BU21072MUV_16 Datasheet, PDF (15/40 Pages) Rohm – Capacitive Switch Controller ICs

BU21072MUV / BU21078MUV / BU21078FV
【0xEF : Configure calibration】
Name:
LED_CALIB
Address: 0xEF
Description: This register is used to select whether to perform the calibration. The calibration is done by access to any
LED port or by periodic calibration.
LEDCAL : LED calibration：
This register is used to select whether to perform the self-calibration when any bit of the “LED drivers control
(0xFA)” register is accessed.
1 : Not perform calibration. 0 : Perform calibration. (Default)
PERCAL : Periodical calibration：
This register is used to select whether to perform the periodic calibration.
1 : Not perform the periodic calibration. 0 : Perform the periodic calibration. (Default)
PERCALCOND : Condition of periodical calibration：
This register is used to select the condition to perform the periodic calibration.
1 : Always. 0 : At the setting to "1" to any bit of the “LED drivers control (0xFA)” register. (Default)
PWMCAL :
In the case that the periodic calibration is active (The “PERCAL” bit is “0”), this register is used to select whether
to perform the periodic calibration when the LED port assigned to PWM function is set to active.
1 : Perform periodical calibration regardless of the condition of the LED port assigned to PWM function.
0 : Perform periodical calibration only the LED port assigned to PWM function is set to inactive. (default)
Condition
State of the LED port assignd to PWM function
More than one LED port is active
All LED port is inactive
bit state
PERCAL PWMCAL
0
0
1
1
0
1
0
0
1
1
0
1
Periodical Calibration
Not Performed
Performed
Not Performed
Performed
Not Performed
PERIOD[7:4] :
This register is used to set the interval of the periodic calibration.
The interval of the periodic calibration = About 5[sec] x (PERIOD + 1) (5sec≦The interval≦80sec)
0xEF
R/W
Initial val.
Bit7
PERIOD[3]
R/W
0
Bit6
PERIOD[2]
R/W
0
Bit5
PERIOD[1]
R/W
0
Bit4
PERIOD[0]
R/W
0
Bit3
PWMCAL
R/W
0
Bit2
PERCALCOND
R/W
0
Bit1
PERCAL
R/W
0
Bit0
LEDCAL
R/W
0
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TSZ02201-0L5L0F300640-1-2
14.Jul.2016 Rev.004