38.3.3.6 Oscillator Tolerance

The oscillator tolerance, df, around the nominal frequency of the oscillator, fnom, is defined in Equation 38-11.

Equation 38-12 through Equation 38-16 describe the conditions for the maximum tolerance of the oscillator.

Equation 38-11. Oscillator Tolerance

$(1 - d f) \times f n o m \leq F_{S Y S C L K} \leq (1 + d f) \times f n o m$

Equation 38-12. Condition 1

$d f \leq \frac{N S J W}{2 \times 10 \times \frac{N B T}{N T Q}}$

Equation 38-13. Condition 2

$d f \leq \frac{\min (N P H S E G 1, N P H S E G 2)}{2 \times (13 \times \frac{N B T}{N T Q} - N P H S E G 2)}$

Equation 38-14. Condition 3

$d f \leq \frac{D S J W}{2 \times 10 \times \frac{D B T}{D T Q}}$

Equation 38-15. Condition 4

$d f \leq \frac{\min (N P H S E G 1, N P H S E G 2)}{2 \times ((6 \times \frac{D B T}{D T Q} - D P H S E G 2) \times \frac{D B R P}{N B R P} + 7 \times \frac{N B T}{N T Q})}$

Equation 38-16. Condition 5

$d f \leq \frac{D S J W - \max (0, (\frac{N B R P}{D B R P} - 1))}{2 \times ((2 \times \frac{N B T}{N T Q} \times H N S E G P 2) \times \frac{N B R P}{D B R P} + D P H S E G 2 + 4 \times \frac{D B T}{D T Q})}$