sta381bw STMicroelectronics, sta381bw Datasheet - Page 26

• Manufacturer Part Number: sta381bw
• Description: Sound Terminal 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

Device overview
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The second processing stage embeds a mixing block, a biquadratic/crossover filter, a DRC
stage, the volume control, a DC cut filter and a post scaler. Depending on the device
settings, the following configuration and features are available:
●
Figure 5.
L
R
2.1 output with individually configurable anticlipper/DRCs
configurable DRC/anticlippers are available while the eighth biquadratic filter, jointly
with the mixer block, can be used to perform LFE. This configuration and features
ensure the backward compatibility with the previous Sound Terminal
Processing path, second part: 2.1 output with individually configurable
anticlipper/DRCs
M ix C oeffic ients
U s er-D efined
C1Mx1
C1Mx2
C2Mx1
C2Mx2
C3Mx1
C3Mx2
+
+
+
D eterm ined by XO Setting
Doc ID 018835 Rev 2
C ros sov er F requenc y
(User Defin ed If
Lo w-p ass XO
Hi-p ass XO
Hi-p ass XO
Ch an n el ½
Ch an n el ½
--------------
--------------
Ch an n el 3
--------------
Biq uad #8
Biq uad #8
Biq uad #8
XO =0000)
Filter
Filter
filter
Ch an n el 2
Ch an n el 3
Ch an n el 1
Vo lume
Vo lume
Vo lume
An ti-clipper
An ti-clipper
An ti-clipper
DRC
DRC
DRC
/
/
/
(Figure
DC Cut
DC Cut
DC Cut
Filter
Filter
Filter
5): two individually
®
products.
Po st Scale
Po st Scale
Po st Scale
STA381BW