AD82178 datasheet(46/90 Pages) ESMT

46 / 90 page

ESMT

AD82178

Elite Semiconductor Microelectronics Technology Inc.

Publication Date: Jul. 2024

Revision: 1.3

46/90

 Address 0X1C: State control 7

The I

2C device number can select 2 or 4 address in B[7].

The ERROR pin of AD82178 is a dual function pin. It is treated as a I

2C device address selection input

when B[6] is set as low. It will become as an ERROR output pin when B[6] is set as high.

AD82178 can turn on delta quaternary modulation via bit 5.

AD82178 provide 2 kind of fade in/out speed via bit 2. One is 1.25ms from mute to 0dB. The other one is

10ms from mute to 0dB.

AD82178 provide noise gate function if receiving 2048 signal sample points smaller than noise gate attack

level. User can change noise gate gain via bit1~ bit0. When noise gate function occurs, input signal will

multiply noise gate gain (x1/8, x1/4 x1/2, x0). User can select fade out or not via bit 4.

BIT

NAME

DESCRIPTION

VALUE

FUNCTION

B[7]

DEV_NUM

Device address

number

2 address

4 address

B[6]

A_SEL_FAULT

2C address selection

or ERROR output

2C device address

selection

ERROR output

B[5]

D_MOD

Delta quaternary

modulation

Disable

enable

B[4]

DIS_NG_FADE Disable noise gate fade

Fade

No fade

B[3]

QD_EN

Quaternary and delta

quaternary switching

Disable

enable

B[2]

FADE_SPEED

Fade in/out speed

selection

1.25ms

10ms

B[1:0]

NG_GAIN[1:0]

Noise gate gain

x1/8

x1/4

x1/2

Mute

AD82178 Datasheet(PDF) 46 Page - Elite Semiconductor Memory Technology Inc.

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