LM49350_15 datasheet(73/108 Pages) TI

Part #	LM49350

Description	LM49350 Boomer짰 Audio Power Amplifier Series High Performance Audio Codec Sub-System with a Ground-Referenced Stereo Headphone Amplifier & an Ultra Low EMI Class D Loudspeaker Amplifier with Dual I2S/PCM Digital Audio Interfaces

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Manufacturer	TI [Texas Instruments]

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LM49350, LM49350RLEVAL

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SNAS359D – SEPTEMBER 2008 – REVISED JUNE 2012

Table 62. EQ_BAND_4 (0x8Eh)

Bits

Field

Description

1:0

FREQ

This sets the Treble peak filter's center frequency. The cut-off frequencies shown are based

on a 48kHz sample rate. Using lower sample rates will scale down the cut-off frequencies

proportionately.

FREQ

Frequency (Hz)

00

2k

01

2.7k

10

3.4k

11

4.1k

6:2

LEVEL

This sets the gain at fC.

LEVEL

Effect

00000

Off (0dB)

00001

-15dB

00010

-14dB

00011

-13dB

00100

-12dB

00101

-11dB

00110

-10dB

00111

-9dB

01000

-8dB

01001

-7dB

01010

-6dB

01011

-5dB

01100

-4dB

01101

-3dB

01110

-2dB

01111

-1dB

10000

0dB

10001

1dB

10010

2dB

10011

3dB

10100

4dB

10101

5dB

10110

6dB

10111

7dB

11000

8dB

11001

9dB

11010

10dB

11011

11dB

11100

12dB

11101

13dB

11110

14dB

11111

15dB

7

Q

This programs the width of the peak filter.

Q

Bandwidth

0

2/3 Octave

1

4/3 Octave

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