STA333ML View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STA333ML

2-channel microless high-efficiency digital audio system Sound Terminal ®

STMicroelectronics 

STA333ML

4

Functional description

Functional description

4.1

Serial audio interface protocols

The STA333ML serial audio input interfaces with standard digital audio components and

accepts serial data formats. The STA333ML always acts as a slave when receiving audio

input from standard digital audio components. Serial data for two channels is provided using

3 input pins: left/right clock LRCKI (pin 29), serial clock BICKI (pin 28), and serial data SDI

(pin 30).

The available formats are given in Figure 6 and Figure 7. Pin FMT (pin 2) selects the format

such that FMT = logical 0 gives the I2S format and FMT = logical 1 gives the left-justified.

Figure 6. I2S

Lrclki

Bicki

Sdi

1 22 33

n-1 n

1 23

n-1 n

Lrclki/

Lrclko

Biclki/

Biclko

Sdatai/

Sdatao

1 23

Figure 7. Left-justified

n-1 n

1 23

n-1 n

DocID13177 Rev 8

11/23

23

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