CAP1296 datasheet(39/68 Pages) MICROCHIP

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DS00001569B-page 39

CAP1296

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 4.9.2, "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.

Bit 0 - CS1_RPT_EN - Enables the repeat rate for capacitive touch sensor input 1.

5.13

Signal Guard Enable Register

The Signal Guard Enable register enables the signal guard for the specified sensor inputs as described in Section 4.5.1,

"Signal Guard". When the signal guard is enabled, CS3 is disabled.

For all bits in this register:

• ‘0’ (default) - The signal guard is disabled for the specified sensor input.

• ‘1’ - The signal guard is enabled for the specified sensor input.

Bit 5 - CS6_SG_EN - Enables the signal guard for capacitive touch sensor input 6.

Bit 4 - CS5_SG_EN - Enables the signal guard for capacitive touch sensor input 5.

Bit 3 - CS4_SG_EN - Enables the signal guard for capacitive touch sensor input 4.

Bit 1 - CS2_SG_EN - Enables the signal guard for capacitive touch sensor input 2.

Bit 0 - CS1_SG_EN - Enables the signal guard for capacitive touch sensor input 1.

TABLE 5-24:

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

TABLE 5-25:

SIGNAL GUARD ENABLE REGISTER

Addr

R/W

B4B3B2B1

Default

29h

R/W

Signal

Guard

Enable

CS6_

SG_EN

CS5_

SG_EN

CS4_

SG_EN

CS2_

SG_EN

CS1_

SG_EN

00h

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