Evaluation Board
User Guide
Rev. A | Page 8 of 14
EVALUATION BOARD SOFTWARE COMPONENTS
FULL CONTROLWINDOW
Figure8.Evaluation Software Control Window
The
Control
window provides control of the internal PLL,
parallel port, auxiliary functions, I/O control, power down
functions, OSK, clock calibration and multichip sync function
of the AD9915 (see Figure 8).
Setting the Internal PLL
The
PLL
section allows you to enable the internal PLL of
AD9915.
PLL enable
is used to activate internal PLL of AD9915. The
default setting of this box is disabled (check box cleared),
indicating that the internal PLL is bypassed and the reference
clock input is the system clock. Once
PLL enable
box is
checked, the
Multiplier
option and the
PLL Cal Enable
button
are activated, as well as all other options in the PLL section.
If using internal PLL, the external clock input and the
multiplier must be within the range defined in AD9915
datasheet. Refer to AC Specifications Table of the datasheet.
