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AM6548BACDXEAF Datasheet(PDF) 216 Page - Texas Instruments |
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AM6548BACDXEAF Datasheet(HTML) 216 Page - Texas Instruments |
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216 / 282 page ![]() Figure 7-74. eMMC/SD/SDIO in - High Speed - Receiver Mode Figure 7-75. eMMC/SD/SDIO in - High Speed - Transmitter Mode 7.9.5.16.1.3 UHS-I SDR12, 1.8-V Legacy SDR Mode Table 7-57 and Table 7-58 present Timing requirements and Switching characteristics for MMCi - SDR12, 1.8V Legacy SDR in receiver and transmitter mode (see Figure 7-76 and Figure 7-77). Table 7-57. Timing Requirements for MMCi - SDR12, 1.8-V Legacy SDR Mode NO. PARAMETER DESCRIPTION MIN MAX UNIT SDR121 tsu(cmdV-clkH) Setup time, MMCi_CMD valid before MMCi_CLK rising clock edge 10.04 ns SDR122 th(clkH-cmdV) Hold time, MMCi_CMD valid after MMCi_CLK rising clock edge 1.75 ns SDR123 tsu(dV-clkH) Setup time, MMCi_DAT[j:0] valid before MMCi_CLK rising clock edge 10.04 ns SDR124 th(clkH-dV) Hold time, MMCi_DAT[j:0] valid after MMCi_CLK rising clock edge 1.75 ns Table 7-58. Switching Characteristics for MMCi - SDR12, 1.8-V Legacy SDR Mode NO. PARAMETER DESCRIPTION MIN MAX UNIT SDR125 fop(clk) Operating frequency, MMCi_CLK 25 MHz SDR126 tw(clkH) Pulse duration, MMCi_CLK high 18.7 ns SDR127 tw(clkL) Pulse duration, MMCi_CLK low 18.7 ns SDR128 td(clkH-cmdV) Delay time, MMCi_CLK rising clock edge to MMCi_CMD transition 1.12 35.68 ns SDR129 td(clkH-dV) Delay time, MMCi_CLK rising clock edge to MMCi_DAT[j:0] transition 1.12 35.68 ns A. There are two modules in MMCi: MMC0 and MMC1 AM6548, AM6528, AM6526 SPRSP52B – DECEMBER 2019 – REVISED JUNE 2021 www.ti.com 216 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: AM6548 AM6528 AM6526 |
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