CAP1126 datasheet(43/73 Pages) MICROCHIP

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DS00001623B-page 43

CAP1126

Bit 5 - CS6_PTRN - Determines whether CS6 is considered as part of the Multiple Touch Pattern.

• ‘0’ - CS6 is not considered a part of the pattern.

• ‘1’ - CS6 is considered a part of the pattern or the absolute number of sensor inputs that must have a delta count

greater than the MTP threshold or have the Noise Flag Status bit set is increased by 1.

Bit 4 - CS5_PTRN - Determines whether CS5 is considered as part of the Multiple Touch Pattern.

Bit 3 - CS4_PTRN - Determines whether CS4 is considered as part of the Multiple Touch Pattern.

Bit 2 - CS3_PTRN - Determines whether CS3 is considered as part of the Multiple Touch Pattern.

Bit 1 - CS2_PTRN - Determines whether CS2 is considered as part of the Multiple Touch Pattern.

Bit 0 - CS1_PTRN - Determines whether CS1 is considered as part of the Multiple Touch Pattern.

6.17

Recalibration Configuration Register

The Recalibration Configuration register controls the automatic re-calibration routine settings as well as advanced con-

trols to program the Sensor Input Threshold register settings.

Bit 7 - BUT_LD_TH - Enables setting all Sensor Input Threshold registers by writing to the Sensor Input 1 Threshold

• ‘0’ - Each Sensor Input X Threshold register is updated individually.

• ‘1’ (default) - Writing the Sensor Input 1 Threshold register will automatically overwrite the Sensor Input Threshold

registers for all sensor inputs (Sensor Input Threshold 1 through Sensor Input Threshold 6). The individual Sensor

Input X Threshold registers (Sensor Input 2 Threshold through Sensor Input 6 Threshold) can be individually

updated at any time.

Bit 6 - NO_CLR_INTD - Controls whether the accumulation of intermediate data is cleared if the noise status bit is set.

• ‘0’ (default) - The accumulation of intermediate data is cleared if the noise status bit is set.

• ‘1’ - The accumulation of intermediate data is not cleared if the noise status bit is set.

APPLICATION NOTE: Bits 5 and 6 should both be set to the same value. Either both should be set to ‘0’ or both

should be set to ‘1’.

Bit 5 - NO_CLR_NEG - Controls whether the consecutive negative delta counts counter is cleared if the noise status bit

is set.

• ‘0’ (default) - The consecutive negative delta counts counter is cleared if the noise status bit is set.

• ‘1’ - The consecutive negative delta counts counter is not cleared if the noise status bit is set.

Bits 4 - 3 - NEG_DELTA_CNT[1:0] - Determines the number of negative delta counts necessary to trigger a digital re-

calibration as shown in Table 6-30.

TABLE 6-29:

RECALIBRATION CONFIGURATION REGISTERS

ADDR

R/W

Default

2Fh

R/W

Recalibration

Configuration

BUT_

LD_TH

NO_

CLR_

INTD

NO_

CLR_

NEG

NEG_DELTA_

CNT[1:0]

CAL_CFG[2:0]

8Ah

TABLE 6-30:

NEG_DELTA_CNT BIT DECODE

NEG_DELTA_CNT[1:0]

Number of Consecutive Negative Delta Count Values

16 (default)

None (disabled)

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