Zynq UltraScale+ Devices Register Reference > Module Summary > RTC Module > CALIB_READ (RTC) Register
Register Name | CALIB_READ |
---|---|
Relative Address | 0x000000000C |
Absolute Address | 0x00FFA6000C (RTC) |
Width | 21 |
Type | roRead-only |
Reset Value | 0x00000000 |
Description | Read-back Calibration Value. |
This register reads back the calibration value that was programmed in the RTC
Field Name | Bits | Type | Reset Value | Description |
---|---|---|---|---|
Fraction_En | 20 | roRead-only | 0x0 | This bit can be used to check if the fractional compensation feature was enabled. |
Fraction_Data | 19:16 | roRead-only | 0x0 | Number of cycles at which the RTC gets one clock cycle ahead of the real time due to the cumulative fractional inaccuracy of the Oscillator. |
Max_Tick | 15:0 | roRead-only | 0x0 | Register value multiplied by the period of the oscillator should equal to 1 second. |