CAP1114 datasheet(83/102 Pages) MICROCHIP

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Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

SMSC CAP1114

Revision 1.1 (02-04-11)

DATASHEET

6.46.2

LED Mirror Control 2 - 7Ah

Bit 2 - LED11_MIR_EN - Determines whether the duty cycle settings are “biased” relative to 0% or

100% duty cycle.

Bit 1 - LED10_MIR_EN - Determines whether the duty cycle settings are “biased” relative to 0% or

100% duty cycle.

Bit 0 - LED9_MIR_EN - Determines whether the duty cycle settings are “biased” relative to 0% or 100%

duty cycle.

6.47

Sensor LED Linking Register

The Sensor LED Linking Register controls whether a Capacitive Touch Sensor is linked to an LED

output or not. If the corresponding bit is set, the appropriate LED output will change states defined by

the LED Behavior controls (see Section ) in response to the Capacitive Touch sensor.

If the LED channel is configured as an input, the corresponding Sensor LED Linking bit is ignored.

Bit 7 - UP_DOWN_LINK - Links the LED10 output to a detected UP condition on the group including

a slide in the “up” direction, a tap on the “up” side of the group or a press and hold condition on the

“up” side of the group. The LED10 driver will be actuated and will behave as determined by the

LED10_CTL bits. This bit also links the LED9 output to a detected DOWN condition on the group

including a slide in the “down” direction, a tap on the “down” side of the group or a press and hold

condition on the “down” side of the group. The LED9 driver will be actuated and will behave as

determined by the LED9_CTL bits.

LED9 and LED10 will not be active simultaneously. If LED9 is actuated by detecting a slide, tap, or

press and hold event, LED10 will be inactive. Likewise, if LED10 is actuated by detecting a slide, tap,

or press and hold event, LED9 will be inactive.

Bit 6 - CS7_LED7 - Links the LED7 output to a detected touch on the CS7 sensor. When a touch is

detected, the LED is actuated and will behave as determined by the LED Behavior controls.

‘0’ - The LED7 output is not associated with the CS7 input. If a touch is detected on the CS7 input,

the LED will not automatically be actuated. The LED is enabled and controlled via the LED Output

Configuration register (see Section 6.43) and the LED Behavior registers (see Section ).

‘1’ - The LED 7 output is associated with the CS7 input. If a touch is detected on the CS7 input,

the LED will be actuated and behave as defined in Table 6.69. Furthermore, the LED will

automatically be enabled.

Bit 5 - CS6_LED6 - Links the LED6 output to a detected touch on the CS6 sensor. When a touch is

detected, the LED is actuated and will behave as determined by the LED Behavior controls.

Bit 4 - CS5_LED5 - Links the LED5 output to a detected touch on the CS5 sensor. When a touch is

detected, the LED is actuated and will behave as determined by the LED Behavior controls.

Bit 4 - CS4_LED4 - Links the LED4 output to a detected touch on the CS4 sensor. When a touch is

detected, the LED is actuated and will behave as determined by the LED Behavior controls.

Bit 2 - CS3_LED3 - Links the LED3 output to a detected touch on the CS3 sensor. When a touch is

detected, the LED is actuated and will behave as determined by the LED Behavior controls.

Table 6.67 Sensor LED Linking Register

ADDR

R/W

B6B5B4

B2B1B0

DEFAULT

80h

R/W

Sensor LED

Linking

UP_

DOWN _

LINK

CS7_

LED7

CS6_

LED6

CS5_

LED5

CS4_

LED4

CS3_

LED3

CS2_

LED2

CS1_

LED1

00h

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