AS7150 datasheet(153/159 Pages) AMSOSRAM

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AS7150

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8.17.7

STATUS (Address 0xFA)

The STATUS register shows the current status of the interface. When released via

IRQ_ENABLE, all bits can trigger an interrupt. Reading the STATUS registers only deletes

irq_iir_overflow, irq_fifooverflow_and irq_sequencer.

To delete irq_prox, the STATUS_PROX register must be read.

To delete irq_vcsel, the STATUS_VCSEL register must be read.

To delete irq_asat, the STATUS_ASAT register must be read.

To delete irq_lowvds, the STATUS_LED register must be read.

To delete irq_sequencer, the STATUS_SEQ register must be read.

The interrupt for the fill level of the FIFO irq_fifothreshold cannot be deleted directly, but only

by lowering the FIFO level.

Table 154: STATUS register

Addr: 0xFA

STATUS

Bit

Bit name

Default

Access

Bit description

irq_prox

This is the proximity interrupt status register.

Please read the STATUS_PROX register for

detailed information about the proximity state.

irq_vcsel

This is the VCSEL interrupt status register.

Please read the STATUS_VCSEL register to get

information about the root cause of the interrupt

which can be a short circuit on one of the LED

inputs or an on time violation.

irq_asat

This is the ADC modulator analog saturation

interrupt register. Please check the

STATUS_ASAT register to find out which of the

modulators ran into saturation.

irq_led_lowvds

This is the LED driver input low voltage detection

interrupt register. Please read STATUS_LED

run into an undervoltage condition.

irq_fifooverflow

This is the FIFO overflow interrupt register. Once

this bit is set a FIFO overflow event occurred and

ADC sampling data got lost.

irq_fifothreshold

This is the FIFO threshold interrupt register. This

interrupt is released one the FIFO level is above

the FIFO level defined in FIFO_THRESHOLD

irq_sequencer

This is the sequencer interrupt register. Please

read out the STATUS_SEQ register to find out

the root cause of the interrupt.

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