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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AMC131M02 датащи(PDF) 45 Page - Texas Instruments |
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AMC131M02 датащи(HTML) 45 Page - Texas Instruments |
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45 / 89 page  8.5.3.7.1 Reading a Single Register Read a single register from the device by specifying nnn nnnn as zero in the RREG command word. As with all SPI commands on the AMC131M02, the response occurs on the output in the frame following the command. Instead of a unique acknowledgment word, the response word is the contents of the register whose address is specified in the command word. Figure 8-25 shows an example of reading a single register. DRDY CS SCLK DIN DOUT Channel 0 Data Channel 1 Data CRC Response Hi-Z Hi-Z Channel 0 Data Register Data RREG CRC Command CRC Figure 8-25. Reading a Single Register 8.5.3.7.2 Reading Multiple Registers Multiple registers are read from the device when nnn nnnn is specified as a number greater than zero in the RREG command word. As with all SPI commands on the AMC131M02, the response occurs on the output in the frame following the command. Instead of a single acknowledgment word, the response spans multiple words to shift out all requested registers. Continue toggling SCLK to accommodate outputting the entire data stream. ADC conversion data are not output in the frame following an RREG command to read multiple registers. Figure 8-26 shows an example of reading multiple registers. CS SCLK DIN DOUT Channel 0 Data Channel 1 Data CRC Response Hi-Z Hi-Z RREG ack RREG CRC Command 1 st UHJLVWHU¶V data 2 nd UHJLVWHU¶V data N-1 th UHJLVWHU¶V data N th UHJLVWHU¶V data CRC Hi-Z CRC Figure 8-26. Reading Multiple Registers www.ti.com AMC131M02 SBASA56 – SEPTEMBER 2023 Copyright © 2023 Texas Instruments Incorporated Submit Document Feedback 45 Product Folder Links: AMC131M02 |
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