There are total seven Register in the eMMC device， which are OCR， CID， CSD， Ext_CSD， RCA， DSR and QSR. Most of them we have already cover in the separated topics. Here we only have a summary of them one by one.
tBA maximum 50ms and tBD maximum 1s are mentioned already in the Boot topic. tBA means the time of Boot Answering to send back 5-bit boot acknowledge， tBD means the first prepare time needed for Boot Data out.
本方法已经发布视频教程，如果想看视频版本请点击以下链接盒子刷Volumio数播的最简单方法-示例N1盒子目前我们能找到的音乐数播系统，能免费使用的主要有daphile达菲和Volumio两个系统，其中达菲仅有X86版本，而Volumio除了有X86版本还有ARM版本，官方版本只适
