Freescale Semiconductor Evaluation Board for Touch Sensing Platform EVBCRTOUCH EVBCRTOUCH Data Sheet
Product codes
EVBCRTOUCH
Memory Map and Registers Description
CRTouch Data Sheet, Rev. 3
Freescale Semiconductor
43
4.2.2.5
Slider and rotary dynamic status
4.2.2.6
Slider and rotary static status
Signal
Description
7-0
Electrode Instant
Delta
Electrode 3 to Electrode 0 instant capacitance variation with respect to its baseline.
This register is in signed format, ranging from -128 to 127. If the instant value is
greater than these values, the Delta value is saturated.
This register is in signed format, ranging from -128 to 127. If the instant value is
greater than these values, the Delta value is saturated.
Bit
7
6
5
4
3
2
1
0
Field
CTDSMOV
CTDSDIR
Reserved
CTDSVAL
Signal
Description
7
CTDSMOV
Capacitive Touch Dynamic Status Movement indicates if movement is being detected at
the moment of reading. 1 Indicates that there is movement detected
the moment of reading. 1 Indicates that there is movement detected
6
CTDSDIR
Capacitive Touch Dynamic Status Direction is used to determine the direction of
movement. 1 indicates an incremental movement. This bit remains with its last value even
if movement has stop and is no longer detected.
movement. 1 indicates an incremental movement. This bit remains with its last value even
if movement has stop and is no longer detected.
5-4
Reserved
Reserved
3-0
CTDSVAL
Capacitive Touch Dynamic Status value indicates the difference in positions from the last
status to the new one. This indicates how many positions have been advanced in the
current direction of movement.
status to the new one. This indicates how many positions have been advanced in the
current direction of movement.
Bit
7
6
5
4
3
2
1
0
Field
CTSSTOUCH
CTSSINV
Reserved
CTDSVAL