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AMC7812SPAPR bảng dữ liệu(PDF) 57 Page - Texas Instruments |
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AMC7812SPAPR bảng dữ liệu(HTML) 57 Page - Texas Instruments |
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57 / 92 page ![]() SDI SDO CS R0 R1 R2 R3 XX D0 D1 D2 D3 AnyCommand R XX=Don’tcare,undefined n N n N =ReadCommandforRegister D =DatafromRegister SDI SDO W0 W1 W2 W3 XX CS XX XX XX W =WriteCommandforRegister XX=Don’tcare,undefined n N AMC7812 www.ti.com SBAS513E – JANUARY 2011 – REVISED SEPTEMBER 2013 Standalone Operation In standalone mode, as shown in Figure 105, each AMC7812 has its own SPI bus. The serial clock can be continuous or gated. The first falling edge of CS starts the operation cycle. Exactly 24 falling clock edges must be applied before CS is brought high again. If CS is brought high before the 24th falling SCLK edge, or if more than 24 falling SCLK edges are applied before CS is brought high, then the input data are incorrect. The device input register is updated from the Shift Register on the rising edge of CS, and data are automatically transferred to the addressed registers as well. In order for another serial transfer to occur, CS must be brought low again. Figure 106 and Figure 107 show write, and read operations in standalone mode. Figure 105. Standalone Operation Figure 106. Write Operation in Standalone Mode Figure 107. Read Operation in Standalone Mode Copyright © 2011–2013, Texas Instruments Incorporated Submit Documentation Feedback 57 Product Folder Links: AMC7812 |
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