Description: MMC卡接口标准官方文档，用来做软件开发或者硬件实现不错的参考书。-MMC card interface standard official document, to do software development or hardware to achieve a good reference book. Platform: |
Size: 852992 |
Author:Nee |
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Description: MMC卡规范协议（英)完整版,包括MFG COMPLIANCE,SPEC,MMCA030915-Taipei三类文档,为pdf格式.-MMC card specification Agreement (English) full version, including MFG COMPLIANCE, SPEC, MMCA030915-Taipei three types of documents, as pdf format. Platform: |
Size: 2244608 |
Author:华关冰 |
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Description: SD,MMC卡规范,V1.0. 由SD group 发布,对于SD卡接口开发很有帮助-SD, MMC card specification, V1.0. Published by the SD group, for the development of useful SD card interface Platform: |
Size: 972800 |
Author:常江 |
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Description: MMCSDTimming MMC卡的时序图，比起SD规范又臭又长的文档，要简洁的多了。SD卡也可以以此作为参考-MMCSDTimming MMC card timing diagram, compared to SD specification also documents a long foul, it is necessary to more concise. SD card can also be used as a reference Platform: |
Size: 15360 |
Author:Chris |
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Description: PXA27x的MMC/SD IO控制器在访问PXA27x处理器的软件与MMC存储堆和支持MMC、SD及SDIO通信协议之间充当联结作用。PXA27x的MMC控制器协议规范遵守多媒体卡系统规范V3.2（MultiMediaCard System Specification Version 3.2)；SD控制器支持一个基于SD存储卡规范V1.01（SD Memory Card Specification Version 1.01）SD卡或基于SDIO卡规范V1.0( SDIO Card pecification Version 1.0)。MMC/SD/SDIO控制器采用标准的MMC传输协议或串行通信接口SPI协议模式。访问PXA27x的软件使用MMC传输协议或SPI模式作为与MMC控制器通信的协议。-PXA27x the MMC/SD/SDIO controller in the PXA27x processor to access the software and MMC memory heap and support MMC, SD and SDIO act as a link between the role of communication protocols. PXA27x MMC controller protocol specification to comply with the Multimedia Card System Specification V3.2 (MultiMediaCard System Specification Version 3.2) SD controller supports an SD memory card standard based on V1.01 (SD Memory Card Specification Version 1.01) SD card or SDIO card based on Specification V1.0 (SDIO Card pecification Version 1.0). MMC/SD/SDIO MMC controller in a standard transmission protocol or serial communication interface SPI protocol mode. Software used to access PXA27x MMC or SPI mode of transport protocol as communication protocol with the MMC controller. Platform: |
Size: 12288 |
Author:sxf |
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Description: Normal MMC operates under 20 MHz and can operate 1 bit data, but High Speed MMC
can operate from 0 to 52 MHz. Also it can operate 1 bit to 8 bit data
Even though High Speed mode setting is defined in MMC specification 4.x, most
application manufactures are violating High Speed mode setting sequence.
Default HS_TIMING is 0. If you want to use High Speed MMC, you must change the
default HS_TIMING to 1.
If the HS_TIMING registry is not modified, then it is possible for the card to operate
abnormally due to the lack of timing margin.
Therefore, Samsung recommends following guideline for High speed mode setting
sequence to manufactures for preventing compatibility failure. Platform: |
Size: 428032 |
Author:simplejopa |
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