MOSA

MS6864

Dual 2W Power Amplifiers with Volume Control

REV 2

19/21

www.mosanalog.com

DEMO BOARD

Function description

Label 1: Supply Input

Supply voltage range is 2.4V to 6.5V.

Label 2: Reset

All I/O pins are reset to default values.

Label 3: Headphone Jack

Used 3.5mm diameter of headphone with 32ohm

Label 4: Speaker Output

Connected to speaker with 8ohm or 4 ohm

Label 5: Signal Input

Connected to audio signals.

Label 6: LED Indicator

The LEDs indicate the chip status and IR received status.

Power ON status, it is green-dark blink twice and then keeps on a light state.

Power OFF status, it is green-dark blink four times and then keeps on a dark state.

It is green-dark blink once when the MCU has received the function code correctly.

SE mode and BTL mode operation

The headphone controls operational mode. System enters SE mode when headphone jack is empty.

When a set of headphone plugged into the jack, the system switched to BTL mode.

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