sta381bw STMicroelectronics, sta381bw Datasheet - Page 107

• Manufacturer Part Number: sta381bw
• Description: Sound Terminal 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

STA381BW
7.2
7.2.1
7.2.2
7.2.3
Configuration register B (addr 0x01)
Serial data interface
The STA381BW audio serial input was designed to interface with standard digital audio
components and to accept a number of serial data formats. The STA381BW always acts as
the 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 bits (D3 to D0) and the SAIFB bit (D4) are used to specify the serial data format.
The default serial data format is I
that follow.
Serial audio input interface format
Table 105. Serial audio input interface
Serial data first bit
Table 106. Serial data first bit
Bit
0
1
2
3
C2IM
D7
1
R/W
R/W
R/W
R/W
R/W
SAIFB
0
1
C1IM
D6
0
RST
0
0
0
0
DSCKE
D5
0
MSB-first
LSB-first
Doc ID 018835 Rev 2
Name
SAI0
SAI1
SAI2
SAI3
2
S, MSB-first. Available formats are shown in the tables
Register description: Sound Terminal compatibility
SAIFB
D4
0
Determines the interface format of the input serial
digital audio interface
SAI3
D3
0
Format
SAI2
Description
D2
0
SAI1
D1
0
SAI0
107/168
D0
0