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STA369BWS Datasheet(PDF) 77 Page - STMicroelectronics

Part # STA369BWS
Description  2.1-channel 40-watt high-efficiency digital audio system Sound Terminal?
PDF  89 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA369BWS Datasheet(HTML) 77 Page - STMicroelectronics

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STA369BWS
Register description
Doc ID 16861 Rev 4
77/89
Figure 24.
External active filter with connection for F3X output
The two register bits work as per the following table.
Channel PWM enable (CPWMEN) bit
This bit, when set, activates a mute output when the volume reaches a value lower
than -76 dBFS.
Output power boosting (BOOST) bit
The bit, when enabled, allows the maximum PWM modulation index to be increased from
the default value to 100%. In this case the maximum unclipped output power can be
increased accordingly. Note that this feature does not add any gain to the signal, but just
extends the maximum unclipped level of STA369BWS.
Table 87.
F3X bits configuration
F3X[1]
F3X[0]
Description
0
0
No F3X applied
0
1
F3X applied
1
0
Reserved
1
1
Reserved
VA
VA/2
17
18
CH3
4.7KOhm
4.7KOhm
470pF
470nF
20KOhm
30KOhm
470pF
VA
VA/2
19
20
CH4
4.7KOhm
4.7KOhm
470pF
470nF
20KOhm
30KOhm
470pF
VA
VA/2
17
18
CH3
4.7KOhm
4.7KOhm
470pF
470nF
20KOhm
30KOhm
470pF
VA
VA/2
17
18
CH3
4.7KOhm
4.7KOhm
470pF
470nF
20KOhm
30KOhm
470pF
VA
VA/2
19
20
CH4
4.7KOhm
4.7KOhm
470pF
470nF
20KOhm
30KOhm
470pF
VA
VA/2
19
20
CH4
4.7KOhm
4.7KOhm
470pF
470nF
20KOhm
30KOhm
470pF



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