8 Channel Capacitive Touch Sensor with 2 LED Drivers
Datasheet
Table 5.1 Register Set in Hexadecimal Order (continued)
REGISTER
ADDRESS
DEFAULT
VALUE
R/W
REGISTER NAME
FUNCTION
PAGE
Averaging and
Sampling Config
Controls averaging and sampling
window
24h
26h
27h
28h
R/W
39h
00h
FFh
FFh
Page 51
Forces re-calibration for capacitive
touch sensor inputs
R/W
R/W
R/W
Calibration Activate
Interrupt Enable
Page 53
Page 53
Page 54
Enables Interrupts associated with
capacitive touch sensor inputs
Enables repeat rate for all sensor
inputs
Repeat Rate Enable
Determines the number of
simultaneous touches to flag a
multiple touch condition
Multiple Touch
Configuration
2Ah
2Bh
2Dh
2Fh
30h
R/W
R/W
R/W
R/W
R/W
80h
00h
FFh
8Ah
40h
Page 55
Page 55
Page 57
Page 57
Page 59
Multiple Touch Pattern
Configuration
Determines the multiple touch
pattern (MTP) configuration
Determines the pattern or number of
sensor inputs used by the MTP
circuitry
Multiple Touch Pattern
Recalibration
Configuration
Determines re-calibration timing and
sampling window
Stores the delta count threshold to
determine a touch for Capacitive
Touch Sensor Input 1
Sensor Input 1
Threshold
Stores the delta count threshold to
determine a touch for Capacitive
Touch Sensor Input 2
Sensor Input 2
Threshold
31h
32h
33h
34h
35h
36h
R/W
R/W
R/W
R/W
R/W
R/W
40h
40h
40h
40h
40h
40h
Page 59
Page 59
Page 59
Page 59
Page 59
Page 60
Stores the delta count threshold to
determine a touch for Capacitive
Touch Sensor Input 3
Sensor Input 3
Threshold
Stores the delta count threshold to
determine a touch for Capacitive
Touch Sensor Input 4
Sensor Input 4
Threshold
Stores the delta count threshold to
determine a touch for Capacitive
Touch Sensor Input 5
Sensor Input 5
Threshold
Stores the delta count threshold to
determine a touch for Capacitive
Touch Sensor Input 6
Sensor Input 6
Threshold
Stores the delta count threshold to
determine a touch for Capacitive
Touch Sensor Input 7
Sensor Input 7
Threshold
Stores the delta count threshold to
determine a touch for Capacitive
Touch Sensor Input 8
Sensor Input 8
Threshold
37h
38h
R/W
R/W
40h
01h
Sensor Input Noise
Threshold
Stores controls for selecting the
noise threshold for all sensor inputs
Page 60
Revision 1.32 (01-05-12)
SMSC CAP1128
DATA3S8HEET
SMSC [ SMSC CORPORATION ]
