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PCIMX536AVV8B bảng dữ liệu(PDF) 72 Page - Freescale Semiconductor, Inc |
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PCIMX536AVV8B bảng dữ liệu(HTML) 72 Page - Freescale Semiconductor, Inc |
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72 / 180 page ![]() i.MX53xA Automotive and Infotainment Applications Processors, Rev. 1 72 Freescale Semiconductor Electrical Characteristics 4.7.4 Enhanced Secured Digital Host Controller(eSDHCv2/v3) AC timing This section describes the electrical information of the eSDHCv2/v3, which includes SD/eMMC4.3 (Single Data Rate) timing and eMMC4.4 (Dual Date Rate) timing. 4.7.4.1 SD/eMMC4.3 (Single Data Rate) AC Timing Figure 34 depicts the timing of SD/eMMC4.3, and Table 46 lists the SD/eMMC4.3 timing characteristics. Figure 34. SD/eMMC4.3 Timing Table 46. 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 eSDHC Output/Card Inputs CMD, DAT (Reference to CLK) SD6 eSDHC Output Delay tOD –5 5 ns eSDHC Input/Card Outputs CMD, DAT (Reference to CLK) SD1 SD3 SD5 SD4 SD7 CMD output from eSDHCv2 to card DAT1 ...... DAT7 DAT0 CMD input from card to eSDHCv2 DAT1 ...... DAT7 DAT0 SCK SD2 SD8 SD6 |
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