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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADE9078ACPZ датащи(PDF) 74 Page - Analog Devices |
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ADE9078ACPZ датащи(HTML) 74 Page - Analog Devices |
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74 / 108 page  Data Sheet ADE9078 Rev. 0 | Page 73 of 107 SCLK MOSI MISO MISO SS CMD_HDR = 0x8018 VA AT 0x801 CRC, 16 BITS 0 0 15 0 BURST_EN = 0 ADDRESS 0x800 TO 0xFFF BURST_CHAN = 1111 BURST_EN = 1 ADDRESS 0x800 TO 0xFFF BURST_CHAN = 1111 15 0 IA AT 0x801 15 15 15 VA AT 0x801 0 15 0 IA AT 0x801 VA AT 0x801 15 0 IA AT 0x801 15 Figure 113. Waveform Buffer SPI Single Address Read of Resampled Data with BURST_CHAN = 1111 SPI CRC when Reading the Waveform Buffer When reading fixed data rate samples with WF_CAP_SEL = 1, data read out of the waveform buffer has a CRC calculated, which is stored into the CRC_SPI register and can be read back after the waveform buffer burst read. When reading a single address of waveform buffer data, the CRC_SPI is calculated and appended after the 32-bit data, as shown in Figure 112. Note that when reading resampled data out of the waveform buffer, when WF_CAP_SEL = 0, the CRC _RSLT register is not updated. It is recommended to read the waveform buffer a second time to check the integrity of the SPI read data. SPI Last Data Register when Reading the Waveform Buffer If BURST_CHAN = 1111, the LAST_DATA_32 register is updated after reading a sample in the waveform buffer. Note that the LAST_DATA_32 register is not updated when reading the waveform buffer samples if BURST_CHAN is not equal to 1111. |
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