Cirrus Logic CDB5463U - Manual (Page 13)

CDB5463U
DS805DB2 13
2.4.1 Refresh Screen Button
The Refresh Screen button will update the contents of the screen by reading all the register values from
the CS5463. It is a good idea to press the Refresh Screen button when entering the Setup window, or
after modifying any registers, to reflect the current status of the CS5463.
2.4.2 Reset DUT Button
The Reset DUT button will hardware reset the CS5463. The CS5463 will perform a reset as discussed in
the CS5463 data sheet. After the hardware reset to the CS5463 device, the screen contents will be auto-
matically refreshed with the updated status of the CS5463.
2.4.3 CS5463 Crystal Frequency
The CS5463 accepts a wide range of crystal input frequencies, and can therefore run at many different
sample rates. The crystal frequency being used on the CS5463 should be entered in this field to provide
accurate frequency calculation in the FFT window. This will also help the software decide which functions
the evaluation system can perform reliably.
2.4.4 Configuration Register
In the Configuration Register box, the contents of the Config register can be modified by typing a hexa-
decimal value in the HEX: field, or by changing any of the values below the HEX: field to the desired set-
tings. Although the CDB5463U software allows the user to modify any of the bits in the Config register,
changing certain bits may cause the software and board to behave erratically. For the evaluation system
to function properly, the Interrupt Output field should be set to the default Active Low. This applies only to
the CDB5463U evaluation system, and not to the CS5463 chip itself.
2.4.5 Temperature, Voltage SAG, Current Fault Registers
These fields display the values of the corresponding registers in both hexadecimal and decimal format.
Each register can be modified by typing a value in the corresponding offset, level, duration, or gain value
field (decimal) or HEX: field (hexadecimal).
2.4.6 Mask Register / Status Register
The Mask Register / Status Register box displays the values for these registers in hexadecimal and de-
codes them to indicate each bit's function. The Mask register can be modified by typing a value in the
HEX: field, or by checking the appropriate check boxes for the bits that are to be masked. The Status reg-
ister cannot be directly modified. It can only be reset by pressing the Clear Status Register button. The
HEX: field for this register and the lamps are indicators only. A lamp which is on means that the corre-
sponding bit in the Status register is set (except the Invalid Command bit, which is inverted). The value
present in the Mask register may be changed by the software during certain operations to provide correct
functionality of the CDB5463U board.
2.4.7 Cycle Count / PulseRateE Register
These fields display the values of the corresponding registers in both hexadecimal and decimal format.
Each register can be modified by typing a value in the corresponding Value: or HEX: field.