STA323W datasheet(68/77 Pages) STMICROELECTRONICS

68 / 77 page

User-programmable settings

STA323W

68/77

8.7

Reading and writing coefficients

8.7.1

Reading a coefficient from RAM

Write 8-bits of address to I2C register 0x16.

Write 1 to bit R1 (D2) of I2C register 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.

8.7.2

Reading a set of coefficients from RAM

Write 8-bits of address to I2C register 0x16.

Write 1 to bit RA (D3) of I2C register 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.

8.7.3

Writing a single coefficient to RAM

Write 8-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.

STA323W Datasheet(PDF) 68 Page - STMicroelectronics