SX8663 datasheet(49/64 Pages) SEMTECH

49 / 64 page

ADVANCED COMMUNICATIONS & SENSING

Rev5 4

th August 2011

www.semtech.com

SX8663

Capacitive Button Matrix (up to 36) and Proximity Controller

with Individual LED Drivers and Buzzer Output

GPIO Parameters

Address

Name

Bits Description

0: Logarithmic (default)

1: Linear

0x5A

GpioIncFactor

7:0

Defines the fading increment factor.

0: intensity index incremented every increment time (default)

1: intensity index incremented every 16 increment times

0x5B

GpioDecFactor

7:0

Defines the fading decrement factor.

0: intensity index decremented every decrement time (default)

1: intensity index decremented every 16 decrement times

7:4

GPIO[7] Fading Increment Time

0x5C

GpioIncTime7_6

3:0

GPIO[6] Fading Increment Time

7:4

GPIO[5] Fading Increment Time

0x5D

GpioIncTime5_4

3:0

GPIO[4] Fading Increment Time

7:4

GPIO[3] Fading Increment Time

0x5E

GpioIncTime3_2

3:0

GPIO[2] Fading Increment Time

7:4

GPIO[1] Fading Increment Time

0x5F

GpioIncTime1_0

3:0

GPIO[0] Fading Increment Time

Defines the fading increment time.

0x0: OFF (default)

0x1: 0.5ms

0x2: 1ms

…

0xF: 7.5ms

The total fading in time will be:

GpioIncTime*GpioIncFactor*

(GpioIntensityOn – GpioIntensityOff)

7:4

GPIO[7] Fading Decrement Time

0x60

GpioDecTime7_6

3:0

GPIO[6] Fading Decrement Time

7:4

GPIO[5] Fading Decrement Time

0x61

GpioDecTime5_4

3:0

GPIO[4] Fading Decrement Time

7:4

GPIO[3] Fading Decrement Time

0x62

GpioDecTime3_2

3:0

GPIO[2] Fading Decrement Time

7:4

GPIO[1] Fading Decrement Time

0x63

GpioDecTime1_0

3:0

GPIO[0] Fading Decrement Time

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)

7:4

GPIO[7] OFF Delay

0x64

GpioOffDelay7_6

3:0

GPIO[6] OFF Delay

7:4

GPIO[5] OFF Delay

0x65

GpioOffDelay5_4

3:0

GPIO[4] OFF Delay

7:4

GPIO[3] OFF Delay

0x66

GpioOffDelay3_2

3:0

GPIO[2] OFF Delay

7:4

GPIO[1] OFF Delay

0x67

GpioOffDelay1_0

3:0

GPIO[0] OFF Delay

Defines the delay between release and start

of fading out (single fading)

0x0: instantaneous (default)

0x1: 200 ms

0x2: 400 ms

0x3: 600ms

…

0xA: 2s

0xB: 4s

…

0xF: 12s

0x68

Reserved

7:0

Reserved (0x00)

0x69

Reserved

7:0

Reserved (0x00)

0x6A

Reserved

7:0

Reserved (0x00)

0x6B

Reserved

7:0

Reserved (0x00)

0x6C

Reserved

7:0

Reserved (0x00)

7:6

Fading mode for GPIO[7]

5:4

Fading mode for GPIO[6]

0x6D

GpioFadingMode7_4

3:2

Fading mode for GPIO[5]

Defines the Fading mode for GPO[7:0].

00: Single (default)

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