Texas Instruments CDC7005, User Manual, Page: 20 / 37

Functional Description
4-2
4.1 Functional Description
Programming software is required for programming the internal control
register of the CDC7005 in the EVM. The software runs under Windows98, NT,
and 2000. A quick installation is required prior to use. See Section 4.2
Software
Installation .
There are several cases where programming is mandatory:
-
Using an active loop filter
-
Reference clock and VCXO clock do not have a ratio of 1:8.
-
Changing of divider ratio or disabling of certain LVPECL output
-
Changing of phase offset, (delay M/N)
-
Changing of charge pump output current
-
Widening the lock detect window
Figure 4 − 1. Screen View