WM8352 datasheet(172/336 Pages) WOLFSON

172 / 336 page

WM8352

Production Data

PD, February 2011, Rev 4.4

172

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R145 (91h)

Digitiser Control

(2)

13:12

AUXADC_MASK

MODE [1:0]

AUXADC MASK input control

00 = MASK is ignored

01 = When MASK is asserted, all

AUXADC measurements are

inhibited.

10 = Reserved

11 = MASK input initiates AUXADC

measurements. AUXADC_POLL

and AUXADC_CTC have no effect.

MASK polarity is controlled by

GPn_CFG.

10:8

AUXADC_CRAT

E [2:0]

000

AUXADC measurement frequency

in Continuous mode

000 = 1Hz

001 = 4Hz

010 = 8Hz

011 = 16Hz

100 = 32Hz

101 = 64Hz

110 = 128Hz

111 = 256Hz

Table 115 Initiating AUXADC Measurements

In Polling mode, setting AUXADC_POLL = 1 initiates one set of measurements, after which the

AUXADC waits for a new trigger.

In Continuous mode, a set of measurements will be initiated at the frequency set by

AUXADC_CRATE.

When using MASK to initiate measurements (AUXADC_MASKMODE=11), a rising edge (if

GPn_CFG = 1) or a falling edge (if GPn_CFG = 0) initiates one set of AUXADC measurements. The

MASK signal must be asserted for long enough for the AUXADC to perform all the selected

measurements.

The AUXADC_SELn bits should not be changed until all previous measurement results stored in the

AUXn readback registers have been read.

WM8352 Datasheet(PDF) 172 Page - Wolfson Microelectronics plc

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