STA382BW datasheet(53/172 Pages) STMICROELECTRONICS

部件名	STA382BW

功能描述	Sound Terminal® 2.1-channel high-efficiency digital audio system

PDF	172 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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53 / 172 page

STA382BW

Doc ID 022783 Rev 1

53/172

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 (OPER = 00)

●

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 line out ternary

●

FFX4A/4B configured as line out ternary

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) 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 21.

Figure 21.

2.0 channels (OPER = 00) PWM slots

OUT1A

OUT1B

OUT2A

OUT2B

OUT3A

OUT3B

OUT4A

OUT4B

OUT1A

OUT1B

OUT2A

OUT2B

OUT3A

OUT3B

OUT4A

OUT4B

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