Manual

AN366

20 AN366REV2

6.1 Normal Operation Flow Diagram Using the CDB5484

The following flow diagram shows the implementation of normal flow executed in the field. The CDB5484U is

used to load calibration constants obtained during the factory calibration. Obviously, the GUI is not used during

actual execution, but it provides an excellent debugger for customer flow evaluation and modifications. The one-

time factory calibration and compensation flows are discussed after the normal flow. The MTE Meter Test Equip-

ment source is used to provide the source voltage and load current, but it is only required during this flow to

simulate different loading conditions. Each step of the flow shows the CDB5484U GUI screen capture of execu-

tion and reading results. The register writes and reads are all identified for easy comparison to the GUI screen.

POWER UP

Power up CDB5484U per data sheet using terminals J36 and J37.

RESET

SDI = 0xC1 Reset CS5484 software Reset

RESTORE FILTER CONFIGURATION

(See Figure 14.)

Config 2 Register

SDI = 0x90 0x40 0x0602AA Write Register Config2 to enable HPFs

SDO = 0xFF 0xFF 0xFFFFFF (Page 16, Register 0)

SDI = 0x90 0x00 0xFFFFFF Read Register Config2 to enable HPFs

SDO = 0xFF 0xFF 0x0602AA (Page 16, Register 0)

Figure 14. Setup Window

POWER UP

From NVM

RESTORE

FILTER

CONFIGURATION

RESET