MITO 8M Nano SOM/MITO 8M Nano Hardware/Peripherals/I2C
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| 2020/12/29 | First release | ||
Peripheral I2C[edit | edit source]
I2C is a two-wire, bidirectional serial bus that provides a simple, efficient method of data exchange, minimizing the interconnection between devices.
This bus is suitable for applications requiring occasional communications over a short distance between many devices.
Description[edit | edit source]
The three I2C interface available on MITO 8M Mini/Nano is based on iMX8M Mini/Nano SoC and it is designed to be compatible with the PhilipsTM I2C bus protocol.
The iMX8M Mini/Nano SOC has four I2C bus interfaces, but there is some limitation about:
- The I2C1 bus is internally used for PMIC and MIPI to LVDS bridge and it is not externally available
See Pin mapping tables for connection details.
Features[edit | edit source]
The I2C port supports the following standards and features:
- Compatibility with I2C bus standard
- Standard mode (100 kbits/s) and Fast mode (400 kbits/s) can be achieved
- Multimaster operation
- Software programmability for one of 64 different serial clock frequencies
- Software-selectable acknowledge bit
- Interrupt-driven, byte-by-byte data transfer
- Arbitration-lost interrupt with automatic mode switching from master to slave
- Calling address identification interrupt
- Start and stop signal generation/detection
- Repeated Start signal generation
- Acknowledge bit generation/detection
- Bus-busy detection
Pin mapping[edit | edit source]
The Pin mapping is described in the Pinout table section
