mmc card 32gb

broadcast bcr:broadcast with response responsive broadcast ac:address (point-to-point) command: Point-to-point, DATA0 No data adtc:adress (point-to-point) data Transfer Commands Point-to-point, data0~data3 data line data cmd0 on ~DATA3 cable , CMD2, CMD3, CMD55, ACMD41 commands may cause the status of the card to change response type: R1,R1B, R2, R3,R6 (SD2.0 expanded R7) extended content: 　　SPI operating mode: To know the characteristics: only one

: Bc:broadcast without Response unresponsive broadcast bcr:broadcast with Response responsive broadcast ac:address (p Oint-to-point) Command: Point-to-point, data0~data3 data-Line no data adtc:adress (point-to-point) Transfer Commands Point-to-point, data0~ Data on the DATA3 data line CMD0, CMD2, CMD3, CMD55, ACMD41 commands may cause the status of the card to change response type: R1,R1B, R2, R3,R6 (SD2.0 expanded R7) extended content: SPI operating

: Bc:broadcast without Response unresponsive broadcast bcr:broadcast with Response responsive broadcast ac:address (p Oint-to-point) Command: Point-to-point, data0~data3 data-Line no data adtc:adress (point-to-point) Transfer Commands Point-to-point, data0~ Data on the DATA3 data line CMD0, CMD2, CMD3, CMD55, ACMD41 commands may cause the status of the card to change response type: R1,R1B, R2, R3,R6 (SD2.0 expanded R7) extended content: SPI operating

1. Basic Knowledge: 1. Basic Structure of the Linux Device Driver. 2. the basic architecture of block Device Drivers (I believe that sbull people who have studied ldd3 should not be able to solve the problem. If it is just a bit of a horse, you have to make up for it.) 3. linux Device Driver Model. 2. Driver Analysis first, to clarify the files we need to analyze. The following files are from the linux-2.6.24 source code, we focus on the analysis of the basic architecture of the driver, so the d

MMC card briefing 1. MMC card registersCID 128bit mandatory RCA 16bit mandatory DSR 16bit optional CSD 128bit mandatory OCR 32bit mandatory 2. Register descriptionOCR-operation conditions register stores the VDD voltage profile of the card, read only CID-