Connection Diagram

20030002

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Order Number LM4548AVH

See NS Package Number VBH48A

Pin Descriptions

ANALOG I/O

Name

Pin

I / O

Functional Description

PC_BEEP

12

I

Mono Input

This line level (1 Vrms nominal) mono input is mixed equally into both channels of the Stereo

Mix signal at MIX2 under the control of the PC_Beep Volume control register, 0Ah. The

PC_BEEP level can be muted or adjusted from 0 dB to -45 dB in 3 dB steps. The Stereo Mix

signal feeds both the Line Out and Line Level Out analog outputs and is also selectable at

the Record Select Mux.

PHONE

13

I

Mono Input

This line level (1 Vrms nominal) mono input is mixed equally into both channels of the Stereo

Mix signal at MIX2 under the control of the Phone Volume register, 0Ch. The PHONE level

can be muted or adjusted from +12 dB to -34.5 dB in 1.5 dB steps. The Stereo Mix signal

feeds both the Line Out and Line Level Out analog stereo outputs and is also selectable at

the Record Select Mux.

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