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AS3418

Functional Description

Datasheet

• PUBLIC

DS000507

• v4-00 • 2020-Jan-23

│ 43

6.12.1

Protocol

Figure 58:

I2C Serial Interface Symbol Definition

Symbol

Definition

Note

Start condition after stop

1 bit

Repeated start

1 bit

Device address for write

1000 1110b (8Eh)

Device address for read

1000 1111b (8Fh)

Word address

8 bit

Acknowledge

1 bit

No Acknowledge

1 bit

reg_data

8 bit

data (n)

8 bit

Stop condition

1 bit

WA++

Increment word address internally

during acknowledge

AS3418 (=slave) transmits data

AS3418 (=slave) receives data

Figure 59:

Byte Write

Figure 60:

Page Write

Byte Write and Page Write formats are used to write data to the slave. The transmission begins with

the START condition, which is generated by the master when the bus is in IDLE state (the bus is free).

The device-write address is followed by the word address. After the word address any number of data

bytes can be sent to the slave. The word address is incremented internally, in order to write

subsequent data bytes to subsequent address locations.

reg_data

WA++

reg_data 1

reg_data 2

...

reg_data n

WA++

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