AMC7812SPAPR Datasheet, PDF (51/92 Pages) Texas Instruments – 12-Bit Analog Monitoring and Control Solution with Multichannel ADC, DACs, and Temperature Sensors

AMC7812
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AMC7812 Communication Protocol for I²C
The AMC7812 uses the following I²C protocols.
SBAS513E – JANUARY 2011 – REVISED SEPTEMBER 2013
Writing a Single Word of Data to a 16-Bit Register (Figure 100)
1. The master device asserts a start condition.
2. The master then sends the 7-bit AMC7812 slave address followed by a zero for the direction bit, indicating a
write operation.
3. The AMC7812 asserts an acknowledge signal on SDA.
4. The master sends a register address.
5. The AMC7812 asserts an acknowledge signal on SDA.
6. The master sends a data byte of the high byte of the register (D15:D8).
7. The AMC7812 asserts an acknowledge signal on SDA.
8. The master sends a data byte of the low byte of the register (D7:D0).
9. The AMC7812 asserts an acknowledge signal on SDA.
10. The master asserts a stop condition to end the transaction.
S
Device
Slave Address
Register Pointer
0A
(Register Address)
A
High Byte to
Device Register
A
Low Byte to
Device Register
AP
From Master to Slave
From Slave to Master
A = Acknowledge
N = Not Acknowledge
S = START Condition
P = Stop Condition
Sr = Repeated START Condition
Figure 100. Write Single Byte
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