sta335bwqs STMicroelectronics, sta335bwqs Datasheet - Page 57

• Manufacturer Part Number: sta335bwqs
• Description: 2.1-channel High-efficiency Digital Audio System With Qsound Qhd?
• Manufacturer: STMicroelectronics

STA335BWQS
7.12.13
7.12.14
7.12.15
7.12.16
7.12.17
Note:
Coefficient a2 data register bits 7:0
Coefficient b0 data register bits 23:16
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 STA335BWQS via RAM. Access to this RAM is available to the user via an
I
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.
The read and write operation on RAM coefficients works only if LRCKI (pin 29) is switching.
Reading a coefficient from RAM
1.
2.
3.
4.
5.
2
C register interface. A collection of I
Reserved
C5B23
C5B15
C4B7
C5B7
D7
D7
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
0
0
0
0
0
Reserved
C5B22
C5B14
C4B6
C5B6
D6
D6
D6
D6
D6
0
0
0
0
0
2
Reserved
C address 0x26.
C5B21
C5B13
C4B5
C5B5
D5
D5
D5
D5
D5
0
0
0
0
0
2
C register 0x16.
Reserved
2
2
C5B20
C5B12
C4B4
C5B4
C address 0x17.
C registers are dedicated to this function. One
D4
D4
D4
D4
D4
0
0
0
0
0
2
2
C address 0x18.
C address 0x19.
C5B19
C5B11
C4B3
C5B3
D3
D3
RA
D3
D3
D3
0
0
0
0
0
C5B18
C5B10
C4B2
C5B2
D2
D2
D2
D2
D2
R1
0
0
0
0
0
Register description
C5B17
C5B9
C4B1
C5B1
WA
D1
D1
D1
D1
D1
0
0
0
0
0
C5B16
C4B0
C5B8
C5B0
W1
D0
D0
D0
D0
D0
0
0
0
0
0
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