Appendix B
PLL Divider Settings
and L64724/34
Connection
This appendix lists the PLL divider settings for typical applications. It also
describes the L64777 connection to the L64724 and contains the
following sections:
•
•
•
Section B.1, “Overview,” page B-1
Section B.2, “PLL Driver Settings for Typical Applications,” page B-2
Section B.3, “Connecting the L64777 to the LSI Logic L64724,”
page B-3
B.1 Overview
The QAM modulator is the last stage in a digital CATV transmitter
system. Figure B.1 shows a block diagram of a typical CATV transmitter.
Figure B.1 CATV Block Diagram
MPEG-2
Transport
Decoder
Video
Source
QAM
Modulator
Mixer
To CATV
Power
Amplifier
RF
Source
Satellite
Receiver
QAM
Modulator
To CATV
Mixer
Power
Amplifier
Antenna
RF
Source
L64777 DVB QAM Modulator Technical Manual
B-1
ETC [ ETC ]
