====== Features ====== Table 1. eMMC feature table ^ Feature ^ Description ^ V4.1 ^ V5.1 ^ Addend ^ | Byte Addressing | | {{fa>check-circle?color=green}} | {{fa>check-circle?color=green}} | [[#emmc_addressing_mode|{{mdi>note-text}}]] | | Sector Addressing | | - | {{fa>check-circle?color=green}} | [[#emmc_addressing_mode|{{mdi>note-text}}]] | | Command Queuing | | - | {{fa>check-circle?color=green}} | | Table 2. eMMC Bus Speed Modes ^ Mode ^ Data Rate ^ I/O Valtage (V) ^ Bus Width ^ Frequency (MHz) ^ Max Data Transfer (MB/s) ^ | Legacy | Single | 3, 1.8, 1.2 | 1, 4, 8 | [0, 26] | 26 | | High Speed SDR | Single | 3, 1.8, 1.2 | 1, 4, 8 | [0, 52] | 52 | | High Speed DDR | Dual | 3, 1.8, 1.2 | 4, 8 | [0, 52] | 104 | | HS200 | Single | 1.8, 1.2 | 4, 8 | [0, 200] | 200 | | HS400 | Dual | 1.8, 1.2 | 8 | [0, 200] | 400 | ==== eMMC Addressing Mode ==== eMMC Spec defines two addressing modes: * Byte addressing * Sector addressing To determine the addressing mode, the host should should __read bit [30:29] in the OCR register__.