PT7313E

V1.0

9

February 2010

INPUT SELECTOR

The PT7313E provides 3 stereo input selector and following table shows the definition of the correspond register. The LD

register is determinate the loudness function is ON or OFF, and G0 and G1 determinate the input gain of the selector

output, this function is use to matching level of different sources to avoid overall volume difference.

MSB

LSB

Function

0

1

0

G1

G0

LD

S1

S0

Audio switch

0

0

Stereo 1

0

1

Stereo 2

1

0

Stereo 3

0

Loudness ON

1

Loudness OFF

0

0

+11.25dB

0

1

+7.5dB

1

0

+3.75dB

1

1

0dB

BASS AND TREBLE DATA BYTES

The following table shows a detailed description of the Bass and Treble Data Byte. For example a Treble at -12dB is

given by: 0 1 1 1 0 0 0 1 (0x71).

MSB

LSB

Function

0

1

1

0

C3

C2

C1

C0

Bass

0

1

1

1

C3

C2

C1

C0

Treble

0

0

0

0

-14dB

0

0

0

1

-12dB

0

0

1

0

-10dB

0

0

1

1

-8dB

0

1

0

0

-6 dB

0

1

0

1

-4 dB

0

1

1

0

-2 dB

0

1

1

1

0 dB

1

1

1

1

0 dB

1

1

1

0

+2 dB

1

1

0

1

+4 dB

1

1

0

0

+6 dB

1

0

1

1

+8 dB

1

0

1

0

+10 dB

1

0

0

1

+12 dB

1

0

0

0

+14 dB