Cirrus Logic CDB5484U - Manual (Page 25)

CDB5484U
DS919DB5 25
2.5.1.16 V1/V2 Sag, V1/ V2 Swell, and I1/I2 Overcurrent Registers
The registers for voltage sag, voltage swell, and overcurrent are displayed in the V1 Sag, V2 Sag, V1
Swell, V2 Swell, I1 Overcurrent, and I2 Overcurrent Register sections. These sections display the level
and duration values of the corresponding registers in both hexadecimal and decimal format. Each register
can be modified by typing a value in the corresponding decimal or HEX field. Refer to the CS5484 data
sheet for detailed descriptions of these registers.
2.5.1.17 Register Checksum, SerialCtrl Registers
The Register Checksum and SerialCtrl Register boxes provide control and status of critical serial port
communication parameters and the register checksum. The SerialCtrl Register section provides control
over RX pin, baud rate, and enabling checksum protection for serial communication. The Register Check-
sum section provides the calculated checksum of the critical registers inside the CS5484. The register
checksum updates automatically after single or continuous conversion has been performed. The RegChk
and SerialCtrl registers are displayed in hexadecimal form. Note that if the opto-couplers are selected as
the isolation (J18, J20), the maximum baud rate is 2400.
The baud rate field applies only to UART serial communication and can be changed by the pull-down field.
It is recommended to set the baud rate to the highest setting possible. The default setting of 600 baud will
cause some GUI functions to overflow the communication buffer and not function correctly.
2.6 Calibration Window
The Calibration Window is used to display and write to the CS5484 offset and gain calibration registers.
The user is also able to initiate the CS5484's calibration sequences that are used to set the calibration
values. AC offset, DC offset, and gain calibrations can be performed on the voltage channel, the current
channel, or both simultaneously. The user should refer to the CS5484 data sheet for more details on cal-
ibration (see Figure 20).
Figure 20. Calibration Window