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Figure 7 AD9142A-M5372 Eval Board output Spectrum
SPI SOFTWARE
The AD9142A SPI software is conveniently organized in a series of tabs that groups registers
according to their functions. In this way, all registers associated with the digital functions, for example,
are on the “Digital Functions” tab. All registers associated with the PLL are on the “PLL” tab, and so
on. Normally the “Quick Start” tab is sufficient for a quick evaluation. The most frequently used
register controls are included on this tab. A full description of each register and its settings is given in
the AD9142A data sheet. Some of the registers and their functions are described here as they pertain
to the AD9142A evaluation board. Please note that some of the screen images in this document may
not match exactly with the latest revision of the software, due to ongoing improvements and
enhancements to the software.
The full screen layout is shown in Figure 5. The tabs can be seen across the top of the work area, and
four function buttons in the menu area. “Save Registers to File” and “Restore Registers from File”
allow the user to save the current register settings into a file for later uses. A register is immediately
updated when the value in the control is changed. Switching between tabs does not update register
values. “Read All Registers” can be used to monitor a resister with changing readback values. “
Record Sequence” allows the user to record a series of SPI writes in a particular order and to play
back the sequence later. A short description of the register is shown in the status bar on the bottom
of the work area when the mouse curser hovers over the control. Some of the tabs are discussed
below.
Summary of Contents for AD9142A-M5372-EBZ
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