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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IMXRT1024IEC датащи(PDF) 46 Page - NXP Semiconductors |
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IMXRT1024IEC датащи(HTML) 46 Page - NXP Semiconductors |
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46 / 90 page  i.MX RT1024 Crossover Processors Data Sheet for Industrial Products, Rev. 0, 11/2020 46 NXP Semiconductors Electrical characteristics NOTE Timing shown is based on the memory generating read data and read strobe on the SCK rising edge. The FlexSPI controller samples read data on the DQS falling edge. Figure 22. FlexSPI input timing in SDR mode where FlexSPIn_MCR0[RXCLKSRC] = 0X3 (Case A2) NOTE Timing shown is based on the memory generating read data on the SCK falling edge and read strobe on the SCK rising edge. The FlexSPI controller samples read data on a half cycle delayed DQS falling edge. 4.5.2.1.3 DDR mode with FlexSPIn_MCR0[RXCLKSRC] = 0x0, 0x1 Table 39. FlexSPI input timing in SDR mode where FlexSPIn_MCR0[RXCLKSRC] = 0x3 (Case A2) Symbol Parameter Value Unit Min Max — Frequency of operation — 166 MHz TSCKD Time from SCK to data valid — — ns TSCKDQS Time from SCK to DQS — — ns TSCKD - TSCKDQS Time delta between TSCKD and TSCKDQS -2 2 ns Table 40. FlexSPI input timing in DDR mode where FlexSPIn_MCR0[RXCLKSRC] = 0x0 Symbol Parameter Min Max Unit — Frequency of operation — 30 MHz TIS Setup time for incoming data 8.67 — ns TIH Hold time for incoming data 0 — ns TSCKDQS TSCKD SCK SIO[0:7] DQS Internal Sample Clock TSCKDQS TSCKD TSCKDQS TSCKD |
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