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楼主 # 2022-04-16 20:38:45

jagrutvaghela@vegg.co.in
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注册时间: 2022-03-22
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allwinner D1-H ,anyone please help me with eMMC schematic connection?

hello,

i am new to this high speed , multicore, risc-V , DDR, eMMC design.

i am working on a project in which i want to use eMMC instead of SD card for booting and as memory, and in reference design of Allwinner D1 there is no eMMC used.

generally i have seen eMMC are 8 bit D0 - D7 and one clk signal, but as per the datasheet and reference manual of Allwinner-D1 it only supports 4bit eMMC5.0. so i am not getting how to use 8 bit emmc with D1.

anyone who is experienced please help me out,

Thanks and Regards,
Jagrutkumar Vaghela

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楼主 #2 2022-04-16 21:37:43

jagrutvaghela@vegg.co.in
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Re: allwinner D1-H ,anyone please help me with eMMC schematic connection?

can you suggest any specific emmc5.0 part? 4 bit, which can work with D1.

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楼主 #5 2022-04-22 13:09:41

jagrutvaghela@vegg.co.in
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Re: allwinner D1-H ,anyone please help me with eMMC schematic connection?

哇酷小二 说:

D1 支持 eMMC的 4bit/1bit 模式,像 4bit/1bit TF卡一样的使用。

so you mean i can use emmc part with the connection of TF-Card pins, instead of TF card there will be eMMC?

or there is mentioned in datasheet and reference manual the SDC-2 port pins which i think is eMMC pins port, so this one last question which pins of D1 i can use to connect eMMC? as per you TF Card pins (PF0 to PF6), or as per datasheet or reference manual (PC2 to PC7 - SPI0)?

also a 16MB flash i can use for boot loader at spi1?

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