str755fvx STMicroelectronics, str755fvx Datasheet - Page 47

• Manufacturer Part Number: str755fvx
• Description: Arm7tdmi-s, 32-bit Mcu With Flash, Smi, 3 Std 16-bit Timers Pwm Timer, Fast 10-bit Adc, I2c, Uart, Ssp, Usb And Can
• Manufacturer: STMicroelectronics

STR750F
G
Figure 23. Self-referred jitter (single and long term)
Figure 24. Cycle-to-cycle jitter
difference between N+1 consecutive clock rising edges and T
difference between N+1 consecutive clock rising edges.
N should be kept sufficiently large to have a long term jitter (ex: thousands).
For N=1, this becomes the single period jitter.
See
Cycle-to-cycle jitter (N period jitter)
This corresponds to the time variation between adjacent cycles over a random sample
of adjacent clock cycles pairs. Jitter(cycle-to-cycle) = Max(Tcycle n- Tcycle n-1) for n=1
to N.
See
Figure 23
Figure 24
CK_PLL
ACTUAL
CK_PLL
IDEAL
CK_PLL
CK_PLL
ACTUAL
IDEAL
trigger point
n
n
T
T
Tcycle 1
single period
jitter
n+1
n+1
Tcycle 2
n+2
---
---
long term
jitter
min
Tcycle N-1
n+N
Electrical parameters
is the minimum time
n+N
47/71