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AUX – Sensor Controller Registers
17.8.8.6 COMP Register (Offset = 5h) [reset = X]
COMP is shown in
and described in
Comparator Control COMPA and COMPB comparators
Figure 17-75. COMP Register
7
6
5
4
3
2
1
0
COMPA_REF_
COMPA_REF_
COMPB_TRIM
COMPB_EN
RESERVED
COMPA_EN
RES_EN
CURR_EN
R/W-X
R/W-X
R/W-X
R/W-X
R/W-X
R/W-X
Table 17-100. COMP Register Field Descriptions
Bit
Field
Type
Reset
Description
7
COMPA_REF_RES_EN
R/W
X
Enables 400kohm resistance from COMPA reference node to
ground. Used with COMPA_REF_CURR_EN to generate voltage
reference for cap-sense.
ground. Used with COMPA_REF_CURR_EN to generate voltage
reference for cap-sense.
6
COMPA_REF_CURR_EN
R/W
X
Enables 2uA IPTAT current from ISRC to COMPA reference node.
Requires ISRC.EN = 1. Used with COMPA_REF_RES_EN to
generate voltage reference for cap-sense.
Requires ISRC.EN = 1. Used with COMPA_REF_RES_EN to
generate voltage reference for cap-sense.
5-3
COMPB_TRIM
R/W
X
COMPB voltage reference trim temperature coded:
0h = No reference division
1h = Divide reference by 2
3h = Divide reference by 3
7h = Divide reference by 4
2
COMPB_EN
R/W
X
Comparator B enable
1
RESERVED
R/W
X
Software should not rely on the value of a reserved. Writing any
other value than the reset value may result in undefined behavior.
other value than the reset value may result in undefined behavior.
0
COMPA_EN
R/W
X
COMPA enable
1305
SWCU117A – February 2015 – Revised March 2015
AUX – Sensor Controller with Digital and Analog Peripherals
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