Datasheet

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Evaluating Performance with the ADCPro Software

8.1.2 Interrupts Tab

The second tab of the ADS7924EVM plug-in is the Interrupts tab. This tab corresponds primarily to the

Interrupt CONFIG Register of the ADS7924. A set of pushbuttons are used to control the bit selections

within this register. The Interrupts tab is shown in Figure 16.

Figure 16. Interrupts Tab

The BUSY/INT Select allows the user to generate an interrupt or a BUSY signal. The Edge/Level INT can

be programmed to either be level-triggered or edge-triggered. The INT Polarity can be set to be either

active low or active high. ALARM/ADC Data Ready is used to program the pin to generate an interrupt on

an alarm or as the ADC data are ready.

The User-programmed Counter (three bits) programs a count from 0 to 7. This function is a programmable

global alarm threshold to filter false alarms.

When the INT pin is programmed as the ADC data ready, the interrupt can be programmed to be

generated after a conversion is complete from any channel or after the last converted channel in scan

mode.

Delay on INT corresponds to a bit in the Sleep Control Register of the ADS7924. This bit controls whether

the conversions continue independently of alarms and the conversion overwrites previous data, or if future

conversions are stopped until the interrupt is cleared.

SBAU173–June 2010 ADS7924EVM and ADS7924EVM-PDK User's Guide