AS5013 datasheet(20/50 Pages) AMSCO

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[v2-00] 2021-Apr-19

AS5013 − Detailed Description

SDA by the AS5013 while the serial clock is input on SCL.

START and STOP conditions are recognized as the

beginning and end of a serial transfer. The slave address

byte is the first byte received after the master generates

a START condition. The slave address byte contains the

7-bit AS5013 address. The default address is 40h. The 7-bit

slave address is followed by the direction bit (R/W), which,

for a read, is 1. After receiving and decoding the slave

address byte the device outputs an acknowledge on the

SDA line. The AS5013 then begins to transmit data starting

with the register address pointed to by the register

pointer. If the register pointer is not written to before the

initiation of a read mode the first address that is read is

the last one stored in the register pointer. The AS5013

must receive a “not acknowledge” to end a read.

Figure 19:

Data Read (from Current Pointer Location) - Slave Transmitter Mode

Figure 20:

Data Read (from New Pointer Location) - Slave Transmitter Mode

100000Y

XXXXXXXX

XXXXXXXX NA

S – Start

A – Acknowledge (ACK)

Data transferred: X+1 Bytes + Acknowledge

NA – Not Acknowledge (NACK)

Note: Last data byte is followed by NACK

P – Stop

Y – State of pin ADDR

<Data(n)>

<Data(n+1)>

<Data(n+X)>

XXXXXXXX

<Data(n+2)>

1000000

XXXXXXXX

1000000

XXXXXXXX

S – Start

Sr – Repeated Start

A – Acknowledge (ACK)

Data transferred: X+1 Bytes + Acknowledge

NA – Not Acknowledge (NACK)

Note: Last data byte is followed by NACK

P – Stop

Y – State of pin ADDR

<Data(n+1)>

XXXXXXXX

<Data(n)>

XXXXXXXX NA

<Data(n+X)>

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