sta335bwsqs13tr STMicroelectronics, sta335bwsqs13tr Datasheet - Page 33

• Manufacturer Part Number: sta335bwsqs13tr
• Description: 2.1-channel, High-efficiency Digital Audio System With Qsound Qhd
• Manufacturer: STMicroelectronics

STA335BWSQS
6.4.5
6.4.6
6.4.7
6.4.8
Biquad coefficient link
Table 31.
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/anti-clipping bit
Table 32.
Both limiters can be used in one of two ways, anti-clipping or dynamic range compression.
When used in anti-clipping mode the limiter threshold values are constant and dependent on
the limiter settings. In dynamic range compression mode the limiter threshold values vary
with the volume settings allowing a night-time listening mode that provides a reduction in the
dynamic range regardless of the volume level.
Zero-detect mute enable
Table 33.
Setting the ZDE bit enables the zero-detect automatic mute. The zero-detect circuit looks at
the data for each processing channel at the output of the crossover (bass management)
filter. If any channel receives 2048 consecutive zero value samples (regardless of fs) then
that individual channel is muted if this function is enabled.
MiamiMode enable
Table 34.
Bit
Bit
Bit
Bit
4
5
6
7
RW
RW
RW
RW
RW
RW
RW
RW
BQL
DRC
ZDE
MME
RST
RST
RST
RST
0
0
0
1
Name
Name
DRC
MME
Name
Name
BQL
ZDE
0: Limiters act in anti-clipping mode
1: Limiters act in dynamic range compression mode
0: Sub mix into Left/Right disabled
1: Sub mix into Left/Right enabled
0: Each channel uses coefficient values
1: Each channel uses channel 1 coefficient values
1: Enable the automatic zero-detect mute
Description
Description
Description
Description
Register description
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