Multiple Channel Capacitive Touch Sensor and LED Driver
Datasheet
Bit 1 - S2_CEN - Enables the CS2 input to be re-calibrated automatically.
Bit 0 - S1_CEN - Enables the CS1 input to be re-calibrated automatically.
5.20 Calibration Activate Registers
Table 5.28 Calibration Activate Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
Calibration
Activate
G_
CAL
S7_
CAL
S6_
CAL
S5_
CAL
S4_
CAL
S3_
CAL
S2_
CAL
S1_
CAL
26h
R/W
00h
The Calibration Activate register force the respective sensors to be re-calibrated. When a bit is set,
the corresponding Capacitive Touch Sensor will be re-calibrated and the bit will be automatically
cleared once the re-calibration routine has finished. During the re-calibration routine, the sensors will
not detect a press for up to 600ms and the Sensor Base Count register values will be invalid. During
this time, any press on the corresponding sensors will invalidate the re-calibration.
Bit 7 - G_CAL - When set, all sensors in the group are re-calibrated. This bit is automatically cleared
once all of the sensors in the group have been re-calibrated successfully.
Bit 6 - S7_CAL - When set, the CS7 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 5 - S6_CAL - When set, the CS6 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 4 - S5_CAL - When set, the CS5 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 3 - S4_CAL - When set, the CS4 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 2 - S3_CAL - When set, the CS3 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 1 - S2_CAL - When set, the CS2 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 0 - S1_CAL - When set, the CS1 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
5.21 Interrupt Enable Registers
Table 5.29 Interrupt Enable Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
Interrupt
Enable 1
G_INT_
EN
S7_INT_
EN
S6_INT_ S5_INT_
S4_INT_
EN
S3_INT_
EN
S2_INT
_EN
S1_INT_
EN
27h
R/W
FFh
EN
EN
Interrupt
Enable 2
GPIO8_
INT_EN
GPIO7_
INT_EN
GPIO6_
INT_EN
GPIO5_
INT_EN
GPIO4_
INT_EN
GPIO3_
INT_EN
GPIO2_
INT_EN
GPIO1_
INT_EN
28h
R/W
00h
The Interrupt Enable registers determine whether a button press or GPIO input changing state causes
the interrupt pin to be asserted.
SMSC CAP1014
Revision 1.65 (08-11-09)
DATA4S9HEET
SMSC [ SMSC CORPORATION ]
