8 Channel Capacitive Touch Sensor with 8 LED Drivers
Datasheet
5.12 Interrupt Enable Register
Table 5.19 Interrupt Enable Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
Interrupt
Enable
CS8_
INT_EN
CS7_
INT_EN
CS6_
INT_EN
CS5_
INT_EN
CS4_
INT_EN
CS3_
INT_EN
CS2_
INT_EN
CS1_
INT_EN
27h
R/W
FFh
The Interrupt Enable registers determine whether a sensor touch or release causes the interrupt pin
to be asserted.
Bit 7 - CS8_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS8
(associated with the CS8 status bit).
‘0’ - The interrupt pin will not be asserted if a touch is detected on CS8 (associated with the CS8
status bit).
‘1’ (default) - The interrupt pin will be asserted a touch is detected on CS8 (associated with the
CS8 status bit).
Bit 6 - CS7_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS7
(associated with the CS7 status bit).
Bit 5 - CS6_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS6
(associated with the CS6 status bit).
Bit 4 - CS5_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS5
(associated with the CS5 status bit).
Bit 3 - CS4_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS4
(associated with the CS4 status bit).
Bit 2 - CS3_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS3
(associated with the CS3 status bit).
Bit 1 - CS2_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS2
(associated with the CS2 status bit).
Bit 0 - CS1_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS1
(associated with the CS1 status bit).
5.13 Repeat Rate Enable Register
Table 5.20 Repeat Rate Enable Register
ADDR
28h
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
Repeat Rate
Enable
CS8_
RPT_EN
CS7_
RPT_EN
CS6_
RPT_EN
CS5_
RPT_EN
CS4_
RPT_EN
CS3_
RPT_EN
CS2_
RPT_EN
CS1_
RPT_EN
R/W
FFh
The Repeat Rate Enable register determines the interrupt behavior of the buttons as described in
Section 4.6.1.
Bit 7 - CS8_RPT_EN - Enables the repeat rate for Capacitive Touch Sensor 8.
‘0’ - The repeat rate for CS8 is disabled. It will only generate an interrupt when a touch is detected
and when a release is detected no matter how long the touch is held for.
‘1’ (default) - The repeat rate for CS8 is enabled. In the case of a “touch” event, it will generate an
interrupt when a touch is detected and a release is detected. In the case of a “press and hold”
SMSC CAP1088
Revision 1.1 (08-05-09)
DATA4S5HEET
SMSC [ SMSC CORPORATION ]
