BU21072MUV_16 Datasheet, PDF (18/40 Pages) Rohm – Capacitive Switch Controller ICs

BU21072MUV / BU21078MUV / BU21078FV
【0xFF : AFE control】
Name:
CNT
Address: 0xFF
Description: This register is for control of AFE.
ACT : Scan Enable：
This bit is the scan enable for sensors. 1:Scan Enable. 0:Scan Disable.
CAL : Act Software-calibration：
This bit is the act software-calibration. Writing „1‟ to this bit, the calibration sequence is executed. When
software calibration is complete, write „0‟ to this bit.
CFG : Enable Configuration Value：
Writing „1‟ to this bit, the values of Sensor Configuration (Address 0xC0-0xCF), Mask Configuration (Address
0xD0-0xDF), PWM Configuration (Address 0xE0-0xEF), FRCRLS and CALOVF are effective to IC‟s
operation.
CALMOD : Select Software-calibration mode：
0: All sensors are the targets for software-calibration. If some sensor has the value more than the threshold
for "Off→On", the sensors are changed to OFF, and DETECT_OFF registers are enable. (default)
1: Except for the sensor that has the value more than the threshold for "Off→On”.
CALOVF : Select Self-calibration mode detected overflow :
When the periodic calibration is active, select to act self-calibration or not to act in the case that the sensor
values are over the dynamic range of included ADC.
0: Act self-calibration(default) 1:Non act self-calibration.
FRCRLS : Select Force OFF at continued touch：
When the continued touch is active, select to force OFF not to do in the case that the max value after detect
continued touch minus the current sensor value is more than the threshold for "Off→On”.
0: Non force OFF(default) 1:Act force OFF.
The continued touch sensor is changed to OFF, and DETECT_OFF register is enable.
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0xFF
FRCRLS CALOVF
-
CALMOD
-
CFG
CAL
ACT
R/W
R/W
R/W
-
R/W
-
R/W
R/W
R/W
Initial val.
0
0
-
0
-
0
0
0
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TSZ22111・15・001
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TSZ02201-0L5L0F300640-1-2
14.Jul.2016 Rev.004