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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADAS3023 датащи(PDF) 27 Page - Analog Devices |
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ADAS3023 датащи(HTML) 27 Page - Analog Devices |
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27 / 32 page  Data Sheet ADAS3023 to access the data result prior to initiating a new conversion produces an invalid result. Upon the device returning from power-down mode or from a reset when the default CFG is not used, there is no tACQ requirement because the first two conversions from power-up are undefined/ invalid because the one-deep delay pipeline requirement must be satisfied to reconfigure the device to the desired setting. SERIAL DATA INTERFACE The ADAS3023 uses a simple 4-wire interface and is compatible with FPGAs, DSPs, and common serial interfaces such as a serial peripheral interface (SPI), QSPI™, and MICROWIRE®. The interface uses the CS, SCK, SDO, and DIN signals. Timing signals for a serial interface are shown in Figure 47. SDO is activated when CS is asserted. The conversion result is output on SDO and updated on the SCK falling edges. Simulta- neously, the 16-bit CFG word is updated, if needed, on the serial data input (DIN). The state of BUSY/SDO2 (Bit 0) determines the output format of the MSB data when SDO is activated after the EOC. Note that, in Figure 47, SCK is shown as idling high. SCK can idle high or low, requiring the system developer to design an interface that suits setup and hold times for both SDO and DIN. Figure 47. Serial Timing DIN (MOSI) SDO (MISO) CS SCK tDINH tDINS tSDOV tSDOH tSCKL tSCK tSCKH tDIS tEN Rev. 0 | Page 27 of 32 |
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