sx8634 Semtech Corporation, sx8634 Datasheet - Page 57
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sx8634
Manufacturer Part Number
sx8634
Description
Low Power, Capacitive Button And Slider Touch Controller 12 Sensors With Enhanced Led Drivers And Proximity Sensing
Manufacturer
Semtech Corporation
Datasheet
1.SX8634.pdf
(80 pages)
- Current page: 57 of 80
- Download datasheet (1000Kb)
ADVANCED COMMUNICATIONS & SENSING
MapAutoLight0, MapAutoLight1, MapAutoLight2, MapAutoLight3
MapAutoLightGrp0Msb, MapAutoLightGrp0Lsb, MapAutoLightGrp1Msb, MapAutoLightGrp1Lsb
Revision 7_6, October 10
These registers define the mapping between the GPO pins
will control its ON/OFF state.
The mapping can be done to a specific sensor event but also on groups (in this case any sensor event in the
group will control the GPO).
Table 21 defines for each selectable sensor event, which action will trigger corresponding GPO to switch ON
or OFF.
Examples:
- If GPO[0] should change state accordingly to Btn4 then MapAutoLight3[3:0] should be set to 0x04.
- If GPO[0] should change state accordingly to Btn0 or Btn1 then Group0 can be used as following:
When the Slider Segment event is mapped, the number of GPOs mapped to it determines the number of slider
segments. The GPO with the lowest pin index is mapped on the segment with the smallest positions.
E.g. if two GPOs (e.g.GPO[0] and GPO[1]) are mapped to the Slider Segment event then the slider is split in
two segments. GPO[0] will turn ON for a touch on the slider segment [0, SldPosMax/2] and GPO[1] for a touch
on the slider segment [SldPosMax/2, SldPosMax].
- MapAutoLight3[3:0] should be set to 0x0C (ie Group0).
- MapAutoLightGrp0 should be set to 0x0003 (ie Btn0 or Btn1)
=> MapWakeupValue2 set to 0x52
- key2 = 0x6
- key3 = 0x0
=> MapWakeupValue2 set to 0x06
MapAutoLight
BtnX
Slider Touch
Slider Move High
Slider Move Low
Slider Segment
Table 21
(12 sensors) with Enhanced LED Drivers and Proximity Sensing
Autolight Mapping, Sensor Information
© 2010 Semtech Corp.
Low Power, Capacitive Button and Slider Touch Controller
Segment Touched
Move High
Move Low
GPO ON
Touch
Touch
57
(with Autolight ON)
Move High or Release
Move Low or Release
Segment Released
GPO OFF
Release
Release
and the sensor information which
DATASHEET
www.semtech.com
SX8634
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