Datasheet

Overview

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24.1 Overview

The HET transfer unit is a dedicated direct memory access controller which transfers data between the

NHET RAM and RAM buffers located in the main memory address range. This eliminates time consuming

CPU accesses to the NHET RAM to gather measurement data or creating output waveforms and thus

freeing up the CPU to perform other tasks.

24.1.1 Features

• Independently transfers data between the NHET and the main memory

• 8 double control packets supporting dual buffer configuration

• Transfer requests generated by NHET instructions/events

• One shot, circular and auto switch buffer transfer modes for each double control packet for flexible

buffer handling

• Constant and post-increment addressing modes

• 32- or 64-bit transactions

• Programmable memory protection region

• Parity protect control packet RAM

• Extensive diagnostic functionality

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High-End Timer Transfer Unit (HTU) Module SPNU563–May 2014

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