TLE9877QXA20_15 Datasheet, PDF (70/122 Pages) Infineon Technologies AG – Microcontroller with LIN and BLDC MOSFET Driver for Automotive Applications

TLE9877QXA20
Measurement Core Module (incl. ADC2)
23.2.2 Measurement Core Module Modes Overview
The basic function of this unit, is the digital signal processing of several analog digitized measurement signals by
means of filtering, level comparison and interrupt generation. The Measurement Core module processes ten
channels in a quasi parallel process.
As shown in the figure above, the ADC2 postprocessing unit consists of a channel controller (Sequencer), an 10-
channel demultiplexer and the signal processing block, which filters and compares the sampled ADC2 values for
each channel individually. The channel control block controls the multiplexer sequencing on the analog side before
the ADC2 and on the digital domain after the ADC2. As described in the following section, the channel sequence
can be controlled in a flexible way, which allows a certain degree of channel prioritization.
This capability can be used e.g. to set a higher priority to supply voltage channels compared to the other channel
measurements. The Measurement Core Module offers additionally two different post-processing measurement
modes for over-/undervoltage detection and for two-level threshold detection.
The channel controller (sequencer) runs in one of the following modes:
“Normal Sequencer Mode” – channels are selected according to the 10 sequence registers which contain
individual enablers for each of the 10 channels.
“Exceptional Interrupt Measurement” – following a hardware event, a high priority channel is inserted into the
current sequence. The current actual measurement is not destroyed.
“Exceptional Sequence Measurement” – following a hardware event, a complete sequence is inserted after the
current measurement is finished. The current sequence is interrupted by the exception sequence.
Data Sheet
70
Rev. 1.0, 2015-04-30