Chapter 38
Programmable Delay Block (PDB)
38.1 Introduction
NOTE
For the chip-specific implementation details of this module's
instances, see the chip configuration information.
The Programmable Delay Block (PDB) provides controllable delays from either an
internal or an external trigger, or a programmable interval tick, to the hardware trigger
inputs of ADCs and/or generates the interval triggers to DACs, so that the precise timing
between ADC conversions and/or DAC updates can be achieved. The PDB can
optionally provide pulse outputs (Pulse-Out's) that are used as the sample window in the
CMP block.
38.1.1
Features
• Up to 15 trigger input sources and one software trigger source
• Up to 8 configurable PDB channels for ADC hardware trigger
• One PDB channel is associated with one ADC
• One trigger output for ADC hardware trigger and up to 8 pre-trigger outputs for
ADC trigger select per PDB channel
• Trigger outputs can be enabled or disabled independently
• One 16-bit delay register per pre-trigger output
• Optional bypass of the delay registers of the pre-trigger outputs
• Operation in One-Shot or Continuous modes
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 867
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