The Registers tab interacts with the ScratchPad-1 registers within the TMP1827 device.

The Auto Read drop-down menu configures polling of register contents. When Auto Read is off, it is necessary to click Read Register to fetch the contents of the current register. The Read All Registers button can be used to fetch the contents of all registers at once. The Write Register button is greyed and disabled when the drop-down menu next to the button is set to Immediate. Immediate mode triggers a write operation each time a register is modified. When Deferred mode is selected, the Write Register button is enabled, and write operations will not be performed unless the Write Register button is clicked. These settings give the user total control over bus activity, and enable individual transactions to be easily observed with an oscilloscope, logic analyzer, or bus-sniffing device.

Figure 4-3 Registers.