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STA559BW Datasheet(PDF) 37 Page - STMicroelectronics

Part # STA559BW
Description  5 V, 2 A, 2.1 channel high-efficiency digital audio system Sound Terminal
PDF  67 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA559BW Datasheet(HTML) 37 Page - STMicroelectronics

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STA559BW
Register description
67
2.1 channels, two half-bridges + one full-bridge (OCFG = 01)
Mapping:
FFX1A -> OUT1A
FFX2A -> OUT1B
FFX3A -> OUT2A
FFX3B -> OUT2B
FFX1A -> OUT3A
FFX1B -> OUT3B
FFX2A -> OUT4A
FFX2B -> OUT4B
Modulation:
FFX1A/1B configured as binary
FFX2A/2B configured as binary
FFX3A/3B configured as binary
FFX4A/4B configured as binary
In this configuration, channel 3 has full control (volume, EQ, etc…). On OUT3/OUT4
channels the channel 1 and channel 2 PWM are replicated.
In this configuration the PWM slot phase is the following as shown in Figure 15.
Figure 15. 2.1 channels (OCFG = 01) PWM slots
OUT1A
OUT2A
OUT2B
OUT3A
OUT3B
OUT1B
OUT4A
OUT4B
OUT1A
OUT2A
OUT2B
OUT3A
OUT3B
OUT1B
OUT4A
OUT4B
OUT1A
OUT2A
OUT2B
OUT3A
OUT3B
OUT1B
OUT4A
OUT4B
OUT1A
OUT2A
OUT2B
OUT3A
OUT3B
OUT1B
OUT1A
OUT2A
OUT2B
OUT3A
OUT3B
OUT1B
OUT4A
OUT4B
OUT1A
OUT2A
OUT2B
OUT3A
OUT3B
OUT1B
OUT4A
OUT4B



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