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STA333BW Datasheet(PDF) 53 Page - STMicroelectronics

Part # STA333BW
Description  2.1-channel high-efficiency digital audio system
PDF  64 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA333BW Datasheet(HTML) 53 Page - STMicroelectronics

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STA333BW
Register description
53/64
6.12.15
Coefficient b0 data register bits 15:8
6.12.16
Coefficient b0 data register bits 7:0
6.12.17
Coefficient write/read control register
Coefficients for user-defined EQ, mixing, scaling, and bass management are handled
internally in the STA333BW via RAM. Access to this RAM is available to the user via an I2C
register interface. A collection of I2C registers are dedicated to this function. One contains a
coefficient base address, five sets of three store the values of the 24-bit coefficients to be
written or that were read, and one contains bits used to control the write/read of the
coefficient(s) to/from RAM.
Note:
The read and write operation on RAM coefficients works only if LRCKI (pin 29) is switching.
Reading a coefficient from RAM
1.
Write 6-bits of address to I2C register 0x16.
2.
Write 1 to R1 bit in I2C address 0x26.
3.
Read top 8-bits of coefficient in I2C address 0x17.
4.
Read middle 8-bits of coefficient in I2C address 0x18.
5.
Read bottom 8-bits of coefficient in I2C address 0x19.
Reading a set of coefficients from RAM
1.
Write 6-bits of address to I2C register 0x16.
2.
Write 1 to RA bit in I2C address 0x26.
3.
Read top 8-bits of coefficient in I2C address 0x17.
4.
Read middle 8-bits of coefficient in I2C address 0x18.
5.
Read bottom 8-bits of coefficient in I2C address 0x19.
6.
Read top 8-bits of coefficient b2 in I2C address 0x1A.
7.
Read middle 8-bits of coefficient b2 in I2C address 0x1B.
8.
Read bottom 8-bits of coefficient b2 in I2C address 0x1C.
D7
D6
D5
D4
D3
D2
D1
D0
C5B15
C5B14
C5B13
C5B12
C5B11
C5B10
C5B9
C5B8
0
000
00
00
D7
D6
D5
D4
D3
D2
D1
D0
C5B7
C5B6
C5B5
C5B4
C5B3
C5B2
C5B1
C5B0
0
0
000
00
0
D7
D6
D5
D4
D3
D2
D1
D0
RA
R1
WA
W1
00
00



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