STA339BWS datasheet(32/79 Pages) STMICROELECTRONICS

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STA339BWS

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DocID015276 Rev 9

De-emphasis

DSP bypass

Setting the DSPB bit bypasses the EQ function of the STA339BWS.

Postscale link

Postscale functionality can be used for power-supply error correction. For multi-channel

applications running off the same power-supply, the postscale values can be linked to the

value of channel 1 for ease of use and update the values faster.

Biquad coefficient link

For ease of use, all channels can use the biquad coefficients loaded into the Channel-1

coefficient RAM space by setting the BQL bit to 1. Therefore, any EQ updates only have to

be performed once.

Dynamic range compression/anticlipping bit

Table 28. De-emphasis

Bit

R/W

RST

Name

Description

1R/W

DEMP

0: no de-emphasis

1: enable de-emphasis on all channels

Table 29. DSP bypass

Bit

R/W

RST

Name

Description

R/W

DSPB

0: normal operation

1: bypass of biquad and bass/treble functions

Table 30. Postscale link

Bit

R/W

RST

Name

Description

3R/W

PSL

0: each channel uses individual postscale value

1: each channel uses channel 1 postscale value

Table 31. Biquad coefficient link

Bit

R/W

RST

Name

Description

4R/W

BQL

0: each channel uses coefficient values

1: each channel uses channel 1 coefficient values

Table 32. Dynamic range compression/anticlipping bit

Bit

R/W

RST

Name

Description

R/W

DRC

0: limiters act in anticlipping mode

1: limiters act in dynamic range compression mode

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