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
到一牛网论坛下载更多技术资料。http://bbs.16rd.com/thread-270545-1-1.html
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/31529038/viewspace-2214811/ ，如需转载，请注明出处，否则将追究法律责任。
