sx8644 Semtech Corporation, sx8644 Datasheet - Page 61

• Manufacturer Part Number: sx8644
• Description: Ultra Low Power, Capacitive Button And Slider Touch Controller 12 Sensors With Enhanced Led Drivers
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
Table 23 resumes the applicable SPM and I2C parameters for each GPIO mode.
Revision 7_3, January 10
GPIO Parameters
Address
0x69
1
corresponding bits value.
2
3
SPM
At power up, GppIntensity of each GPP pin is initialized with GpioIntensityOn or GpioIntensityOff depending on GpioOutPwrUp
Only if Autolight is OFF, else must be left to 0 (default value)
Only if Autolight is OFF, else ignored
I2C
Name
GpioDebounce
GpioPullUpDown
GpioIntensityOn
GpioIntensityOff
GpioOutPwrUp
GpioDecFactor
GpioDebounce
GpioIncFactor
GpioDecTime
GpioAutoligth
GpioFunction
GpioOffDelay
GpioInterrupt
GpioIncTime
GppIntensity
GpioPolarity
GpioMode
GppPinId
IrqSrc[4]
GpoCtrl
GpiStat
Table 23
Bits Description
1:0 GPI[0] Interrupt
7:0
Applicable SPM/I2C Parameters vs. GPIO Mode
GPI[7] Debounce
GPI[6] Debounce
GPI[5] Debounce
GPI[4] Debounce
GPI[3] Debounce
GPI[2] Debounce
GPI[1] Debounce
GPI[0] Debounce
Table 22
Touch Controller (12 sensors) with Enhanced LED Drivers
© 2009 Semtech Corp.
GPI
GPIO Parameters
X
X
X
X
X
X
61
Ultra Low Power, Capacitive Button and Slider
GPP
X
X
X
X
X
X
X
X
Enables the GPI debounce (done on 10
consecutive samples at 1ms).
0 : OFF (default)
1 : ON
1
1
1
1
GPO
X
X
X
X
X
X
X
X
X
X
X
X
X
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2
3
SX8644