sx8639 Semtech Corporation, sx8639 Datasheet - Page 59

• 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
5.7 GPIO Parameters
Revision 7_8, September 10
GPIO Parameters
Address
0x40
0x41
0x42
0x43
0x44
0x45
0x46
0x47
Name
GpioMode7_4
GpioMode3_0
GpioOutPwrUp
GpioAutoLight
GpioPolarity
GpioIntensityOn0
GpioIntensityOn1
GpioIntensityOn2
Bits Description
7:6 GPIO[7] Mode
5:4 GPIO[6] Mode
3:2 GPIO[5] Mode
1:0 GPIO[4] Mode
7:6 GPIO[3] Mode
5:4 GPIO[2] Mode
3:2 GPIO[1] Mode
1:0 GPIO[0] Mode
7:0
7:0
7:0
7:0 ON Intensity Index
GPIO[7] Output Value at Power Up
GPIO[6] Output Value at Power Up
GPIO[5] Output Value at Power Up
GPIO[4] Output Value at Power Up
GPIO[3] Output Value at Power Up
GPIO[2] Output Value at Power Up
GPIO[1] Output Value at Power Up
GPIO[0] Output Value at Power Up
GPIO[7] AutoLight
GPIO[6] AutoLight
GPIO[5] AutoLight
GPIO[4] AutoLight
GPIO[3] AutoLight
GPIO[2] AutoLight
GPIO[1] AutoLight
GPIO[0] AutoLight
GPIO[7] Output Polarity
GPIO[6] Output Polarity
GPIO[5] Output Polarity
GPIO[4] Output Polarity
GPIO[3] Output Polarity
GPIO[2] Output Polarity
GPIO[1] Output Polarity
GPIO[0] Output Polarity
(8 sensors) with Enhanced LED Drivers and Proximity Sensing
© 2010 Semtech Corp.
Low Power, Capacitive Button and Wheel Touch Controller
59
Defines the GPIO mode.
00: GPO (default)
01: GPP
10: GPI
11: Reserved
Defines the values of GPO and GPP pins
after power up ie default values of I2C
parameters GpoCtrl and GppIntensity
respectively.
0: OFF(GPO) / IntensityOff (GPP) (default)
1: ON (GPO) / IntensityOn (GPP)
Bits corresponding to GPO pins with
Autolight ON should be left to 0.
Before being actually initialized GPIOs are
set as inputs with pull up.
Enables Autolight in GPO mode
0 : OFF
1 : ON (default)
Defines the polarity of the GPO and GPP
pins.
0: Inverted (default)
1: Normal
Defines the ON intensity index
0x00: 0
0x01: 1
DATASHEET
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SX8639