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參數(shù)資料
| 型號： | CYW2315X |
| 文件頁數(shù)： | 6/9頁 |
| 文件大?。?/td> | 217K |
| 代理商： | CYW2315X |
CYW2315
6
Timing Waveforms
Phase Characteristics
Phase Detector Output Waveform
D
O
Charge Pump Output Current Waveform
VCO Input Voltage
Phase Comparator Sense
VCO
Output
Frequency
(2)
(1)
For normal operation, the FC pins is used to select the output polarity of
the phase detector. Both the internal and any external charge pump are
affected.
Depending upon VCO characteristics, FC pin should be set accordingly:
When VCO characteristics are like (1), FC should be set HIGH or OPEN
CIRCUIT:
When VCO characteristics are like (2), FC should be set LOW.
When FC is set HIGH or OPEN CIRCUIT, F
out
pin is set to the reference
divider output, F
r
. When FC is set LOW, F
out
pin is set to the programmable
divider output F
p
.
tw
tw
F
R
F
P
LD
tw
tw
F
R
F
P
ID
O
Three-state
D
o
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