参数资料
型号: MPC93R51FAR2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 时钟及定时
英文描述: 93R SERIES, PLL BASED CLOCK DRIVER, 9 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32
封装: 7 X 7 MM, PLASTIC, LQFP-32
文件页数: 9/9页
文件大小: 336K
代理商: MPC93R51FAR2
MPC93R51
MOTOROLA ADVANCED CLOCK DRIVERS DEVICE DATA
138
Figure 11. Propagation delay (tPD, static phase
offset) test reference
Figure 12. Propagation delay (tPD) test reference
Figure 13. Output Duty Cycle (DC)
Figure 14. Output–to–output Skew tSK(O)
The pin-to-pin skew is defined as the worst case difference in
propagation delay between any similar delay path within a
single device
The time from the PLL controlled edge to the non controlled
edge, divided by the time between PLL controlled edges,
expressed as a percentage
VCC
VCCB2
GND
VCC
VCCB2
GND
tSK(O)
VCC
VCCB2
GND
tP
T0
DC = tP/T0 x 100%
VCC
VCCB2
GND
VCC
VCCB2
GND
t()
TCLK
Ext_FB
VCC
VCCB2
GND
t()
PCLK
Ext_FB
PCLK
VCMR
Figure 15. Cycle–to–cycle Jitter
Figure 16. Period Jitter
The variation in cycle time of a signal between adjacent cycles, over a
random sample of adjacent cycle pairs
The deviation in cycle time of a signal with respect to the ideal period over
a random sample of cycles
TN
TJIT(CC) = |TN-TN+1|
TN+1
TJIT(P) = |TN-1/f0|
T0
tF
tR
VCC=3.3V
2.4
0.55
Figure 17. I/O Jitter
Figure 18. Transition Time Test Reference
TJIT() = |T0-T1mean|
TCLK
Ext_FB
The deviation in t0 for a controlled edge with respect to a t0 mean in a
random sample of cycles
(PCLK)
2
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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