LM4930

SNAS212C – JULY 2003 – REVISED MAY 2013

www.ti.com

GAINCONFIG (XX10010).

(Set = logic 1, Clear = logic 0)

BIT

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

RESET

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Address

Register

Description

4:0

LOUDSPKR_GAIN

Programs the gain of the loudspeaker amplifier. Gain is set as follows:

4:0

Loudspeaker Gain

4:0

Loudspeaker Gain

00000

-34.5dB

10000

-10.5dB

00001

-33dB

10001

-9dB

00010

-31.5dB

10010

-7.5dB

00011

-30dB

10011

-6dB

00100

-28.5dB

10100

-4.5dB

00101

-27dB

10101

-3dB

00110

-25.5dB

10110

-1.5dB

00111

-24dB

10111

0dB

01000

-22.5dB

11000

1.5dB

01001

-21dB

11001

3dB

01010

-19.5dB

11010

4.5dB

01011

-18dB

11011

6dB

01100

-16.5dB

11100

7.5dB

01101

-15dB

11101

9dB

01110

-13.5dB

11110

10.5dB

01111

-12dB

11111

12dB

9:5

HP_GAIN

Programs the gain of the headphone amplifier. Gain is set as follows:

9:5

Headphone Gain

9:5

Headphone Gain

00000

-46dB

10000

-22.5dB

00001

-45dB

10001

-21dB

00010

-43.5dB

10010

-19.5dB

00011

-42db

10011

-18dB

00100

-40.5dB

10100

-16.5dB

00101

-39dB

10101

-15dB

00110

-37.5dB

10110

-13.5dB

00111

-36dB

10111

-12dB

01000

-34.5dB

11000

-10.5dB

01001

-33dB

11001

-9dB

01010

-31.5dB

11010

-7.5dB

01011

-30dB

11011

-6dB

01100

-28.5dB

11100

-4.5dB

01101

-27dB

11101

-3dB

01110

-25.5dB

11110

-1.5dB

01111

-24dB

11111

0dB

13:10

MIC_GAIN

Programs the gain of the microphone amplifier. Gain is set as follows:

(1)

This register is used to control the gain of the headphone amplifier, the loudspeaker amplifier, and the microphone preamplifier. The 7

bit address for the GAINCONFIG register is XX10010.

(X = 0 if ADDR is set to logic 0)

(X = 1 if ADDR is set to logic 1)

6

Submit Documentation Feedback

Copyright © 2003–2013, Texas Instruments Incorporated

Product Folder Links: LM4930