CS48L32 datasheet(88/192 Pages) CIRRUS

88 / 192 page

Cirrus Logic

DS1219F4

CS48L32

4.5 DSP Peripheral Control

base address + 0x40

ALMn_CONFIG2

4ALMn_CH2_CONT

Channel 2 continuous mode select

0 = Single mode

1 = Continuous mode

Channel 2 must be disabled (ALMn_CH2_STS = 0) when updating this

field.

1:0

ALMn_CH2_TRIG_

MODE[1:0]

Channel 2 trigger mode select

00 = Absolute Mode: Alarm is triggered when the count value of the timer

source is equal to ALMn_CH2_TRIG_VAL.

01 = Relative Mode: Alarm is triggered when the count value has

incremented by a number equal to ALMn_CH2_TRIG_VAL.

10 = Combination Mode: Alarm is initially triggered as described for

Absolute Mode; the alarm then operates as described for Relative Mode.

11 = Reserved

Channel 2 must be disabled (ALMn_CH2_STS = 0) when updating this

field.

base address + 0x44

ALMn_CTRL2

ALMn_CH2_UPD

Channel 2 update control—Write 1 to indicate a new trigger value or pulse

duration is ready to be applied.

If Channel 2 is enabled and ALMn_CH2_UPD is set, the ALMn_CH2_

TRIG_VAL and ALMn_CH2_PULSE_DUR settings are updated when the

alarm is next triggered or by writing 1 to ALMn_CH2_START.

If Channel 2 is disabled, the ALMn_CH2_UPD bit has no effect, and the

ALMn_CH2_TRIG_VAL and ALMn_CH2_PULSE_DUR settings are

updated immediately when writing to the respective fields.

4ALMn_CH2_STOP

—

Channel 2 stop control—Write 1 to disable Channel 2

0ALMn_CH2_START

—

Channel 2 start control—Write 1 to enable or restart Channel 2

base address + 0x48

ALMn_TRIG_VAL2

31:0 ALMn_CH2_TRIG_

VAL[31:0]

0x0000_

0000

Channel 2 alarm trigger value

base address + 0x4C

ALMn_PULSE_DUR2

31:0 ALMn_CH2_

PULSE_DUR[31:0]

0x0000_

0000

Channel 2 alarm output pulse duration

Configures the duration of the GPIO alarm output indication. The pulse

duration is referenced to the count rate of the selected timer source.

base address + 0x50

ALMn_STATUS2

0ALMn_CH2_STS

Channel 2 status

0 = Disabled

1 = Enabled

base address + 0x60

ALMn_CONFIG3

4ALMn_CH3_CONT

Channel 3 continuous mode select

0 = Single mode

1 = Continuous mode

Channel 3 must be disabled (ALMn_CH3_STS = 0) when updating this

field.

1:0

ALMn_CH3_TRIG_

MODE[1:0]

Channel 3 trigger mode select

00 = Absolute Mode: Alarm is triggered when the count value of the timer

source is equal to ALMn_CH3_TRIG_VAL.

01 = Relative Mode: Alarm is triggered when the count value has

incremented by a number equal to ALMn_CH3_TRIG_VAL.

10 = Combination Mode: Alarm is initially triggered as described for

Absolute Mode; the alarm then operates as described for Relative Mode.

11 = Reserved

Channel 3 must be disabled (ALMn_CH3_STS = 0) when updating this

field.

base address + 0x64

ALMn_CTRL3

ALMn_CH3_UPD

Channel 3 update control—Write 1 to indicate a new trigger value or pulse

duration is ready to be applied.

If Channel 3 is enabled and ALMn_CH3_UPD is set, the ALMn_CH3_

TRIG_VAL and ALMn_CH3_PULSE_DUR settings are updated when the

alarm is next triggered or by writing 1 to ALMn_CH3_START.

If Channel 3 is disabled, the ALMn_CH3_UPD bit has no effect, and the

ALMn_CH3_TRIG_VAL and ALMn_CH3_PULSE_DUR settings are

updated immediately when writing to the respective fields.

4ALMn_CH3_STOP

—

Channel 3 stop control—Write 1 to disable Channel 3

0ALMn_CH3_START

—

Channel 3 start control—Write 1 to enable or restart Channel 3

base address + 0x68

ALMn_TRIG_VAL3

31:0 ALMn_CH3_TRIG_

VAL[31:0]

0x0000_

0000

Channel 3 alarm trigger value

Table 4-31. Alarm (ALMn) Control (Cont.)

Bit

Label

Default

Description

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