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AM5728 Datasheet(PDF) 325 Page - Texas Instruments |
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AM5728 Datasheet(HTML) 325 Page - Texas Instruments |
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325 / 415 page  mmc _clk 1 mmc _cmd 1 mmc _dat[3:0] 1 DDR503(min) DDR504(max) DDR504(min) DDR504(min) vayu_mmc1_14 DDR500 DDR501 DDR502 DDR503(max) DDR504(max) mmc _clk 1 mmc _cmd 1 mmc _dat[3:0] 1 DDR506 DDR508 DDR507 DDR507 DDR508 vayu_mmc1_13 DDR502 DDR501 DDR505 DDR500 325 AM5729, AM5728, AM5726 www.ti.com SPRS953F – DECEMBER 2015 – REVISED MAY 2019 Submit Documentation Feedback Product Folder Links: AM5729 AM5728 AM5726 Timing Requirements and Switching Characteristics Copyright © 2015–2019, Texas Instruments Incorporated Table 7-102. Switching Characteristics for MMC1 - SD Card DDR50 Mode NO. PARAMETER DESCRIPTION MIN MAX UNIT DDR500 fop(clk) Operating frequency, mmc1_clk 48 MHz DDR501 tw(clkH) Pulse duration, mmc1_clk high 0.5*P- 0.185 (1) ns DDR502 tw(clkL) Pulse duration, mmc1_clk low 0.5*P- 0.185 (1) ns DDR503 td(clk-cmdV) Delay time, mmc1_clk transition to mmc1_cmd transition 1.225 6.6 ns DDR504 td(clk-dV) Delay time, mmc1_clk transition to mmc1_dat[3:0] transition 1.225 6.6 ns (1) P = output mmc1_clk period in ns Figure 7-72. SDMMC - High Speed SD - DDR - Data/Command Receive Figure 7-73. SDMMC - High Speed SD - DDR - Data/Command Transmit NOTE To configure the desired virtual mode the user must set MODESELECT bit and DELAYMODE bitfield for each corresponding pad control register. The pad control registers are presented in Table 4-3 and described in Device TRM, Control Module Chapter. Virtual IO Timings Modes must be used to ensure some IO timings for MMC1. See Table 7-2 Modes Summary for a list of IO timings requiring the use of Virtual IO Timings Modes. See Table 7-103 Virtual Functions Mapping for MMC1 for a definition of the Virtual modes. Table 7-103 presents the values for DELAYMODE bitfield. Table 7-103. Virtual Functions Mapping for MMC1 BALL BALL NAME Delay Mode Value MUXMODE[15: 0] MMC1_VIRTUA L1 MMC1_VIRTU AL2 MMC1_VIRTUA L5 MMC1_VIRTUA L6 MMC1_VIRTUA L7 0 W6 mmc1_clk 11 10 7 6 5 mmc1_clk |
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