Hardware Libraries
20.1
Arria 10 SoC Hardware Manager
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The I2C protocol specification requires 300ns of hold time on the SDA signal in standard and fast speed modes. Board delays on the SCL and SDA signals can mean that the hold-time requirement is met at the I2C master, but not at the I2C slave (or vice-versa). Because each system may encounter differing board signal delays, the I2C controller provides the capability to adjust of the SDA hold-time.
The functions in this section provide software configuration of SDA hold time for the I2C controller.