sx8661 Semtech Corporation, sx8661 Datasheet - Page 52

• Manufacturer Part Number: sx8661
• Description: Low Power, Capacitive Button Touch And Proximity Controller 8 Sensors With Led Drivers And Analog Output
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
ProxDebounce
ProxHysteresis
ProxReporting
ProxIntensity
Revision v3.2, January 2011
Proximity Parameters
Address
0x20
0x21
Defines the number of samples for determining proximity detection or out of proximity detection.
This parameter allows to set the debouncer of the proximity differently from the buttons debouncer.
Proximity is detected if the ticks are getting larger as the value defined by:
Out of proximity is detected if the ticks are getting smaller as the value defined by:
Defines the reporting mode of proximity (either dual or triple) on the GPIOs.
Defines the proximity intensity index (applicable in triple reporting mode).
Name
ProxReporting
ProxIntensity
CapThreshold0 + CapThreshold0 * hysteresis.
CapThreshold0 – CapThreshold0 * hysteresis.
Bits
7:0
7:0
Description
Defines triple or dual mode reporting of proximity on the GPIOs.
0x00: dual mode
0x7F: triple mode (default)
Defines the proximity ON intensity index.
0x00: 0
0x01: 1
…
0x64: 100 (default)
…
0xFF: 255
Low Power, Capacitive Button Touch and Proximity Controller
Table 19
© 2011 Semtech Corp.
Proximity Parameters
52
(8 sensors) with LED Drivers and Analog Output
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SX8661