sta381bws STMicroelectronics, sta381bws Datasheet - Page 119

• 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

STA381BWS
2.1 channels, two full-bridges + one external full-bridge (OCFG = 10)
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In this configuration, channel 3 has full control (volume, EQ, etc…). On OUT4 channel the
external bridge control signals are muxed.
In this configuration the PWM slot phase is the following as shown in
Figure 38. 2.1 channels (OCFG = 10) PWM slots
FFX1A -> OUT1A
FFX1B -> OUT1B
FFX2A -> OUT2A
FFX2B -> OUT2B
FFX3A -> OUT3A
FFX3B -> OUT3B
EAPD -> OUT4A
TWARN -> OUT4B
FFX1A/1B configured as ternary
FFX2A/2B configured as ternary
FFX3A/3B configured as ternary
FFX4A/4B is not used
OUT1A
OUT1A
OUT1A
OUT1A
OUT1B
OUT1B
OUT1B
OUT1B
OUT2A
OUT2A
OUT2A
OUT2A
OUT2B
OUT2B
OUT2B
OUT2B
OUT3A
OUT3A
OUT3A
OUT3A
OUT3B
OUT3B
OUT3B
OUT3B
Doc ID 018937 Rev 2
Register description: Sound Terminal compatibility
Figure
38.
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