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MT8735参考设计资料

IT生活 作者:SZX511 时间:2018-09-25 15:27:16 0 删除 编辑

MT8735_83 Design Notice


原文内容:


MT 8735平台框图:


MT8735 Ball Map

I2C Application:

• MT8735 integrates 4-I2C controllers: I2C0, I2C1, I2C2 and I2C3

-I2C0 supports only one I2C interface (1 dedicate , No mux onto other pins)

-I2C1 supports three I2C mux interface (1 dedicate , 2 mux onto other pins)

-I2C2 supports three I2C mux interface (1 dedicate , 2 mux onto other pins)

-I2C3 supports three I2C mux interface (1 dedicate , 2 mux onto other pins)

Design Notice – I2C Application (2/3)

External pull-up resistor requirement:

   [MUST] add pull-up resistor for open-drain I2C; 4.7K is recommended.

  [Optional] based on your system design, reserve NC pull-up resistor at other muxed I2C

• MT8735' I2Cs are Open-Drain IO type, you need to add a external pull-up resister 

when it is used as following application from I2C0~3 Pad

  GPIO47~54

 IDDIG from I2C3 Pad

 MD_EINT from I2C3 Pad

 c2k_uim_hot_plug_in from I2C3 Pad

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来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/31529038/viewspace-2214811/,如需转载,请注明出处,否则将追究法律责任。

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