MPL3115A2

Sensors

34

Freescale Semiconductor, Inc.

7.17.3 CTRL_REG3 (Interrupt CTRL Register) (0x28)

7.17.4 CTRL_REG4 [Interrupt Enable Register] (0x29)

The corresponding functional block interrupt enable bit allows the functional block to route its event detection flags to the sys-

tem’s interrupt controller. The interrupt controller routes the enabled functional block interrupt to the INT1 or INT2 pin.

Table 62. CTRL_REG3 Register

7

6

5

43

210

R0

IPOL1

PP_OD1

0

IPOL2

PP_OD2

W

Reset

0

0

0

00

000

Table 63. CTRL_REG3 Description

Name

Description

IPOL1

The IPOL bit selects the polarity of the interrupt signal. When IPOL is ‘0’ (default value) any interrupt event will signalled

with a logical ‘0'. Interrupt Polarity active high, or active low on interrupt pad INT1.

Default value: 0

0: Active low

1: Active high

PP_OD1

This bit configures the interrupt pin to Push-Pull or in Open Drain mode. The default value is 0 which corresponds to

Push-Pull mode. The open drain configuration can be used for connecting multiple interrupt signals on the same interrupt

line. Push-Pull/Open Drain selection on interrupt pad INT1.

Default value: 0

0: Internal Pullup

1: Open drain

IPOL2

Interrupt Polarity active high, or active low on interrupt pad INT2.

Default value: 0

0: Active low

1: Active high

PP_OD2

Push-Pull/Open Drain selection on interrupt pad INT2.

Default value: 0

0: Internal Pull-up

1: Open drain

Table 64. CTRL_REG4 Register

7

6

5

4

3

2

1

0

R

INT_EN_DRDY

INT_EN _FIFO

INT_EN_PW INT_EN_TW INT_EN_PTH INT_EN_TTH INT_EN_PCHG INT_EN_TCHG

W

Reset

0

0

0

0

0

0

0

0

Table 65. Interrupt Enable Register Description

Interrupt Enable

Description

INT_EN_DRDY

Interrupt Enable.

Default value: 0

0: Data Ready interrupt disabled

1: Data Ready interrupt enabled

INT_EN_FIFO

Interrupt Enable.

Default value: 0

0: FIFO interrupt disabled

1: FIFO interrupt enabled

INT_EN_PW

Interrupt Enable.

Default value: 0

0: Pressure window interrupt disabled

1: Pressure window interrupt enabled