Operation

AN3956

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Doc ID 022034 Rev 1

Figure 2.

Demonstration board connections

1.4

Powering up

Before powering up the demonstration board, ensure that the TDA7491LP is in standby and

mute conditions and the gain is set to the desired value (default 20 dB). Verify also the

dedicated switches and jumpers.

Figure 3.

Standby and mute switches

Table 1.

Standby and mute settings

STBY (S1)

Mute (S2)

Status

L

L

STBY

L

H

STBY

HL

MUTE

HH

PLAY

S1= ST BY

S2= M UT E

L

L

H

H