sx8644 Semtech Corporation, sx8644 Datasheet - Page 68

• 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
6.5 Control Registers
Revision 7_3, January 10
Address Name
Address Name
0x0A
0x09
* The reading of these reserved bits will return varying values.
** After the operating mode change (Active/Doze) the host should wait for INTB or 300ms before
performing any I2C read access.
CompOpMode
GpoCtrl
Table 30
Bits
7:3
2
1:0
Bits
7:0
I2C compensation, operation modes
Description
GpoCtrl[7:0]
Description
Reserved*, write only ‘00000’
Compensation
Operating Mode
Touch Controller (12 sensors) with Enhanced LED Drivers
Table 31
© 2009 Semtech Corp.
I2C GPO Control
68
Ultra Low Power, Capacitive Button and Slider
Indicates/triggers compensation procedure
0: Compensation completed (default)
1: read -> compensation running ; write -> trigger
compensation
Indicates/programs** operating mode
00: Active mode (default)
01: Doze mode
10: Sleep mode
11: Reserved
Triggers ON/OFF state of GPOs when Autolight is
OFF
0: OFF (ie go to IntensityOff)
1: ON (ie go to IntensityOn)
Default is set by SPM parameter GpioOutPwrUp
Bits of non-GPO pins are ignored.
DATASHEET
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SX8644