Cirrus Logic CDB5484U - Manual (Page 23)

CDB5484U
DS919DB5 23
2.5.1.1 Refresh Screen Button
Clicking the Refresh Screen button will update the contents of the screen by reading all the register values
from the CS5484. It is recommended to click the Refresh Screen button when entering the Setup Window,
or after modifying any registers, to reflect the current status of the CS5484.
2.5.1.2 Reset DUT Button
Clicking the Reset DUT button will software-reset the CS5484. The CS5484 will perform a software-reset,
as discussed in the CS5484 data sheet. After the software-reset, the screen contents will be automatically
refreshed with the updated status of the CS5484.
2.5.1.3 Save Config and Load Config Buttons
Clicking the Save Config button will save the current setup widow's configuration to a .txt file. Clicking the
Load Config button will recall a saved configuration and store values into the CS5484.
2.5.1.4 CS5484 MCLK Frequency
The CS5484 accepts a wide range of MCLK input frequencies and can therefore run at many different
sample rates. The frequency being used on the CS5484 should be entered in this box to provide accurate
frequency calculation in the FFT window. This will also help the software decide which functions the eval-
uation system can perform reliably.
2.5.1.5 Configuration Registers
In the Config0, Config1, and Config2 register boxes, the contents of the CS5484's configuration registers
can be modified by typing a hexadecimal value in the HEX field, or by changing any of the values below
the HEX field to the desired settings. Although the CDB5484U software allows the user to modify any of
the bits in the configuration registers, changing certain reserved bits, such as the NO_OSC bit of Config0,
may cause the software and board to behave erratically. This applies only to the CDB5484U evaluation
system, and not to the CS5484 chip itself.
2.5.1.6 Pulse Control Register
The Pulse Control Register section is used to make changes to, and display the contents of, the CS5484's
PulseCtrl register. The PulseCtrl register contains various bits used to select the input to each energy
pulse generation block within the CS5484. Refer to the CS5484 data sheet for descriptions of the bits.
The value of the PulseCtrl register is displayed in hexadecimal format. Most of the PulseCtrl register bits
are reserved or unused. Only the usable bits are displayed in the Setup Window.
2.5.1.7 Pulse Width and Pulse Rate Registers
The Pulse Width Register section is used to make changes to and display the contents of the CS5484's
PulseWidth register. The PulseWidth register is used to define the frequency range and pulse width of the
energy pulses generated by the CS5484. The PulseWidth register should be configured before setting the
PulseRate register. The Pulse Rate Register section is used to make changes to and display the contents
of the CS5484's PulseRate register. The PulseRate register defines the full-scale frequency of the energy
pulses generated by the CS5484.