MOSA

MS6864

Dual 2W Power Amplifiers with Volume Control

REV 2

12/21

www.mosanalog.com

I

MSB

LSB

Function

Initial status

0

0

1

1

1

1

1

1

L-ch, Attenuation and Mute

Mute On

0

1

1

1

1

1

1

1

R-ch, Attenuation and Mute

Mute On

1

0

0

0

0

0

0

0

L-ch, Input Gain

0dB

1

0

1

0

0

0

0

0

R-ch, Input Gain

0dB

1

1

0

1

1

1

1

1

Power Down Mode

All devices are

power down

1

1

1

0

0

0

0

0

Output mode (SE/BTL)

BTL

I

Input gain

Set the left channel gain to be 3dB and the right channel gain to be 3dB

ACK

Start

MS6864 Address

ACK

1

0

0

0

0

0

0

1

L-ch, G = 3dB

ACK

R-ch, G = 3dB

1

0

1

0

0

0

0

1

Stop

Gain

The left and right input channels are independent.

Input Attenuation

Set the left channel to be -15dB and the right channel to be -30dB

ACK

Start

MS6864 Address

ACK

0

0

0

0

0

0

1

1

L-ch, Att = -15dB

ACK

R-ch, Att = -30dB

0

1

0

1

0

0

1

0

Stop

-10dB

-5dB

-30dB

0dB

Power down mode

Set the L-ch PA output to be active mode.

ACK

Start

MS6864 Address

ACK

1

1

0

1

1

1

1

0

Left PA is active mode

Stop

L-ch

Output mode

Set the output mode to be BTL mode

ACK

Start

MS6864 Address

ACK

1

1

1

0

0

0

0

0

BTL mode

Stop

Output mode