User Manual
751
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
Measurement Core Module (incl. ADC2)
23.8
Start-up Behavior after Reset
After the end of a reset phase the measurement sources and the post-processing units need some time for
settling. In order to avoid undesired triggering of interrupts until the measurement signal acquisition is in a
steady state, the status signals are forced to zero during the start-up phase.
The end of the start-up phase is indicated by the ready signal MI_RDY.
Measurement Core start-up procedure:
the startup time of the complete signal chain are 2200 EoC cycles.
The IIR-filter coefficient is set to C=2^-1 (fastest response time).
During the startup phase, the DPP will use SQ=11_1111_1111, regardless of the sequence registers
configuration.
23.9
Postprocessing Default Values
The following table shows the assigned measurements of the particular channels and the reset default values
which read from FW during power-up. Since the channels 6-9 of the unit are exclusively used for internal
measurements, they can only be partly accessed by the application software.
Table 408 Channel
allocation
and postprocessing default settings (effective after reset)
Chan
nel#
Name
Function
MMO
DE
1)
1) Register MMODE0_7; 0 = range control, 1 = UV, 2 = OV
FILTCO
EFF
2)
2) Register FILTCOEFF0_7; 0 = 1/2, 1 = 1/4, 2 = 1/8, 3 = 1/16
Threshold
digital
3)
3) Bitfield THUP_CHn / THLO_CHn
Threshol
d analog
Hyster
esis
4)
4) Bitfield HYST_UP_CHn / HYST_LO_CHn; 0 = hyst off, 1 = hyst 4, 2 = hyst 8, 3 = hyst 16
Coun
ters
5)
5) Bitfield CNT_UP_CHn / CNT_LO_CHn; 0 = 1 meas., 1 = 2 meas., 2 = 4 meas., 3 = 8 meas.
Ch. 0 VS
VS supply voltage
0
1
upper E8
H
28.08V
1
1
lower 25
H
4.43V
1
1
Ch. 1 VDDEXT
5V supply voltage for
external
0
1
upper E9
H
5.42V
1
1
lower BF
H
4.44V
1
1
Ch. 2 VDDP
5V port supply voltage
0
1
upper E9
H
5.42V
1
1
lower 6F
H
2.58V
1
1
Ch. 3 Vbg
measures 1V reference
voltage from PMU
0
1
upper AF
H
1.10V
1
1
lower 8F
H
0.90V
1
1
Ch. 4 VDDC
1.5V core supply voltage 0
1
upper FB
H
1.58V
1
1
lower D4
H
1.33V
1
1
Ch. 5 TEMP_LS temperature lowsides
2
1
upper DD
H
180°C
1
1
lower CF
H
151°C
1
1
Ch. 6 TEMP_Ce
ntral
temperature central
2
1
upper DD
H
180°C
1
3
lower C2
H
124°C
1
3