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TMS570LS3137: ADC Module Freeze Capability

li qunxiong
Intellectual 335 points
Part Number: TMS570LS3137

Hello,

If event group and group1 enable freeze capability,group2 unenable freeze capability.First,trigger event group's continuous conversion,event group will star continuous conversion.Then trigger group1's continuous conversion,group1 will freeze ongoing event group conversions,and group1 will start continuous conversion.Last,trigger group2's single conversion,group2 will freeze ongoing group1 conversions,and start group2's single conversion,when group2's conversions are completed,event group conversions start from where they were frozen.

Is this process correct?

Thanks.

  • 0
    TI__Guru**** 197126 points

    When the freeze bit is set for a group, the frozen group allows another group conversion request to interrupt the active (frozen) group.

    If two group conversion requests are active, then the priority dictates which group is converted first. However, if the group that wins the priority contention is freeze enabled, it begins its conversion and is interrupted by the second group before any channels are converted. Thus, the group with lower priority is converted before the higher priority, freeze-enabled group.

    so the sequence in your post is correct.