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STA335ML View Datasheet(PDF) - STMicroelectronics

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STA335ML Datasheet PDF : 20 Pages
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Functional description
4
Functional description
STA335ML
4.1
Serial audio interface protocols
The STA335ML serial audio input interfaces with standard digital audio components and
accepts serial data formats. The STA335ML 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
LRCKI
BICKI
SDI
1 22 33
n-1 n
1 23
n-1 n
Figure 7. Left-justified
LRCKI
BICKI
SDATAI
1 23
n-1 n
1 23
n-1 n
10/20
Doc ID 17638 Rev 4
 

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