BU21009MUV Datasheet, PDF (9/14 Pages) Rohm – Capacitive Sensor Switch Control IC

BU21009MUV
Technical Note
【ECh : XY matrix setting】
Name:
POS_MODE
Address:
ECh
Description: Setting when two or more sensor are displayed to the first origin and position is detected.
XY : This selects between two matrix configurations.
1 = X axis →SIN [10 : 5] , Y axis → SIN [11:4:12:3:13:2:14:1:15:0]
0 = X axis →SIN [0 : 7] , Y axis → SIN [8:15]
POS_EN : The position tracking enable
Enables the condition under which the position tracking is made effective.
1=When either of sensor exceeds the threshold, the data of the position tracking is made effective.
If all registers do not exceed the threshold, the data of the position tracking is (POSX,POSY) = (0,0).
0=the position is detected regardless of the level of the sensor data, and data is made effective.
Initial state: When either of sensor exceeds the threshold, the positional detection data is made effective (=1).
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
ECh
-
-
-
-
-
-
POS_EN
XY
R/W
-
-
-
-
-
-
W
W
Initial val.
-
-
-
-
-
-
1
1
【EEh : Soft Calibration】
Name:
CALIB
Address:
EEh
Description: This forces a chip re-calibration when a 1 is written and returns to 0 afterward automatically. Please note
that one should always re-calibrate after changing the gain adjustment value.
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
EEh
-
-
-
-
-
-
-
CALIB
R/W
-
-
-
-
-
-
-
W
Initial val.
-
-
-
-
-
-
-
0
【EFh : Setting Done, Detect Start】
Name:
DONE
Address:
EFh
Description: This register should be written to following register updates.
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
EFh
-
-
-
-
-
-
-
DONE
R/W
-
-
-
-
-
-
-
W
Initial val.
-
-
-
-
-
-
-
0
【F0h / F1h : Sensor Channel Setting】
Name:
SENS_CH
Address:
F0h / F1h
Description: Individual enabling and disabling of sensor channels. 1：Effective
0：Not in use
F0h
F1h
R/W
Initial val.
Bit7
SIN7
SIN15
W
0
Bit6
SIN6
SIN14
W
0
Bit5
SIN5
SIN13
W
0
Bit4
SIN4
SIN12
W
0
Bit3
SIN3
SIN11
W
0
Bit2
SIN2
SIN10
W
0
Bit1
SIN1
SIN9
W
0
Bit0
SIN0
SIN8
W
0
【F2h : LED Channel Setting】
Name:
LED_CH
Address:
F2h
Description: Enables and disables the channels to be used as LED outputs. Valid for the 8 LED outputs.
1：Effective 0：Not in use
F2h
R/W
Initial val.
Bit7
LED7
W
0
Bit6
LED6
W
0
Bit5
LED5
W
0
Bit4
LED4
W
0
Bit3
LED3
W
0
Bit2
LED2
W
0
Bit1
LED1
W
0
Bit0
LED0
W
0
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9/13
2009.04 - Rev.B