BU21072MUV_16 Datasheet, PDF (10/40 Pages) Rohm – Capacitive Switch Controller ICs

BU21072MUV / BU21078MUV / BU21078FV
【0xC0 – 0xC7 : Select a setting for Gain and Threshold for “Off→On”】
Name:
CFG_SIN
Address: 0xC0 – 0xC7
Description: You can set 3 values for gain and set 3 values for threshold for “Off → On” to this IC.
These registers are used to select a setting for gain and threshold from three settings for every each
sensor.
Gain：GA_SIN*[1:0] =
0x0 : Select GA0.
0x1 : Select GA1.
0x2 : Select GA2.
0x3 : Select GA0.
Threshold：ON_SIN*[1:0] = 0x0 : Select ON0.
0x1 : Select ON1.
0x2 : Select ON2.
0x3 : Select ON0.
0xC0
0xC1
0xC2
0xC3
0xC4
0xC5
0xC6
0xC7
R/W
Initial val.
Bit7
GA_SIN1[1]
GA_SIN3[1]
GA_SIN5[1]
GA_SIN7[1]
GA_SIN9[1]
GA_SIN11[1]
GA_SIN13[1]
GA_SIN15[1]
R/W
0
Bit6
GA_SIN1[0]
GA_SIN3[0]
GA_SIN5[0]
GA_SIN7[0]
GA_SIN9[0]
GA_SIN11[0]
GA_SIN13[0]
GA_SIN15[0]
R/W
0
Bit5
ON_SIN1[1]
ON_SIN3[1]
ON_SIN5[1]
ON_SIN7[1]
ON_SIN9[1]
ON_SIN11[1]
ON_SIN13[1]
ON_SIN15[1]
R/W
0
Bit4
ON_SIN1[0]
ON_SIN3[0]
ON_SIN5[0]
ON_SIN7[0]
ON_SIN9[0]
ON_SIN11[0]
ON_SIN13[0]
ON_SIN15[0]
R/W
0
Bit3
GA_SIN0[1]
GA_SIN2[1]
GA_SIN4[1]
GA_SIN6[1]
GA_SIN8[1]
GA_SIN10[1]
GA_SIN12[1]
GA_SIN14[1]
R/W
0
Bit2
GA_SIN0[0]
GA_SIN2[0]
GA_SIN4[0]
GA_SIN6[0]
GA_SIN8[0]
GA_SIN10[0]
GA_SIN12[0]
GA_SIN14[0]
R/W
0
Bit1
ON_SIN0[1]
ON_SIN2[1]
ON_SIN4[1]
ON_SIN6[1]
ON_SIN8[1]
ON_SIN10[1]
ON_SIN12[1]
ON_SIN14[1]
R/W
0
Bit0
ON_SIN0[0]
ON_SIN2[0]
ON_SIN4[0]
ON_SIN6[0]
ON_SIN8[0]
ON_SIN10[0]
ON_SIN12[0]
ON_SIN14[0]
R/W
0
【0xC8 – 0xC9 : Value of GAIN】
Name:
GA0, GA1, GA2
Address: 0xC8 – 0xC9
Description: This register is for setting the gain of AFE. The smaller the value of GA, the gain will be higher. You can set
3 values for gain. These value are assigned to each sensor by register GA_SIN included CFG_SIN.
The settable range： 0x1 ≦ GA ≦ 0xF
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0xC8
GA1[3]
GA1[2]
GA1[1]
GA1[0]
GA0[3]
GA0[2]
GA0[1]
GA0[0]
0xC9
-
-
-
-
GA2[3]
GA2[2]
GA2[1]
GA2[0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial val.
0
0
0
0
0
0
0
0
【0xCA – 0xCC : Value of the threshold for "Off →On"】
Name:
ON0, ON1, ON2
Address: 0xCA – 0xCC
Description: These registers are for setting the threshold for “Off → On” operation. You can set 3 values for threshold. If
the 8bit ADC value of each sensor (register SENS_DATA) is larger than this value, the valid “Off → On”
operation of the sensor is. These value are assigned to each sensor by register ON_SIN included
CFG_SIN.
The settable range ： 0x00 ＜ OFF ＜ ON ＜ 0xFF
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0xCA
ON0[7]
ON0[6]
ON0[5]
ON0[4]
ON0[3]
ON0[2]
ON0[1]
ON0[0]
0xCB
ON1[7]
ON1[6]
ON1[5]
ON1[4]
ON1[3]
ON1[2]
ON1[1]
ON1[0]
0xCC
ON2[7]
ON2[6]
ON2[5]
ON2[4]
ON2[3]
ON2[2]
ON2[1]
ON2[0]
R/W
-
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial val.
-
0
0
0
0
0
0
0
【0xCD : Value of the threshold for "On → Off"】
Name:
OFF
Address: 0xCD
Description: This register is for setting the threshold for “On → Off” operation. If the 8bit ADC value of each sensor
(register SENS_DATA) is smaller than this value, the valid “On → Off” operation of the sensor is.
The setting range ： 0x00 ＜ OFF ＜ ON ＜ 0xFF
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0xCD
-
OFF [6]
OFF [5]
OFF [4]
OFF [3]
OFF [2]
OFF [1]
OFF [0]
R/W
-
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial val.
-
0
0
0
0
0
0
0
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14.Jul.2016 Rev.004