sta559bw STMicroelectronics, sta559bw Datasheet - Page 54

• Manufacturer Part Number: sta559bw
• Description: 5-volt, 2-amp, 2.1-channel High-efficiency Digital Audio System Sound Terminal
• Manufacturer: STMicroelectronics

Register description
6.7.6
6.7.7
6.7.8
Note:
54/67
Coefficient b0 data register bits (addr 0x23 - 0x25)
Coefficient read/write control register (addr 0x26)
Description
Coefficients for user-defined EQ, mixing, scaling, and bass management are handled
internally in the STA559BW via RAM. Access to this RAM is available to the user via an I
register interface. A collection of I
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.
C4B15
C5B23
C5B15
C4B7
C5B7
D7
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
C4B14
C5B22
C5B14
C4B6
C5B6
D6
D6
D6
D6
D6
D6
0
0
0
0
0
Reserved
0
2
C address 0x26.
C4B13
C5B21
C5B13
C4B5
C5B5
D5
D5
D5
D5
D5
D5
0
0
0
0
0
Doc ID 18190 Rev 1
2
C register 0x16.
2
C registers are dedicated to this function. One contains a
2
C4B12
C5B20
C5B12
C4B4
C5B4
C address 0x17.
D4
D4
D4
D4
D4
D4
0
0
0
0
0
2
2
C address 0x18.
C address 0x19.
C4B11
C5B19
C5B11
C4B3
C5B3
D3
D3
D3
D3
D3
D3
RA
0
0
0
0
0
0
C4B10
C5B18
C5B10
C4B2
C5B2
D2
D2
D2
D2
D2
D2
R1
0
0
0
0
0
0
C5B17
C4B9
C4B1
C5B9
C5B1
WA
D1
D1
D1
D1
D1
D1
0
0
0
0
0
0
STA559BW
C5B16
C4B8
C4B0
C5B8
C5B0
W1
D0
D0
D0
D0
D0
D0
0
0
0
0
0
0
2
C