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AD1855 Scheda tecnica(PDF) 9 Page - Analog Devices |
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AD1855 Scheda tecnica(HTML) 9 Page - Analog Devices |
9 / 15 page AD1855 –9– REV. B CLATCH CCLK 20 40 60 80 100 120 140 160 180 CDATA >130ns TIME – ns Figure 7. SPI Port Continuous CCLK Mode CLATCH CCLK CDATA TIME – ns 200 400 600 800 1000 1200 1400 1600 1800 Figure 8. SPI Port Burst Mode SPI Port Modes The SPI port can be used in either of two modes, Burst Mode, or Continuous CCLK Mode, as described below: Continuous CCLK Mode In this mode, the maximum CCLK frequency is 3 MHz. The CCLK can run continuously between transactions. Please note that the Low-to-Hi transition of the CLATCH with respect to the rising edge of CCLK must be at least 130 ns, as shown in Figure 7. Burst Mode To operate with SPI CCLK frequencies up to 12.288 MHz, the SPI port can be operated in Burst Mode. This means that when CLATCH is high, CCLK cannot be HI, as shown in Figure 8. |
Codice articolo simile - AD1855_15 |
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Descrizione simile - AD1855_15 |
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