Multiple Channel Capacitive Touch Sensor and LED Driver
Datasheet
Table 5.7 Example Slider Absolute Position Decode (continued)
POS[6:0]
SETTINGS
TOUCH POSITION
CS12
CS13
CS14
42h (68d)
52h (82d)
62h (98d)
5.4.2
Volumetric Data
If they are setup to present Volumetric Data (see Section 5.14) then the bits will encode a range from
0 to 100. This value is updated based on the Grouped sensor activity:
A slide in the “UP” direction will increase the volumetric data by the Volumetric Step setting (see
Section 5.6) whenever an interrupt is generated (including extra interrupts generated after the slide
is complete).
A slide in the “DOWN” direction will decrease the volumetric data by the Volumetric Step setting
(see Section 5.6) whenever an interrupt is generated (including extra interrupts generated after the
slide is complete)
A tap (see Section 4.5.1) on the “UP” side will increase the volumetric data by a value of 1.
A tap on the “DOWN” side will decrease the volumetric data by a value of 1.
A press and hold (see Section 4.5.2) on the “UP” side will increase the volumetric data by a value
of 1 at every repeat rate interval.
A press and hold (see Section 4.5.2) on the “DOWN” side will decrease the volumetric data by a
value of 1 at every repeat rate interval.
The bits are read / write.
5.5
Vendor ID Register
Table 5.8 Vendor ID Register
ADDR
08h
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
R
Vendor ID
0
1
0
1
1
1
0
1
5Dh
The Vendor ID register stores an 8-bit value that represents SMSC.
5.6
Volumetric Step Register
Table 5.9 Volumetric Step Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
09h
R/W
Volumetric Step
-
-
-
-
VOL_STEP[3:0]
01h
The Volumetric Step register controls the size of a step to the volumetric data when a slide is detected
in the UP and DOWN directions.
Bits 3 - 0 - VOL_STEP[3:0] - Determines the volumetric data step when a slide is detected. Each LSB
corresponds to a value of ±1.
Revision 1.65 (08-11-09)
SMSC CAP1014
DATA3S8HEET
SMSC [ SMSC CORPORATION ]
