WM9713LGEFLSLASHV datasheet(43/108 Pages) WOLFSON

43 / 108 page

Pre-Production

WM9713L

PP Rev 3.0 June 2006

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

4:2

MCDTHR

000

Mic current detect threshold

000:100uA

001:200uA

….100uA steps up to

111:800uA

These values are for 3.3V supply and scale

with supply voltage (AVDD).

22h

1:0

MCDSCTR

Mic current detect short circuit threshold

00: 600uA

01: 1200uA

10: 1800uA

11: 2400uA

These values are for 3.3V supply and scale

with supply voltage (AVDD).

Table 25 Microphone Current Detect Control

MICROPHONE PGAS

The microphone pre-amps MPA and MPB drive into two microphone PGAs whose gain is controlled

by register 0Eh. The PGA signals can be routed into the headphone mixers and the mono mixer, but

not the speaker mixer (to prevent forming a feedback loop) controlled by register 10h. When the PGA

signals are not selected as an input to any of the mixers the outputs of the PGAs are muted

automatically.

When not in use the microphone PGAs can be powered down using the Powerdown register bits MA

and MB (register 3Eh, bits [3:2]).

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

12:8

MICAVOL

01000

(0dB)

MICA input gain

00000: +12dB

… (1.5dB steps)

11111: -34.5dB

0Eh

Mic PGA

Volume

4:0

MICBVOL

01000

(0dB)

MICB input gain

00000: +12dB

… (1.5dB steps)

11111: -34.5dB

Table 26 Microphone PGA Volume Control

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

MA2M

Mute MICA path to mono mixer

1: Mute, 0: No mute (ON)

MB2M

Mute MICB path to mono mixer

1: Mute, 0: No mute (ON)

MIC2MBST

Mic to mono mixer boost

0: 0dB, 1: +20dB

4:3

MIC2H

Mic to headphone mixers select

00: Stereo (MICA to HPL, MICB to HPR)

01: MICA only (MICA to HPL and HPR)

10: MICB only (MICB to HPL and HPR)

11: none (mutes microphone PGAs)

10h

MIC Routing

2:0

MIC2HVOL

010

(0dB)

Mic PGA to headphone mixers gain

000: +6dB

… (3dB steps)

111: -15dB

Table 27 Microphone PGA Routing Control

WM9713LGEFL/V Datasheet(PDF) 43 Page - Wolfson Microelectronics plc

WM9713LGEFL/V Datasheet(HTML) 43 Page - Wolfson Microelectronics plc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL