WM8950 datasheet(26/52 Pages) WOLFSON

Il numero della parte	WM8950

Spiegazioni elettronici	ADC WITH MICROPHONE INPUT AND PROGRAMMABLE DIGITAL FILTERS

PDF	52 Pages

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Produttore elettronici	WOLFSON [Wolfson Microelectronics plc]

Homepage	http://www.wolfsonmicro.com

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WM8950

Preliminary Technical Data

PTD Rev 2.1 June 2005

The equaliser consists of low and high frequency shelving filters (Band 1 and 5) and three peak

filters for the centre bands. Each has adjustable cut-off or centre frequency, and selectable boost

(+/- 12dB in 1dB steps). The peak filters have selectable bandwidth.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

4:0

EQ1G

01100

(0dB)

Band 1 Gain Control. See Table 22 for

details.

R18

EQ Band 1

Control

6:5

EQ1C

Band 1 Cut-off Frequency:

00=80Hz

01=105Hz

10=135Hz

11=175Hz

Table 17 EQ Band 1 Control

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

4:0

EQ2G

01100

(0dB)

Band 2 Gain Control. See Table 22 for

details.

6:5

EQ2C

Band 2 Centre Frequency:

00=230Hz

01=300Hz

10=385Hz

11=500Hz

R19

EQ Band 2

Control

EQ2BW

Band 2 Bandwidth Control

0=narrow bandwidth

1=wide bandwidth

Table 18 EQ Band 2 Control

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

4:0

EQ3G

01100

(0dB)

Band 3 Gain Control. See Table 22 for

details.

6:5

EQ3C

Band 3 Centre Frequency:

00=650Hz

01=850Hz

10=1.1kHz

11=1.4kHz

R20

EQ Band 3

Control

EQ3BW

Band 3 Bandwidth Control

0=narrow bandwidth

1=wide bandwidth

Table 19 EQ Band 3 Control

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