Pll400 Example - Infineon XMC7000 Quick Start Manual

XMC7000: Setting the Clock Supervision (CSV) parameters
CSV calculator examples
The CSV calculator calculates the CSV register values based on the entered parameters and automatically
displays the values shown in the column highlighted in green in
Table 5 Output parameters
Parameters
Upper limit value for UPPER register
Lower limit value for LOWER register
Period value for PERIOD register
Startup delay value for STARTUP
register
3.2

PLL400 example

An example of the PLL400 CSV calculator is demonstrated in this section with the following parameters:
Reference clock frequency: 8 MHz (ECO)
•
Reference clock tolerance: 1 % (ECO)
•
Target: 400 (use twice the value of the calculated minimum target)
•
Monitored clock frequency: 200 MHz (CSV_HF1/PLL400 with SSCG)
•
Monitored clock tolerance: 5 % (CSV_HF1/PLL400 with SSCG)
•
Monitored clock tolerance (modulation depth): 3 %
•
Startup time for Monitored clock: 50 ���� (PLL400)
•
In the CSV calculator, enter the values given in cells highlighted in orange in Table 6
Table 6 Input parameters
Parameters
Reference clock frequency
Reference clock tolerance
Minimum target (calculated reference clock count)
Target (reference clock count for user definition)
Monitored clock frequency
Monitored clock tolerance
Application note
Table
Value Unit Remarks
Cycles Maximum: 255 (Only for CSV_ILO/LF/BAK)
208
Maximum: 65535 (Others)
Cycles Maximum: 255 (Only for CSV_ILO/LF/BAK)
192
Maximum: 65535 (Others)
1250 Cycles Minimum: 0
Maximum: 255 (Only for CSV_ILO/LF/BAK)
Maximum: 65535 (Others)
283 Cycles Maximum: 255 (Only for CSV_ILO/LF)
Maximum: 65535 (Others)
Value Unit
8000000 Hz
1 %
200 Cycles
400 Cycles
200000000 Hz
5 %
9
5.
Remarks
Nominal source clock
frequency
ILO: 32768 (SID320)
IMO: 8000000 (SID310)
ILO: SID320
IMO: SID310
≥ Minimum target
Nominal frequency
≥ Reference clock tolerance
(SID310/SID320)
Minimum: 3 (when the
monitored clock is
002-34390 Rev. *A
2023-06-05