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STA323W 数据表(PDF) 37 Page - STMicroelectronics

部件名 STA323W
功能描述  2.1 high efficiency digital audio system
PDF  71 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STA323W 数据表(HTML) 37 Page - STMicroelectronics

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STA323W
Register descriptions
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7.2
Configuration register B (address 0x01)
7.2.1
Serial audio input interface format
7.3
Serial data interface
The STA323W serial audio input interfaces with standard digital audio components and
accepts several different serial data formats. The STA323W 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 33), serial clock BICKI (pin 31), and
serial data 1 and 2 SDI12 (pin 32).
The SAI register (configuration register B - 0x01, bits D3-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. The formats available are shown in Figure 48 and
in Table 21, Table 22, and Table 22.
Figure 48.
General serial input and output formats
For example, SAI=1110 and SAIFB=1 specifies right justified 16-bit data, LSB first.
D7
D6
D5
D4
D3
D2
D1
D0
C1IM
C1IM
DSCKE
SAIFB
SAI3
SAI2
SAI1
SAI0
1
0
0
0
0000
Table 20.
Serial audio input interface format
Bit
R/W
RST
Name
Description
3…0
R/W
0000
SAI (3...0)
Determines the interface format of the input serial digital audio
interface.
I
2S
Left Justified
LRCLK
Left
Right
SCLK
SDATA
LSB
MSB
LSB
MSB
MSB
LRCLK
Left
Right
SCLK
SDATA
LSB
MSB
LSB
MSB
MSB
Right Justified
LRCLK
Left
Right
SCLK
SDATA
LSB
MSB
LSB
MSB
MSB



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