WM1811A datasheet(298/328 Pages) WOLFSON

298 / 328 page

WM1811A

Production Data

PD, November 2013, Rev 4.1

298

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R1569

(0621h)

Sidetone

9:7

ST_HPF_CUT

[2:0]

000

Sidetone HPF cut-off frequency (relative to 44.1kHz sample rate)

000 = 2.7kHz

001 = 1.35kHz

010 = 675Hz

011 = 370Hz

100 = 180Hz

101 = 90Hz

110 = 45Hz

111 = Reserved

Note - the cut-off frequencies scale with the Digital Mixing (SYSCLK) clocking

rate. The quoted figures apply to 44.1kHz sample rate.

ST_HPF

Digital Sidetone HPF Select

0 = Disabled

1 = Enabled

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R1792

(0700h)

GPIO 1

GP1_DIR

GPIO1 Pin Direction

0 = Output

1 = Input

GP1_PU

GPIO1 Pull-Up Enable

0 = Disabled

1 = Enabled

GP1_PD

GPIO1 Pull-Down Enable

0 = Disabled

1 = Enabled

GP1_POL

GPIO1 Polarity Select

0 = Non-inverted (Active High)

1 = Inverted (Active Low)

GP1_OP_CFG

GPIO1 Output Configuration

0 = CMOS

1 = Open Drain

GP1_DB

GPIO1 Input De-bounce

0 = Disabled

1 = Enabled

GP1_LVL

GPIO1 level. Write to this bit to set a GPIO output. Read from this bit to read

GPIO input level.

For output functions only, when GP1_POL is set, the register contains the

opposite logic level to the external pin.

4:0

GP1_FN [4:0]

0_0000

GPIO1 Pin Function

00h = ADCLRCLK1

01h = GPIO

02h = Reserved

03h = IRQ

04h = Temperature (Shutdown) status

05h = MICDET status

06h = Reserved

07h = Reserved

08h = Reserved

09h = FLL1 Lock

WM1811A Datasheet(PDF) 298 Page - Wolfson Microelectronics plc

WM1811A Datasheet(HTML) 298 Page - Wolfson Microelectronics plc

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