SX8635I05AWLTRT SEMTECH [Semtech Corporation], SX8635I05AWLTRT Datasheet - Page 57

• Manufacturer Part Number: SX8635I05AWLTRT
• Description: Low Power, Capacitive Button and Wheel Touch Controller with Enhanced LED
• Manufacturer: SEMTECH [Semtech Corporation]

ADVANCED COMMUNICATIONS & SENSING
MapWakeupSize
The number of keys defining the wakeup sequence can be set from 1 to 6.
If the size is set to 0 then wakeup is done on any sensor event.
if the size is set to 6 then wakeup is done only by GPI or an I2C command (may be required if proximity sensing
is enable, see § 3.17 for more details).
MapWakeupValue0, MapWakeupValue1, MapWakeupValue2
For the wakeup sequence Btn2 -> Btn5 -> Btn6 ->Btn0 the required register settings are:
Revision 7_8, October 10
Mapping Parameters
Address
0x3D
0x3E
0x3F
- MapWakeupSize set to 0x04,
- key0 = 0x2
- key1 = 0x5
Name
MapAutoLightGrp1Msb
MapAutoLightGrp1Lsb
MapSegmentHysteresis
Bits
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7:0
(12 sensors) with Enhanced LED Drivers and Proximity Sensing
Description
Btn2
Btn1
Btn0
Reserved
Wheel Touch
Rotate Clockwise
Rotate Counter Clockwise
Btn11
Btn10
Btn9
Btn8
Btn7
Btn6
Btn5
Btn4
Btn3
Btn2
Btn1
Btn0
Defines the position hysteresis for detecting a segment change.
The hysteresis is defined as a percentage of the maximum wheel position.
0x00: 0%
…
0x02: 2% (default)
…
0x64: 100%
This hysteresis applies to all segments of the wheel.
Table 20
© 2010 Semtech Corp.
Low Power, Capacitive Button and Wheel Touch Controller
Mapping Parameters
57
Defines Group1 sensor events:
0: OFF (default)
1: ON
If any of the enabled sensor events occurs the
Group0 event will occur as well.
All sensors events within the group can be
independently set.
DATASHEET
www.semtech.com
SX8635