Datasheet

STA309A Registers
Doc ID 13855 Rev 4 57/67
7.2.76 Coefficient b0 data register, bits 15:8 (0x4A)
7.2.77 Coefficient b0 data register, bits 7:0 (0x4B)
7.2.78 Coefficient write control register (0x4C)
Coefficients for EQ and bass management are handled internally in the STA309A via RAM.
Access to this RAM is available to the user via an I
2
C register interface.
A collection of I
2
C 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 of the coefficient(s) to RAM. The
following are instructions for reading and writing coefficients.
D7 D6 D5 D4 D3 D2 D1 D0
C5B15 C5B14 C5B13 C5B12 C5B11 C5B10 C5B9 C5B8
00000000
D7 D6 D5 D4 D3 D2 D1 D0
C5B7 C5B6 C5B5 C5B4 C5B3 C5B2 C5B1 C5B0
00000000
D7 D6 D5 D4 D3 D2 D1 D0
Reserved WA W1
00000000