sta335bw STMicroelectronics, sta335bw Datasheet - Page 21

• Manufacturer Part Number: sta335bw
• Description: 2.1 Channels High Efficiency Digital Audio System
• Manufacturer: STMicroelectronics

STA335BW
5.2
5.2.1
5.2.2
5.2.3
Configuration register B (address 0x01)
Serial audio input interface format
Serial data interface
The STA335BW audio serial input was designed to interface with standard digital audio
components and to accept a number of serial data formats. STA335BW 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 I
figure that follow.
Serial data first bit
Table 10.
Bit
0
1
2
3
C2IM
D7
1
BICKI
32fs
R/W
R/W
R/W
R/W
R/W
SAIFB
Support serial audio input formats for MSB-first (SAIFB = 0)
0
1
C1IM
D6
0
RST
0
0
0
0
SAI (3...0)
DSCKE
0000
0001
MSB-First
LSB-First
D5
2
0
S, MSB-first. Available formats are shown in the tables and
Name
SAI0
SAI1
SAI2
SAI3
SAIFB
SAIFB
0
0
D4
0
Determines the interface format of the input serial
digital audio interface.
I
Left/right-justified 16-bit data
2
S 15-bit data
SAI3
D3
0
Format
Interface Format
Description
SAI2
D2
0
Register description
SAI1
D1
0
SAI0
D0
0
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