User Manual
803
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
10-Bit Analog Digital Converter (ADC1)
24.7.2
IIR Filter Control Registers
The IIR Filter can also be configured by the
sfr
Register shown below.
registers are 12 bits wide, but the ADC delivers only a resolution
of 10 bits.
shows how the lower two bits are determined.
The result of the calibration unit is 12 bits (see
), the output is feed into the IIR filter. The internal result
of the IIR filter is 12 bits (see
), the output is converted to 10 bit and feed into the postprocessing. The
user can monitor the calculated values in the
registers and gets
access to 10 bit wide result information.
Table 436 ADC1_FILT_OUT
register
setting
.calib_en
.output[1:0]
0
0
“00”
0
1
“filt_out(3:2)”
1
0
“calib_out(1:0)”
1
1
“filt_out(3:2)”
Table 437 Register
Overview
Register Short Name
Register Long Name
Offset Address
Reset Value
Filter Coefficients Measurement Unit Channel 0-
11
60
H
00AA AAAA
H
ADC1 or Filter Output Channel 0
70
H
0000 0000
0000 0000
0000 00XX
XXXX XXXX
B
ADC1 or Filter Output Channel 1
74
H
0000 0000
0000 0000
0000 00XX
XXXX XXXX
B
ADC1 or Filter Output Channel 2
78
H
0000 0000
0000 0000
0000 00XX
XXXX XXXX
B
ADC1 or Filter Output Channel 3
7C
H
0000 0000
0000 0000
0000 00XX
XXXX XXXX
B
ADC1 or Filter Output Channel 4
80
H
0000 0000
0000 0000
0000 00XX
XXXX XXXX
B