User Manual
231
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
System Control Unit - Power Modules (SCU-PM)
8.4
Interrupt Control Unit (ICU)
The Subblock Interrupt Control Unit (ICU) of the System Control Unit - Power Modules (SCU_PM) is responsible
for controlling and generating all analog peripheral relevant interrupts. Those analog interrupts are presented
to the NVIC nodes 13-24 and NMI. Those are:
•
PREWARN_SUP_NMI:
combines all supply relevant interrupts to NMI.
•
Analog Module Interrupts:
combines all analog modules related interrupts.
The following two chapters describe the structure of the interrupt nodes.
8.4.1
Structure of PREWARN_SUP_NMI
This interrupt groups all system supply relevant interrupts. They can be divided into two groups:
•
voltages monitored by the Measurement Unit and 10-Bit ADC.
The supply voltages VS, VBAT_SENSE,
VDDP and VDDC are monitored by the Measurement Unit and the 10-Bit ADC module. The Measurement
Unit can be considered as an independent monitoring instance for external supply voltages and internal
voltages generated by PMU. This monitoring is done with an independent reference and supply voltage to
ensure fail safe operation.
•
voltages monitored by measurement functions of the PMU:
The PMU itself is checking its output
voltages. Here failures due to undervoltage (overload), overvoltage and overcurrent are detected.
PREWARN_SUP
:
Field
Bits
Type
Description
RES
31:26
r
Reserved
Always read as 0
STCALIB
25:0
rw
System Tick Calibration
[25]: Noref
[24] Skew
[23:0] Reload value to use for 10ms (100 Hz) timing
STCALIB[23:0] = HCLK (in Hz) / 100 Hz - 1, e.g. 0x7A11F
Table 124 RESET
Register Reset Type
Reset Values
Reset Short Name
Reset Mode
Note
RESET_TYPE_4
00000000
H
RESET_TYPE_4
