ST-PLC-AFE datasheet(32/58 Pages) STMICROELECTRONICS

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ST-PLC-AFE 数据表(PDF) 32 Page - STMicroelectronics

部件名	ST-PLC-AFE

功能描述	Power-line communication, analog front-end

PDF	58 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

32 / 58 page

Powering the device and resetting the SPI and registers

ST-PLC-AFE

32/58

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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