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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IMX6SDLCEC датащи(PDF) 79 Page - NXP Semiconductors |
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IMX6SDLCEC датащи(HTML) 79 Page - NXP Semiconductors |
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79 / 169 page  Electrical Characteristics i.MX 6Solo/6DualLite Applications Processors for Consumer Products, Rev. 9, 11/2018 NXP Semiconductors 79 4.11.4 Ultra High Speed SD/SDIO/MMC Host Interface (uSDHC) AC Timing This section describes the electrical information of the uSDHC, which includes SD/eMMC4.3 (Single Data Rate) timing, eMMC4.4/4.41 (Dual Date Rate) timing and SDR104/50(SD3.0) timing. 4.11.4.1 SD/eMMC4.3 (Single Data Rate) AC Timing Figure 40 depicts the timing of SD/eMMC4.3, and Table 52 lists the SD/eMMC4.3 timing characteristics. Figure 40. SD/eMMC4.3 Timing Table 52. SD/eMMC4.3 Interface Timing Specification ID Parameter Symbols Min Max Unit Card Input Clock SD1 Clock Frequency (Low Speed) fPP 1 0 400 kHz Clock Frequency (SD/SDIO Full Speed/High Speed) fPP 2 0 25/50 MHz Clock Frequency (MMC Full Speed/High Speed) fPP 3 0 20/52 MHz Clock Frequency (Identification Mode) fOD 100 400 kHz SD2 Clock Low Time tWL 7— ns SD3 Clock High Time tWH 7— ns SD4 Clock Rise Time tTLH —3 ns SD5 Clock Fall Time tTHL —3 ns uSDHC Output/Card Inputs SDx_CMD, SDx_DATAx (Reference to CLK) SD6 uSDHC Output Delay tOD -6.6 3.6 ns SD1 SD3 SD5 SD4 SD7 SDx_CLK SD2 SD8 SD6 Output from uSDHC to card Input from card to uSDHC SDx_DATA[7:0] SDx_DATA[7:0] |
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