STA328 datasheet(39/57 Pages) STMICROELECTRONICS

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STA328

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CxEQBP:

0 perform EQ on channel X - normal operation

1 bypass EQ on channel X

Tone control (bass/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

controlled to be in binary operation mode.

Also, there is the capability to map each channel independently onto any of the two limiters

available within the STA328 or even not map it to any limiter at all (default mode).

Each PWM Output Channel can receive data from any channel output of the volume block. Which channel a partic-

ular PWM output receives is dependent upon that channel’s CxOM register bits.

Table 58.

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 59.

Channel PWM output mapping

CxOM[1:0]

PWM output from

Channel 1

Channel 2

Channel 3

Not used

STA328 数据表(PDF) 39 Page - STMicroelectronics