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Low-Power Portable Aud Converter 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
TLV320DAC23PWRG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Low-Power Portable Aud Converter 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
TLV320DAC23RHD 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Low-Power Portable Aud Converter 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
TLV320DAC23RHDG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Low-Power Portable Aud Converter 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
TLV320DAC23RHDR 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Low-Power Portable Aud Converter 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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