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L64734 датащи(PDF) 21 Page - LSI Computer Systems

номер детали L64734
подробное описание детали  Tuner and Satellite Receiver Chipset
PDF  48 Pages
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производитель  LSI [LSI Computer Systems]
домашняя страница  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

L64734 датащи(HTML) 21 Page - LSI Computer Systems

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L64733/L64734 Tuner and Satellite Receiver Chipset
21
Tuner Control Interface
The Tuner Control interface contains signals that control the L64733
Tuner IC.
FLCLK
Filter Control Clock
Output
FLCLK is the output of a programmable integer value
divider clocked by the demodulator sampling clock,
PCLK. The division ratio can be programmed with
register bits. The frequency of FLCLK multiplied by 16 is
the 3 dB cutoff of the programmable low-pass filters on
the L64733.
INSEL
RF Input Select
Output
When INSEL is asserted, the L64733 tuner selects the
normal mode. When INSEL is deasserted, the L64733
selects the Loop-Through mode.
Typical Operating Circuit
Figure 7 is a diagram of a typical operating circuit for the chipset,
including external components. Not all external components are shown.
See the
L64733/34 Evaluation Board User’s Guide for complete
schematic details.



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