sta381bws STMicroelectronics, sta381bws Datasheet - Page 117
sta381bws
Manufacturer Part Number
sta381bws
Description
Sound Terminal 2.1-channel High-efficiency Digital Audio System Sound Terminal 2.1-channel High-efficiency Digital Audio System
Manufacturer
STMicroelectronics
Datasheet
1.STA381BWS.pdf
(168 pages)
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STA381BWS
For each configuration the PWM signals from the digital driver are mapped in different ways
to the power stage:
2.0 channels, two full-bridges (OCFG = 00)
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On channel 3 line out (LOC bits = 00) the same data as channel 1 processing is sent. On
channel 4 line out (LOC bits = 00) the same data as channel 2 processing is sent. In this
configuration, neither volume control nor EQ has any effect on channels 3 and 4.
In this configuration the PWM slot phase is the following as shown in
Figure 36. 2.0 channels (OCFG = 00) PWM slots
FFX1A -> OUT1A
FFX1B -> OUT1B
FFX2A -> OUT2A
FFX2B -> OUT2B
FFX3A -> OUT3A
FFX3B -> OUT3B
FFX4A -> OUT4A
FFX4B -> OUT4B
FFX1A/1B configured as ternary
FFX2A/2B configured as ternary
FFX3A/3B configured as lineout ternary
FFX4A/4B configured as lineout ternary
OUT1A
OUT1A
OUT1B
OUT1B
OUT2A
OUT2A
OUT2B
OUT2B
OUT3A
OUT3A
OUT3B
OUT3B
OUT4A
OUT4A
OUT4B
OUT4B
Doc ID 018937 Rev 2
Register description: Sound Terminal compatibility
Figure
36.
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