sx8644 Semtech Corporation, sx8644 Datasheet - Page 60

• 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
Revision 7_3, January 10
GPIO Parameters
Address
0x5A
0x5B
0x5C
0x5D
0x5E
0x5F
0x60
0x61
0x62
0x63
0x64
0x65
0x66
0x67
0x68
Name
GpioIncTime5_4
GpioIncTime3_2
GpioIncTime1_0
GpioDecTime7_6
GpioDecTime5_4
GpioDecTime3_2
GpioDecTime1_0
GpioOffDelay7_6
GpioOffDelay5_4
GpioOffDelay3_2
GpioOffDelay1_0
GpioPullUpDown7_4
GpioPullUpDown3_0
GpioInterrupt7_4
GpioInterrupt3_0
Bits Description
3:0 GPIO[6] Fading Increment Time
7:4 GPIO[5] Fading Increment Time
3:0 GPIO[4] Fading Increment Time
7:4 GPIO[3] Fading Increment Time
3:0 GPIO[2] Fading Increment Time
7:4 GPIO[1] Fading Increment Time
3:0 GPIO[0] Fading Increment Time
7:4 GPIO[7] Fading Decrement Time
3:0 GPIO[6] Fading Decrement Time
7:4 GPIO[5] Fading Decrement Time
3:0 GPIO[4] Fading Decrement Time
7:4 GPIO[3] Fading Decrement Time
3:0 GPIO[2] Fading Decrement Time
7:4 GPIO[1] Fading Decrement Time
3:0 GPIO[0] Fading Decrement Time
7:4 GPIO[7] OFF Delay
3:0 GPIO[6] OFF Delay
7:4 GPIO[5] OFF Delay
3:0 GPIO[4] OFF Delay
7:4 GPIO[3] OFF Delay
3:0 GPIO[2] OFF Delay
7:4 GPIO[1] OFF Delay
3:0 GPIO[0] OFF Delay
7:6 GPIO[7] Pullup/down
5:4 GPIO[6] Pullup/down
3:2 GPIO[5] Pullup/down
1:0 GPIO[4] Pullup/down
7:6 GPIO[3] Pullup/down
5:4 GPIO[2] Pullup/down
3:2 GPIO[1] Pullup/down
1:0 GPIO[0] Pullup/down
7:6 GPI[7] Interrupt
5:4 GPI[6] Interrupt
3:2 GPI[5] Interrupt
1:0 GPI[4] Interrupt
7:6 GPI[3] Interrupt
5:4 GPI[2] Interrupt
3:2 GPI[1] Interrupt
Touch Controller (12 sensors) with Enhanced LED Drivers
© 2009 Semtech Corp.
60
Ultra Low Power, Capacitive Button and Slider
0x0: OFF (default)
0x1: 0.5ms
0x2: 1ms
…
0xF: 7.5ms
The total fading in time will be:
GpioIncTime*GpioIncFactor*
(GpioIntensityOn – GpioIntensityOff)
Defines the fading decrement time.
0x0: OFF
0x1: 0.5ms
0x2: 1ms
…
0x4: 2.0ms (default)
…
0xF: 7.5ms
The total fading out time will be:
GpioDecTime*GpioDecFactor*
(GpioIntensityOn – GpioIntensityOff)
Defines the delay after GPO OFF trigger
before fading out starts.
0x0: OFF (default)
0x1: 200ms
0x2: 400ms
…
0xF: 3000ms
Enables pullup/down resistors for GPI pins.
00 : None (default)
01 : Pullup
10 : Pulldown
11 : Reserved
Defines the GPI edge which will trigger INTB
falling edge and exit Sleep/Doze modes if
relevant.
00 : None (default)
01 : Rising
10 : Falling
11 : Both
DATASHEET
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SX8644