AK9750 Datasheet, PDF(38/49 Page) Asahi Kasei Microsystems

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AK9750 Datasheet, PDF (38/49 Pages) Asahi Kasei Microsystems – IR Sensor IC with I2C I/F

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[AK9750]

12). EINTEN: Interrupt Source setting (Read / Write Registers)

Address Name D7 D6 D5

1BH EINTEN

IR13HI IR13LI IR24HI IR24LI

DRI

Reset

110

The interrupt to the HOST MCU via the INT output can be obtained by the following methods: INT output

turns to âActiveâ, when at least one of the enabled interrupt source conditions is satisfied. HOST MCU

can identify the interrupt source by reading the Interrupt Source Status (INST).

When DRI and threshold Level interrupt (IR13HI, IR13LI, IR24HI and IR24LI) are simultaneously set to

âEnableâ, the priority is given to threshold level interrupt.

DRI: Data ready interrupt setting

â0â: Interrupt Disable

â1â: Interrupt Enable

Setting DRI bit to â1â enables the interrupt function at the timing of data ready.

IR13HI / IR24HI: Upper threshold level interrupt setting

â0â: Interrupt Disable

â1â: Interrupt Enable

Setting IR13H / IR24HI bit to â1â enables the interrupt function at the timing in which the differential

output (IR1 - IR3 / IR2 - IR4) changes from the level which is below the upper threshold level to the level

which is above the upper threshold level, or at the timing in which the differential output (IR1 - IR3 / IR2 -

IR4) changes from the level which is above âthe upper threshold level - hysteresisâ to the level which is

below âthe upper threshold level - hysteresisâ.

IR13LI / IR24LI: Lower threshold level interrupt setting.

â0â: Interrupt Disable

â1â: Interrupt Enable

Setting IR13LI/IR24LI bit to â1â enables the interrupt function at the timing in which the differential output

(IR1 - IR3 / IR2 - IE4) changes from the level which is above the lower threshold level to the level which

is below the lower threshold level, or at the timing in which the differential output (IR1 - IR3 / IR2 - IR4)

changes from the level which is below âthe lower threshold level +hysteresisâ to the level which is above

âthe lower threshold level +hysteresis.

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