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MAX97003

High-Efficiency, Low-Noise Audio Subsystem

Table 4. Mixer Registers

Mixers

The IC features independent mixers for the left headphone, right headphone, and speaker paths. Each output can

select any combination of any inputs. This allows for mixing two audio signals together and routing independent signals

to the headphone and speaker amplifiers. If one of the inputs is not selected by either mixer, it is automatically powered

down to reduce current consumption.

BIT

NAME

DESCRIPTION

0x05

HPLMIX

Left Headphone Mixer. Selects which of the four inputs is routed to the left headphone

output.

0000

xxx1

xx1x

x1xx

1xxx

No input

INA1 (Disabled when INADIFF = 1)

INA2 (Select when INADIFF = 1)

INB1 (Disabled when INBDIFF = 1)

INB2 (Select when INBDIFF = 1)

HPRMIX

Right Headphone Mixer. Selects which of the four inputs is routed to the right

headphone output.

0000

xxx1

xx1x

x1xx

1xxx

No input

INA1 (Disabled when INADIFF = 1)

INA2 (Select when INADIFF = 1)

INB1 (Disabled when INBDIFF = 1)

INB2 (Select when INBDIFF = 1)

0x06

SPKMIX

Speaker Mixer. Selects which of the four inputs is routed to the speaker output.

0000

xxx1

xx1x

x1xx

1xxx

No input

INA1 (Disabled when INADIFF = 1)

INA2 (Select when INADIFF = 1)

INB1 (Disabled when INBDIFF = 1)

INB2 (Select when INBDIFF = 1)

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