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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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DRA821U2...ALM Datenblatt(PDF) 206 Page - Texas Instruments |
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DRA821U2...ALM Datenblatt(HTML) 206 Page - Texas Instruments |
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206 / 252 page  Table 7-69. MMCSD1 Timing Requirements – UHS-I SDR12 Mode (continued) NO. PARAMETER DESCRIPTION MIN MAX UNIT SDR124 th(clkH-dV) Hold time, MMC[x]_DAT[3:0] valid after MMC[x]_CLK rising edge 1.67 ns MMC[ ]_CMD x MMC DAT [ ]_ [3:0] x SDR121 SDR122 SDR123 SDR124 MMC[ ]_CLK x Figure 7-95. MMCSD1 – UHS-I SDR12 – Receive Mode Table 7-70. MMCSD1 Switching Characteristics – UHS-I SDR12 Mode NO. PARAMETER DESCRIPTION MIN MAX UNIT fop(clk) Operating frequency, MMC[x]_CLK 25 MHz SDR125 tc(clk) Cycle time, MMC[x]_CLK 40 ns SDR126 tw(clkH) Pulse duration, MMC[x]_CLK high 18.7 ns SDR127 tw(clkL) Pulse duration, MMC[x]_CLK low 18.7 ns SDR128 td(clkH-cmdV) Delay time, MMC[x]_CLK rising edge to MMC[x]_CMD transition 1.2 13.55 ns SDR129 td(clkH-dV) Delay time, MMC[x]_CLK rising edge to MMC[x]_DAT[3:0] transition 1.2 13.55 ns MMC[ ]_CLK x MMC CMD [ ]_ x MMC DAT [ ]_ [3:0] x SDR125 SDR127 SDR126 SDR128 SDR129 SDR128 SDR129 Figure 7-96. MMCSD1 – UHS-I SDR12 – Transmit Mode 7.9.5.16.2.4 UHS–I SDR25 Mode Table 7-71 and Table 7-72 present timing requirements and switching characteristics for MMCSDi – UHS-I SDR25 Mode (see Figure 7-97 and Figure 7-98). Table 7-71. MMCSD1 Timing Requirements – UHS-I SDR25 Mode NO. PARAMETER DESCRIPTION MIN MAX UNIT SDR251 tsu(cmdV-clkH) Setup time, MMC[x]_CMD valid before MMC[x]_CLK rising edge 2.1 ns SDR252 th(clkH-cmdV) Hold time, MMC[x]_CMD valid after MMC[x]_CLK rising edge 1.67 ns SDR253 tsu(dV-clkH) Setup time, MMC[x]_DAT[3:0] valid before MMC[x]_CLK rising edge 2.1 ns SDR254 th(clkH-dV) Hold time, MMC[x]_DAT[3:0] valid after MMC[x]_CLK rising edge 1.67 ns MMC[ ]_CLK x MMC[ ]_CMD x MMC DAT [ ]_ [3:0] x SDR251 SDR252 SDR253 SDR254 Figure 7-97. MMCSD1 – UHS-I SDR25 – Receive Mode DRA821U-Q1 SPRSP57D – APRIL 2020 – REVISED DECEMBER 2022 www.ti.com 206 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: DRA821U-Q1 |
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