sx8639 Semtech Corporation, sx8639 Datasheet - Page 60

• Manufacturer Part Number: sx8639
• Description: Low Power, Capacitive Button And Wheel Touch Controller 8 Sensors With Enhanced Led Drivers And Proximity Sensing
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
Revision 7_8, September 10
GPIO Parameters
Address
0x48
0x49
0x4A
0x4B
0x4C
0x4D
0x4E
0x4F
0x50
0x51
0x52
0x53
0x54
0x56
0x57
0x58
0x59
Name
GpioIntensityOn3
GpioIntensityOn4
GpioIntensityOn5
GpioIntensityOn6
GpioIntensityOn7
GpioIntensityOff0
GpioIntensityOff1
GpioIntensityOff2
GpioIntensityOff3
GpioIntensityOff4
GpioIntensityOff5
GpioIntensityOff6
GpioIntensityOff7
GpioFunction
GpioIncFactor
GpioDecFactor
GpioIncTime7_6
Bits Description
7:0 OFF Intensity Index
7:0
7:0
7:0
7:4 GPIO[7] Fading Increment Time
GPIO[7] Function
GPIO[6] Function
GPIO[5] Function
GPIO[4] Function
GPIO[3] Function
GPIO[2] Function
GPIO[1] Function
GPIO[0] Function
GPIO[7] Fading Increment Factor
GPIO[6] Fading Increment Factor
GPIO[5] Fading Increment Factor
GPIO[4] Fading Increment Factor
GPIO[3] Fading Increment Factor
GPIO[2] Fading Increment Factor
GPIO[1] Fading Increment Factor
GPIO[0] Fading Increment Factor
GPIO[7] Fading Decrement Factor
GPIO[6] Fading Decrement Factor
GPIO[5] Fading Decrement Factor
GPIO[4] Fading Decrement Factor
GPIO[3] Fading Decrement Factor
GPIO[2] Fading Decrement Factor
GPIO[1] Fading Decrement Factor
GPIO[0] Fading Decrement Factor
(8 sensors) with Enhanced LED Drivers and Proximity Sensing
© 2010 Semtech Corp.
Low Power, Capacitive Button and Wheel Touch Controller
60
…
0xFF: 255 (default)
Defines the OFF intensity index
0x00: 0 (default)
0x01: 1
…
0xFF: 255
Defines the intensity index vs PWM pulse
width function.
0: Logarithmic (default)
1: Linear
Defines the fading increment factor.
0: 1, intensity index incremented every
increment time (default)
1: 16, intensity index incremented every 16
increment times
Defines the fading decrement factor.
0: 1, intensity index decremented every
decrement time (default)
1: 16, intensity index decremented every 16
decrement times
Defines the fading increment time.
DATASHEET
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SX8639