STA309A datasheet(58/67 Pages) STMICROELECTRONICS

58 / 67 page

Registers

STA309A

58/67

Doc ID 13855 Rev 4

7.3

Reading a coefficient from RAM

write top 2-bits of address to I2C register 0x3B

write bottom 8-bits of address to I2C register 0x3C

read top 8-bits of coefficient in I2C address 0x3D

read middle 8-bits of coefficient in I2C address 0x3E

read bottom 8-bits of coefficient in I2C address 0x3F

7.4

Reading a set of coefficients from RAM

write top 2-bits of address to I2C register 0x3B

write bottom 8-bits of address to I2C register 0x3C

read top 8-bits of coefficient in I2C address 0x3D

read middle 8-bits of coefficient in I2C address 0x3E

read bottom 8-bits of coefficient in I2C address 0x3F

read top 8-bits of coefficient b2 in I2C address 0x40

read middle 8-bits of coefficient b2 in I2C address 0x41

read bottom 8-bits of coefficient b2 in I2C address 0x42

read top 8-bits of coefficient a1 in I2C address 0x43

10. read middle 8-bits of coefficient a1 in I2C address 0x44

11. read bottom 8-bits of coefficient a1 in I2C address 0x45

12. read top 8-bits of coefficient a2 in I2C address 0x46

13. read middle 8-bits of coefficient a2 in I2C address 0x47

14. read bottom 8-bits of coefficient a2 in I2C address 0x48

15. read top 8-bits of coefficient b0 in I2C address 0x49

16. read middle 8-bits of coefficient b0 in I2C address 0x4A

17. read bottom 8-bits of coefficient b0 in I2C address 0x4B

7.5

Writing a single coefficient to RAM

write top 2-bits of address to I2C register 0x3B

write bottom 8-bits of address to I2C register 0x3C

write top 8-bits of coefficient in I2C address 0x3D

write middle 8-bits of coefficient in I2C address 0x3E

write bottom 8-bits of coefficient in I2C address 0x3F

write 1 to W1 bit in I2C address 0x4C

STA309A Datasheet(PDF) 58 Page - STMicroelectronics