sta381bw STMicroelectronics, sta381bw Datasheet - Page 52

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

Register description: New Map
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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 (
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On channel 3 line out (LOC bits = 00, reg 0x17 bit D7,D6) the same data as channel 1
processing is sent. On channel 4 line out (LOC bits = 00) 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 21. 2.0 channels (OPER = 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 018835 Rev 2
OPER
= 00)
Figure
21.
STA381BW