Datasheet

t
COORDINATE
+
OH2
f
OSC
)
ǒ
t
PRE
)t
SNS
)
OH
DLY2
f
OSC
Ǔ
)N @
ǒ(
B)2
)
@
f
OSC
f
ADC
)OH
CONV
Ǔ
@
ǒ
1
f
OSC
Ǔ
)
ǒ
L
PPRO
f
OSC
Ǔ
(9)
NOTE:(1)Optional.Ifnotturnedon,itwillbeturnedonbytheScanmode,oncedetected.
Detecting
Touch
PINTDAV Programmed:
As ,
CFR2,D[15:14]=10
PENIRQ
As ,
CFR2,D[15:14]=11or01
DAV
As and ,
CFR2D[15:14]=00
PENIRQ DAV
Programmed
for
Host-Controlled
Mode
(PSM=0)
CS
Deactivated
Z
Scan
Mode
Reading
Z -Data
Register
1
WaitingforHosttoWrite
IntoControlByte1D[6:3]
TouchisDetected
Reading
Z -Data
Register
2
CS
Deactivated
CS
Deactivated
Detecting
Touch
WaitingforHosttoWrite
IntoControlByte1D[6:3]
TouchisDetected
t
COORDINATE
TurnOn
Y+
and
X
Drivers
-
(1)
Programmedfor:
Sample,Conversion,
andPreprocessing
forZ Coordinate
1
Sample,Conversion,
andPreprocessing
forZ Coordinate
2
t
COORDINATE
+
OH2
f
OSC
)
ǒ
t
PVS
)t
PRE
)t
SNS
)
OH
DLY1
f
OSC
Ǔ
)N @
ǒ(
B)2
)
@
f
OSC
f
ADC
)OH
CONV
Ǔ
@
ǒ
1
f
OSC
Ǔ
)
ǒ
L
PPRO
f
OSC
Ǔ
(10)
Detecting
Touch
PINTDAV Programmed:
As ,
CFR2,D[15:14]=10
PENIRQ
As ,
CFR2,D[15:14]=11or01
DAV
As and ,
CFR2D[15:14]=00
PENIRQ DAV
Programmedfor
Host-Controlled
Mode
(PSM=0)
CS
Deactivated
P ograr mm d
for
Z -Z
ScanMode
e
1 2
Reading
Z -Data
Register
1
WaitingforHosttoWrite
IntoControlByte1D[6:3]
Sample,Conversion,and
PreprocessingforZ ,Z Coordinates
1 2
TouchisStillHere
Reading
Z -Data
Register
2
CS
Deactivated
CS
Deactivated
Detecting
Touch
WaitingforHosttoWrite
IntoControlByte1D[6:3]
TouchisDetected
t
COORDINATE
TSC2006
SBAS415C – JUNE 2007 – REVISED MARCH 2009 ......................................................................................................................................................... www.ti.com
The time needed to convert any Z
1
and Z
2
coordinate under host control (not including the time needed to send
the command over the SPI bus) is given by:
Figure 39. Example of Z
1
and Z
2
Coordinate Touch Screen Scan
(without Panel Stabilization Time) using TSMode 3
If the drivers are not turned on befire the touch screen mode is programmed, the panel stabilization time should
be included. In this case, the time needed to convert an single X or Y under host control (not including the time
needed to send the command over the SPI bus) is given by:
Figure 40. Example of a Z
1
and Z
2
Coordinate Touch Screen Scan
(with Panel Stabilization Time) using TSMode 3
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Product Folder Link(s): TSC2006