sm5160c Nippon Precision Circuits Inc, (NPC), sm5160c Datasheet - Page 6

• Manufacturer Part Number: sm5160c
• Description: Programable Pll Frequency Synthesizer
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

Serial data input timing
read on the rising edge of CLK. The state on DATA
should be changed in sync with the falling edge of CLK.
shift register. When LE goes HIGH, data is transferred
from the shift register to one of the frequency divider
latches.
Serial data input timing is shown in figure 5. Data is
LE should be LOW while data is being written to the
DATA
CLK
LE
MSB
1
2
3
4
5
Figure 5. Serial data input
SM5160CM/DM
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7
8
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Stand-by mode
VDD2 to 0V while the device is operation.
N/R counter are stopped. As long as voltage is provide to
VDD3, data written in latch is kept. Exit from this mode
to normal operation, therefore, is made by providing volt-
age to VDD1, VDD2. In this mode, input to FIN must
be done AC coupling, input to XIN must be done AC
coupling or by crystal oscillator. In this mode, DOA,
DOP should be in state of floating.
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The stand-by mode is entered by setting VDD1,
In the stand-by mode, the amplifiers of XIN, FIN and
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12
13
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NIPPON PRECISION CIRCUITS-6
15
LSB
16
CONTROL
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