AS5600-ASOT datasheet(10/43 Pages) AMSCO

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[v1-06] 2018-Jun-20

AS5600 − Detailed Description

I²C Interface

The AS5600 supports the 2-wire Fast-mode Plus I²C-slave

protocol in device mode, in compliance with the NXP

Semiconductors (formerly Philips Semiconductors)

specification UM10204. A device that sends data onto the bus

is a transmitter and a device receiving data is a receiver. The

device that controls the message is called a master. The devices

that are controlled by the master are called slaves. A master

device generates the serial clock (SCL), controls the bus access,

and generates the START and STOP conditions that control the

bus. The AS5600 always operates as a slave on the I²C bus.

Connections to the bus are made through the open-drain I/O

lines SDA and the input SCL. Clock stretching is not included.

The host MCU (master) initiates data transfers. The 7-bit slave

address of the AS5600 is 0x36 (0110110 in binary).

Supported Modes

• Random/Sequential read

• Byte/Page write

• Automatic increment (ANGLE register)

• Standard-mode

• Fast-mode

• Fast–mode plus

The SDA signal is the bidirectional data line. The SCL signal is

the clock generated by the I²C bus master to synchronize

sampling data from SDA. The maximum SCL frequency is 1 MHz.

Data is sampled on the rising edge of SCL.

I²C Interface Operation

Figure 14:

I²C Timing Diagram

SDA

SCL

Start

Stop

tbuf

tLOW tR

tHD.STA

tHIGH

tSU.DAT

tSU.STA

tHD.STA

tSU.STO

Repeated

Start

tHD.DAT

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