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AM6421 Datasheet(PDF) 178 Page - Texas Instruments |
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AM6421 Datasheet(HTML) 178 Page - Texas Instruments |
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178 / 237 page  Table 7-63. MMC0 Switching Characteristics – HS200 Mode (continued) see Figure 7-63 NO. PARAMETER DESCRIPTION MIN MAX UNIT HS2002L tw(clkL) Pulse duration, MMC0_CLK low 2.08 ns HS2005 td(clkL-cmdV) Delay time, MMC0_CLK rising edge to MMC0_CMD transition 0.99 3.28 ns HS2006 td(clkL-dV) Delay time, MMC0_CLK rising edge to MMC0_DAT[7:0] transition 0.99 3.28 ns MMC0 CLK _ MMC0 CMD _ MMC0 DAT[7:0] _ HS2005 HS2005 HS2006 HS2006 HS2001 HS2002H HS2002L J7_MMC0_TIMING_07 Figure 7-63. MMC0 – HS200 Mode – Transmit Mode 7.10.5.12.2 MMC1 - SD/SDIO Interface MMC1 interface is compliant with the SD Host Controller Standard Specification 4.10 and SD Physical Layer Specification v3.01 as well as SDIO Specification v3.00 and it supports the following SD Card applications: • Default speed • High speed • UHS–I SDR12 • UHS–I SDR25 • UHS–I SDR50 • UHS–I SDR104 • UHS–I DDR50 Table 7-64 presents the required DLL software configuration settings for MMC1 timing modes. Table 7-64. MMC1 DLL Delay Mapping for All Timing Modes REGISTER NAME MMCSD1_SS_PHY_CTRL_4_REG MMCSD1_SS_PHY_CTRL_5_REG BIT FIELD [20] [15:12] [8] [4:0] [2:0] BIT FIELD NAME OTAPDLYENA OTAPDLYSEL ITAPDLYENA ITAPDLYSEL CLKBUFSEL MODE DESCRIPTION DELAY ENABLE DELAY VALUE INPUT DELAY ENABLE INPUT DELAY VALUE DELAY BUFFER DURATION Default Speed 4-bit PHY operating 3.3 V, 25 MHz 0x0 0x0 0x1 0x0 0x7 High Speed 4-bit PHY operating 3.3 V, 50 MHz 0x0 0x0 0x1 0x0 0x7 UHS-I SDR12 4-bit PHY operating 1.8 V, 25 MHz 0x1 0xF 0x1 0x0 0x7 UHS-I SDR25 4-bit PHY operating 1.8 V, 50 MHz 0x1 0xF 0x1 0x0 0x7 UHS-I SDR50 4-bit PHY operating 1.8 V, 100 MHz 0x1 0xC 0x1 Tuning 0x7 UHS-I DR50 4-bit PHY operating 1.8 V, 50 MHz 0x1 0x9 0x1 Tuning 0x7 UHS-I SDR104 4-bit PHY operating 1.8, V 200 MHz 0x1 0x6 0x1 Tuning 0x7 AM6442, AM6441, AM6421 AM6412, AM6411 SPRSP56 – JANUARY 2021 www.ti.com 178 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: AM6442 AM6441 AM6421 AM6412 AM6411 |
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