CS44800 datasheet(65/80 Pages) CIRRUS

65 / 80 page

DS632F1

CS44800

7.22.2

SRC Lock Interrupt (SRC_LOCK)

Default = 0

Function:

When high, indicates that on all active channels, the sample rate converters have achieved lock. This

interrupt is an edge-triggered event.

If this bit is set to a 1b, indicating a lock condition, and an SRC_UNLOCK condition is detected, then this

bit will be reset to 0b before a read of the Interrupt Status Register. Only the last valid state of the SRC

will be reported.

7.22.3

Ramp-Up Complete Interrupt (RMPUP_DONE)

Default = 0

Function:

When high, indicates that all active channels have completed the configured ramp-up interval.

7.22.4

Ramp-Down Complete Interrupt (RMPDN_DONE)

Default = 0

Function:

When high, indicates that all active channels have completed the configured ramp-down interval.

7.22.5

Mute Complete Interrupt (Mute_DONE)

Default = 0

Function:

When high, indicates that all muted channels have completed the mute cycle-down interval as defined by

the SZC[1:0] bits in the “Volume Control Configuration (address 06h)” on page 55.

7.22.6

Channel Over Flow Interrupt (OVFL_INT)

Default = 0

Function:

When high, indicates that the magnitude of an output sample on one of the channels has exceeded full

scale and has been clipped to positive or negative full scale as appropriate. This bit is the logical OR of

all the bits in the Channel Over Flow Status Register. Read the Channel Over Flow Status Register to

determine which channel(s) had the overflow condition.

7.22.7

GPIO Interrupt Condition (GPIO_INT)

Default = 0

Function:

When high, indicates that a transition as configured on one of the un-masked GPIO pins has occurred.

This bit is the logical OR of all the supported un-masked bits in the GPIO Status Register. Read the GPIO

Status Register to determine which GPIO input(s) caused the interrupt condition. The GPIO interrupt is

not removed by reading this register. The GPIO Status Register must be read to clear this interrupt. If the

GPIO input is configured as “edge trigger” the interrupt will clear. If the GPIO input is configured as “level

sensitive”, the interrupt condition will remain as long as the GPIO input remains at the active level.

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