Module rp2040_pac::i2c0::ic_fs_spklen

I2C SS, FS or FM+ spike suppression limit

This register is used to store the duration, measured in ic_clk cycles, of the longest spike that is filtered out by the spike suppression logic when the component is operating in SS, FS or FM+ modes. The relevant I2C requirement is tSP (table 4) as detailed in the I2C Bus Specification. This register must be programmed with a minimum value of 1.

Structs

• IC_FS_SPKLEN_SPEC
  I2C SS, FS or FM+ spike suppression limit

Type Aliases

• IC_FS_SPKLEN_R
  Field IC_FS_SPKLEN reader - This register must be set before any I2C bus transaction can take place to ensure stable operation. This register sets the duration, measured in ic_clk cycles, of the longest spike in the SCL or SDA lines that will be filtered out by the spike suppression logic. This register can be written only when the I2C interface is disabled which corresponds to the IC_ENABLE[0] register being set to 0. Writes at other times have no effect. The minimum valid value is 1; hardware prevents values less than this being written, and if attempted results in 1 being set. or more information, refer to ‘Spike Suppression’.
• IC_FS_SPKLEN_W
  Field IC_FS_SPKLEN writer - This register must be set before any I2C bus transaction can take place to ensure stable operation. This register sets the duration, measured in ic_clk cycles, of the longest spike in the SCL or SDA lines that will be filtered out by the spike suppression logic. This register can be written only when the I2C interface is disabled which corresponds to the IC_ENABLE[0] register being set to 0. Writes at other times have no effect. The minimum valid value is 1; hardware prevents values less than this being written, and if attempted results in 1 being set. or more information, refer to ‘Spike Suppression’.
• R
  Register IC_FS_SPKLEN reader
• W
  Register IC_FS_SPKLEN writer