====== 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__.