STA335BWS View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STA335BWS Datasheet PDF : 68 Pages
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Register description
STA335BWS
6.2.2
6.2.3
Serial data interface
The STA335BWS audio serial input was designed to interface with standard digital audio
components and to accept a number of serial data formats. STA335BWS always acts a
slave when receiving audio input from standard digital audio components. Serial data for two
channels is provided using three inputs: left/right clock LRCKI, serial clock BICKI, and serial
data 1 and 2 SDI12.
The SAI register (configuration register B (0x01), bits D3 to D0) and the SAIFB register
(configuration register B (0x01), bit D4) are used to specify the serial data format. The
default serial data format is I2S, MSB-first. Available formats are shown in the tables and
figure that follow.
Serial data first bit
SAIFB
0
1
MSB-first
LSB-first
Format
Table 12. Support serial audio input formats for MSB-first (SAIFB = 0)
BICKI
SAI [3:0]
SAIFB
Interface format
0000
0
I2S 15-bit data
32fs
0001
0
Left/right-justified 16-bit data
0000
0
I2S 16 to 23-bit data
0001
0
Left-justified 16 to 24-bit data
0010
0
Right-justified 24-bit data
48fs
0110
0
Right-justified 20-bit data
1010
0
Right-justified 18-bit data
1110
0000
0
Right-justified 16-bit data
0
I2S 16 to 24-bit data
0001
0
Left-justified 16 to 24-bit data
0010
0
Right-justified 24-bit data
64fs
0110
0
Right-justified 20-bit data
1010
0
Right-justified 18-bit data
1110
0
Right-justified 16-bit data
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