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发表于: 2018-10-1 17:42:45
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Hi.
I have attached a schematic pdf with markings on the important points for a successful read and write. Keep your RT809H fly-leads at 10 centimeters length or less. connect both ends of the main crystal (in & out ) to ground .3 Crucial points-(CLK , CMD & D0 ). In most cases the CLK - has a missing chip-capacitor , CMD - always close to clock & D0 - one of the resistors 6-8 resistors lined up around the NAND chip. This is just general.
It is best to obtain service manuals for the set you are doing though its not always easy(some set makers now only give block diagrams ). I can see another Master helped you with Nandchip pin out , thats great help too.
Please search for more emmc tutorials on this site, read from other Masters's Experiences from iFix. you will come right. You can post a photo on the board you are doing, i am sure you will get a lot of masters to help with the points.
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