TPMC533 User Manual Issue 1.0.1
Page 95 of 107
7.2.2 Frame Mode
Frame Mode is used for generating repetitive frames of conversions triggered by a Frame Trigger at a
configurable Frame Trigger Rate. It can be used to synchronize ADC Frames and DAC Frames, for example.
Figure 7-3 : Frame Mode
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The Number of Conversions Registers of both, the ADC Sequencer and the DAC Sequencer, define
how many conversions are performed (per Frame) after a Frame Trigger occurs. This means ADCs
and DACs can perform a different Number of Conversions per Frame.
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The Conversion Clock 1 or Conversion Clock 2 Register defines the Conversion Rate
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The Frame Trigger Generator Register 1 defines the Frame Trigger Rate by either selecting
Conversion Clock 1 or Conversion Clock 2 for Frame Trigger creation and additionally defining how
many of the selected Conversions Clocks shall occur between two Frame Triggers
•
The Frame Trigger Generator Register 2 defines the number of Frame Triggers that shall be
generated
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The Conversion Signals Generator Enable Register starts the creation of Frame Triggers and
Conversion Clocks
Alternatively, the Frame Trigger and the Conversion Clock can be input from either P14 Back I/O or from
Front I/O, which is configured in the Conversion Signals Source Selection Register.
Each Sequencer, either on-board or on other boards when performing multi-board synchronization, needs to
set its Number of Conversion in the corresponding register; Even if the Number of Conversions is the same
for all sequencers.
The first falling Conversion Clock edge after the Frame Trigger triggers the first conversion of each frame.
Figure 7-4 : Timing in Frame Mode