sta335bw STMicroelectronics, sta335bw Datasheet - Page 45

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

STA335BW
5.12.15
5.12.16
5.12.17
Coefficient b0 data register bits 15..8
Coefficient b0 data register bits 7..0
Coefficient write/read control register
Coefficients for user-defined EQ, Mixing, Scaling, and Bass Management are handled
internally in the STA335BW via RAM. Access to this RAM is available to the user via an I
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.
Reading a coefficient from RAM
1.
2.
3.
4.
5.
Reading a set of coefficients from RAM
1.
2.
3.
4.
5.
6.
7.
8.
9.
C5B15
C5B7
D7
D7
D7
Write 6-bits of address to I
Write 1 to R1 bit in I
Read top 8-bits of coefficient in I
Read middle 8-bits of coefficient in I
Read bottom 8-bits of coefficient in I
Write 6-bits of address to I
Write 1 to RA bit in I
Read top 8-bits of coefficient in I
Read middle 8-bits of coefficient in I
Read bottom 8-bits of coefficient in I
Read top 8-bits of coefficient b2 in I
Read middle 8-bits of coefficient b2 in I
Read bottom 8-bits of coefficient b2 in I
Read top 8-bits of coefficient a1 in I
0
0
C5B14
C5B6
D6
D6
D6
0
0
2
2
C address 0x26.
C address 0x26.
C5B5
C5B13
D5
D5
D5
0
0
2
2
C register 0x16.
C register 0x16.
2
2
C5B4
C address 0x17.
C address 0x17.
C5B12
D4
D4
0
D4
2
2
2
2
0
2
2
C address 0x1A.
C address 0x1D.
C address 0x18.
C address 0x18.
C address 0x19.
C address 0x19.
2
2
C address 0x1B.
C address 0x1C.
C5B3
C5B11
RA
D3
D3
0
0
D3
0
C5B2
D2
D2
R1
C5B10
0
0
D2
0
Register description
C5B1
WA
D1
D1
C5B9
0
0
D1
0
C5B0
C5B8
W1
D0
D0
D0
0
0
0
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C