WM8321 datasheet(102/253 Pages) WOLFSON

102 / 253 page

WM8321

Production Data

PD, February 2012, Rev 4.0

102

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

4 = Reserved

5 = Chip Temperature

6 = Reserved

7 = PVDD voltage

DCMP4_GT

Digital Comparator 4 interrupt control

0 = interrupt when less than

threshold

1 = interrupt when greater than or

equal to threshold

11:0

DCMP4_THR

000h

Digital Comparator 4 threshold

(12-bit unsigned binary number;

coding is the same as AUX_DATA)

Table 47 AUXADC Digital Comparator Control

18.5 AUXADC INTERRUPTS

The AUXADC is associated with a number of Interrupt event flags to indicate when new AUXADC

data is ready, or to indicate that one or more of the digital comparator thresholds has been crossed.

Each of these secondary interrupts triggers a primary AUXADC Interrupt, AUXADC_INT (see

Section 23). This can be masked by setting the mask bit(s) as described in Table 48.

Note that AUXADC_DATA_EINT is not cleared by reading the measured AUXADC data, it can only

be cleared by writing ‘1’ to the AUXADC_DATA_EINT register.

The AUXADC interrupts can be programmed using bits in Table 48.

ADDRESS

BIT

LABEL

DESCRIPTION

R16401

(4011h)

Interrupt Status

AUXADC_DATA_EINT

AUXADC Data Ready interrupt

(Rising Edge triggered)

Note: Cleared when a ‘1’ is written.

7:4

AUXADC_DCOMPn_EINT

AUXADC Digital Comparator n interrupt

(Trigger is controlled by DCMPn_GT)

Note: Cleared when a ‘1’ is written.

R16409

(4019h)

Interrupt Status

1 Mask

IM_AUXADC_DATA_EINT

Interrupt mask.

0 = Do not mask interrupt.

1 = Mask interrupt.

Default value is 1 (masked)

7:4

IM_AUXADC_DCOMPn_EI

Interrupt mask.

0 = Do not mask interrupt.

1 = Mask interrupt.

Default value is 1 (masked)

Note: n

is a number between 1 and 4 that identifies the individual Comparator.

Table 48 AUXADC Interrupts

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