STA333BW datasheet(55/67 Pages) STMICROELECTRONICS

55 / 67 page

STA333BW

Doc ID 13773 Rev 3

55/67

6.7.8

Description

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

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 read / write 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

Write 6-bits of address to I2C register 0x16.

Write 1 to R1 bit in I2C address 0x26.

Read top 8-bits of coefficient in I2C address 0x17.

Read middle 8-bits of coefficient in I2C address 0x18.

Read bottom 8-bits of coefficient in I2C address 0x19.

Reading a set of coefficients from RAM

Write 6-bits of address to I2C register 0x16.

Write 1 to RA bit in I2C address 0x26.

Read top 8-bits of coefficient in I2C address 0x17.

Read middle 8-bits of coefficient in I2C address 0x18.

Read bottom 8-bits of coefficient in I2C address 0x19.

Read top 8-bits of coefficient b2 in I2C address 0x1A.

Read middle 8-bits of coefficient b2 in I2C address 0x1B.

Read bottom 8-bits of coefficient b2 in I2C address 0x1C.

Read top 8-bits of coefficient a1 in I2C address 0x1D.

10. Read middle 8-bits of coefficient a1 in I2C address 0x1E.

11. Read bottom 8-bits of coefficient a1 in I2C address 0x1F.

12. Read top 8-bits of coefficient a2 in I2C address 0x20.

13. Read middle 8-bits of coefficient a2 in I2C address 0x21.

14. Read bottom 8-bits of coefficient a2 in I2C address 0x22.

15. Read top 8-bits of coefficient b0 in I2C address 0x23.

16. Read middle 8-bits of coefficient b0 in I2C address 0x24.

17. Read bottom 8-bits of coefficient b0 in I2C address 0x25.

Writing a single coefficient to RAM

Write 6-bits of address to I2C register 0x16.

Write top 8-bits of coefficient in I2C address 0x17.

Write middle 8-bits of coefficient in I2C address 0x18.

Write bottom 8-bits of coefficient in I2C address 0x19.

Write 1 to W1 bit in I2C address 0x26.

STA333BW bảng dữ liệu(PDF) 55 Page - STMicroelectronics

STA333BW bảng dữ liệu(HTML) 55 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67

bảng dữ liệu tải về

Link URL