sx8634 Semtech Corporation, sx8634 Datasheet - Page 51
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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)
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ADVANCED COMMUNICATIONS & SENSING
5.5 Slider Parameters
Revision 7_6, October 10
Slider Parameters
Address
0x27
0x28
0x29
0x2B
0x2C
0x2D
0x2E
0x2F
0x30
Name
SldCfg
SldStuckAtTimeout
SldHysteresis
SldNormMsb
SldNormLsb
SldAvgThresh
SldCompNegThresh
SldCompNegCntMax 7:0
SldMoveThresh
Bits
7:4
3:2
1:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
Description
Reserved
Defines the number of samples at the scan period for determining a release
00: OFF, use incoming sample (default)
01: 2 samples debounce
10: 3 samples debounce
11: 4 samples debounce
Defines the number of samples at the scan period for determining a touch
00: OFF, use incoming sample (default)
01: 2 samples debounce
10: 3 samples debounce
11: 4 samples debounce
Defines the stuck at timeout.
0x00: OFF (default)
0x01: 1 second
…
0xFF: 255 seconds
Defines the Slider Touch/Release Hysteresis.
0x00: 0
0x01: 4
…
0x03: 12 (default)
…
0xFF: 1020
Slider Norm Msb
Slider Norm Lsb
Defines the positive threshold for disabling the processing filter averaging.
If ticks are above the threshold, then the averaging is suspended
0x00: 0
0x01: 4
…
0x50: 320 (default)
…
0xFF: 1020
Defines the negative offset compensation threshold.
0x00: 0
0x01: 4
…
0x50: 320 (default)
…
0xFF: 1020
Defines the number of ticks (below the negative offset compensation threshold)
which will initiate an offset compensation.
0x00: Reserved
0x01: 1 sample (default)
…
0xFF: 255 samples
Defines the threshold for detecting a move high or move low.
The threshold is a percentage of the maximum slider position.
0x00: 0%
…
0x02: 2% (default)
(12 sensors) with Enhanced LED Drivers and Proximity Sensing
© 2010 Semtech Corp.
Low Power, Capacitive Button and Slider Touch Controller
51
Defines the 16 bits slider norm (default 0x0180)
DATASHEET
www.semtech.com
SX8634
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