STA323W datasheet(56/77 Pages) STMICROELECTRONICS

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STA323W

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7.9.3

Channel 3 configuration (address 0x10)

EQ control can be bypassed on a per channel basis. If EQ control is bypassed on a given

channel the prescale and all 9 filters (high-pass, biquads, de-emphasis, bass management

cross-over, bass, treble in any combination) are bypassed for that channel.

CxEQBP:

0: perform EQ on channel X (normal operation)

1: bypass EQ on channel X

Tone control (bass and treble) can be bypassed on a per channel basis. If tone control is

bypassed on a given channel the two filters that tone control utilizes are bypassed.

CxTCB:

0: perform tone control on channel x - (default operation)

1: bypass tone control on channel x

Each channel can be configured to output either the patented DDX PWM data or standard

binary PWM encoded data. By setting the CxBO bit to ‘1’, each channel can be individually

set to binary operation mode.

It is also possible to map each channel independently to either of the two limiters available

within the STA323W. In the default mode the channels are not mapped to a limiter.

Each PWM output channel can receive data from any channel output of the volume block.

Which channel a particular PWM output receives depends on the CxOM register bits for that

channel.

C3OM1

C3OM0

C3LS1

C3LS0

C3BO

C3VBP

Reserved

000

Table 61.

Channel Limiter Mapping Selection

CxLS[1,0]

Channel limiter mapping

Channel has limiting disabled

Channel is mapped to limiter #1

Channel is mapped to limiter #2

Table 62.

Channel PWM output mapping

CxOM[1:0]

PWM output from

Channel 1

Channel 2

Channel 3

Not used

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