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ST-PLC-AFE 데이터시트(PDF) 32 Page - STMicroelectronics

부품명 ST-PLC-AFE
상세설명  Power-line communication, analog front-end
PDF  58 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST-PLC-AFE 데이터시트(HTML) 32 Page - STMicroelectronics

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Powering the device and resetting the SPI and registers
ST-PLC-AFE
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DocID028727 Rev 1
7.4
Use of an external DAC
Figure 16. Register access with an external DAC
The Data register is used to update the DAC output. It is programmed directly by the SPI at
address 000h. Data are transferred to the DAC at the rising edge of DAC_CLK pin which
triggers the start of a conversion.
The DAC_CLK pin must be supplied with a stable, low-jitter, clock signal at the required
sample frequency.
The SCLK and DAC_CLK pins can be completely asynchronous, but SCLK must be more
than 16 times the frequency of the DAC_CLK pin to ensure that the Data register is updated
with a new sample between each DAC_CLK pulse.



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