ACT41000-103 datasheet(21/72 Pages) QORVO

21 / 72 page

ACT41000

Programmable Voltage, Programmable Current, Low Noise

RFPoL Step-Down Voltage Regulator

C One byte WRITE

Writing one byte of data into a target register is completed by one 3-byte I

2C WRITE command.

The one byte WRITE command byte format is

1. I

2C START

2. I

2C ACT41000 (target) device address

3. One zero bit for "write"

4. I

2C ACK from the ACT41000

(This is the end of the 1st byte.)

5. Target ACT41000 register address

(See Table 6.))

6. I

2C ACK from the ACT41000

(This is the end of the 2nd byte.)

7. Register value to write

8. I

2C ACK from the ACT41000

(This is the end of the 3rd byte.)

9. I

2C STOP

C Multi-byte WRITE

Writing multi-byte of data into target registers is completed by one multi-byte I

2C WRITE command.

The multi-byte WRITE command byte format is

1. I

2C START

2. I

2C ACT41000 (target) device address

3. One zero bit for "write"

4. I

2C ACK from the ACT41000

(This is the end of the 1st byte.)

5. The first/starting target ACT41000 register address, assume the address is "N" (See Table 6.))

6. I

2C ACK from the ACT41000

⇒ See "Reg Pointer" that the device sets the target register to "N", at the timing of the ACK.

(This is the end of the 2nd byte.)

7. Register value to write to the "N" register

8. I

2C ACK from the ACT41000

⇒ See "Reg Pointer" that the device automatically increments the target register at the timing of the ACK. So the next

write data goes to "N+1".

(This is the end of the 3rd byte.)

9. Register value to write to the "N+1" register

10. I

2C ACK from the ACT41000

⇒ Another "Reg Pointer" increment to "N+2" at the ACK.

(This is the end of the 4th byte.)

11. Register value to write to the "N+2" register

12. I

2C ACK from the ACT41000

⇒ Another "Reg Pointer" increment to "N+3" at the ACK, though the "N+3" is not used in this example.

(This is the end of the 5th byte.)

13. I

2C STOP

ACT41000 Data Sheet, Rev. B, 01-Apr-2022

Subject to change without notice

ACT41000-103 Datasheet(PDF) 21 Page - Qorvo, Inc

ACT41000-103 Datasheet(HTML) 21 Page - Qorvo, Inc

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