CAP1206 datasheet(35/63 Pages) MICROCHIP

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DS00001567B-page 35

CAP1206

5.11

Interrupt Enable Register

The Interrupt Enable register determines whether a sensor pad touch or release (if enabled) causes an interrupt (see

Section 4.8, "Interrupts").

For all bits in this register:

• ‘0’ - The ALERT# pin will not be asserted if a touch is detected on the specified sensor input.

• ‘1’ (default) - The ALERT# pin will be asserted if a touch is detected on the specified sensor input.

Bit 5 - CS6_INT_EN - Enables the ALERT# pin to be asserted if a touch is detected on CS6 (associated with the CS6

status bit).

Bit 4 - CS5_INT_EN - Enables the ALERT# pin to be asserted if a touch is detected on CS5 (associated with the CS5

status bit).

Bit 3 - CS4_INT_EN - Enables the ALERT# pin to be asserted if a touch is detected on CS4 (associated with the CS4

status bit).

Bit 2 - CS3_INT_EN - Enables the ALERT# pin to be asserted if a touch is detected on CS3 (associated with the CS3

status bit).

Bit 1 - CS2_INT_EN - Enables the ALERT# pin to be asserted if a touch is detected on CS2 (associated with the CS2

status bit).

Bit 0 - CS1_INT_EN - Enables the ALERT# pin to be asserted if a touch is detected on CS1 (associated with the CS1

status bit).

5.12

Repeat Rate Enable Register

The Repeat Rate Enable register enables the repeat rate of the sensor inputs as described in Section 4.8.2, "Capacitive

Sensor Input Interrupt Behavior".

For all bits in this register:

• ‘0’ - The repeat rate for the specified sensor input is disabled. It will only generate an interrupt when a touch is

detected and when a release is detected (if enabled) no matter how long the touch is held.

• ‘1’ (default) - The repeat rate for the specified sensor input is enabled. In the case of a “touch” event, it will gener-

ate an interrupt when a touch is detected and a release is detected (as determined by the INT_REL_n bit - see

Section 5.6, "Configuration Registers"). In the case of a “press and hold” event, it will generate an interrupt when a

touch is detected and at the repeat rate so long as the touch is held.

Bit 5 - CS6_RPT_EN - Enables the repeat rate for capacitive touch sensor input 6.

Bit 4 - CS5_RPT_EN - Enables the repeat rate for capacitive touch sensor input 5.

Bit 3 - CS4_RPT_EN - Enables the repeat rate for capacitive touch sensor input 4.

Bit 2 - CS3_RPT_EN - Enables the repeat rate for capacitive touch sensor input 3.

Bit 1 - CS2_RPT_EN - Enables the repeat rate for capacitive touch sensor input 2.

TABLE 5-21:

INTERRUPT ENABLE REGISTER

Addr

R/W

B4B3B2B1B0

Default

27h

R/W

Interrupt

Enable

CS6_

INT_EN

CS5_

INT_EN

CS4_

INT_EN

CS3_

INT_EN

CS2_

INT_EN

CS1_

INT_EN

3Fh

TABLE 5-22:

REPEAT RATE ENABLE REGISTER

Addr

R/W

B4B3B2B1

Default

28h

R/W

Repeat Rate

Enable

CS6_

RPT_EN

CS5_

RPT_EN

CS4_

RPT_EN

CS3_

RPT_EN

CS2_

RPT_EN

CS1_

RPT_EN

3Fh

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