TABLE 7. Gain Select Register

Data Bit

Bit Name

Default

Value

Condition

Function

GSO

MGAIN0

0

0

Programs the gain response of the midband audio synchronized filter

which drives the LED2 PWM color LED driver for the midband audio

frequencies. Gain is set as follows:

1

GS1

MGAIN1

1

0

Midband Filter Gain

1

GS2

MGAIN2

0

0

000

minimum

1

001

low

010

medium

011

high

100

maximum

GS3

SGAIN0

0

0

Programs the audio gain of the input summing amplifier. Gain is set

as follows:

1

Input Signal Gain

GS4

SGAIN1

1

0

000

–11dB

1

001

–6.5dB

GS5

SGAIN2

0

0

010

0dB

011

3.5dB

1

100

6dB

101

10dB

110

12dB

www.national.com

11