STA335BWS View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STA335BWS

2.1 channels high efficiency digital audio system

STMicroelectronics 

Register description

STA335BWS

2.1 channels, two fullbridge + one external full bridge (OCFG = 10):

" DDX1A ' OUT1A

" DDX1B ' OUT1B

" DDX2A ' OUT2A

" DDX2B ' OUT2B

" DDX3A ' OUT3A

" DDX3B ' OUT3B

" EAPD ' OUT4A

" TWARN OUT4B

" DDX1A/1B configured as ternary

" DDX2A/2B configured as ternary

" DDX3A/3B configured as ternary

" DDX4A/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 the next figures:

Figure 15. 2.1 channels (OCFG = 10) PWM slots

OUT1A

OUT1B

OUT2A

OUT2B

OUT3A

OUT3B

6.6.2

Invalid input detect mute enable

Bit R/W RST

Name

Description

2

R/W

1

IDE

Setting of 1 enables the automatic invalid input

detect mute

Setting the IDE bit enables this function, which looks at the input I2S data and will

automatically mute if the signals are perceived as invalid.

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