AS1170 datasheet(31/53 Pages) AMSOSRAM

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AS1170

Detailed description

Datasheet

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DS001083

• v2-00 • 2024-Feb-05

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Figure 28: Data transfer on I²C serial bus

Depending upon the state of the R/W bit, two types of data transfer are possible:

1. Data transfer from a master transmitter to a slave receiver:

The first byte transmitted by the master is the slave address. Next follows a number of data

bytes. The slave returns an acknowledge bit after each received byte. Data is transferred

with the most significant bit (MSB) first.

2. Data transfer from a slave transmitter to a master receiver:

The master transmits the first byte (the slave address). The slave then returns an

acknowledge bit, followed by the slave transmitting a number of data bytes. The master

returns an acknowledge bit after all received bytes other than the last byte. At the end of

the last received byte, a “not acknowledge” is returned. The master device generates all of

the serial clock pulses and the START and STOP conditions. A transfer is ended with a

STOP condition or with a repeated START condition. Since a repeated START condition is

also the beginning of the next serial transfer, the bus is not released. Data is transferred

with the most significant bit (MSB) first.

AS1170 Datasheet(PDF) 31 Page - ams-OSRAM AG