STA335BWSQS datasheet(38/70 Pages) STMICROELECTRONICS

Part #	STA335BWSQS

Description	2.1-channel, high-efficiency digital audio system with QSound QHD®

PDF	70 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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38 / 70 page

STA335BWSQS

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For each configuration the PWM from the digital driver are mapped in different way to the

power stage:

2.0 channels, two full bridges (OCFG = 00)

DDX1A OUT1A

DDX1B OUT1B

DDX2A OUT2A

DDX2B OUT2B

DDX3A OUT3A

DDX3B OUT3B

DDX4A OUT4A

DDX4B OUT4B

DDX1A/1B configured as ternary

DDX2A/2B configured as ternary

DDX3A/3B configured as line-out ternary

DDX4A/4B configured as line-out ternary

On channel 3 line out (LOC bits = 00) the same data as channel 1 processing are sent. On

channel 4 line out (LOC bits = 00) the same data as channel 2 processing are sent. In this

configuration, no volume control or EQ have effect on channel 3 and 4.

In this configuration the PWM slot phase is the following as shown in the next figures.

Figure 13.

2.0 channels (OCFG = 00) PWM slots

OUT1A

OUT1B

OUT2A

OUT2B

OUT3A

OUT3B

OUT4A

OUT4B

STA335BWSQS Datasheet(PDF) 38 Page - STMicroelectronics