STA333BW View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STA333BW

2.1-channel 40-watt high-efficiency digital audio system Sound Terminal®

STMicroelectronics 

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Register description

STA333BW

2.1 channels, two full-bridges + one external full-bridge (OCFG = 10)

Mapping:

z FFX1A -> OUT1A

z FFX1B -> OUT1B

z FFX2A -> OUT2A

z FFX2B -> OUT2B

z FFX3A -> OUT3A

z FFX3B -> OUT3B

z EAPD -> OUT4A

z TWARN -> OUT4B

Default modulation:

z FFX1A / 1B configured as ternary

z FFX2A / 2B configured as ternary

z FFX3A / 3B configured as ternary

z FFX4A / 4B is not used

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 17.

Figure 17. 2.1 channels (OCFG = 10) PWM slots

OUT1A

OUT1B

OUT2A

OUT2B

OUT3A

OUT3B

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Doc ID 13773 Rev 3

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