AS5410 datasheet(15/56 Pages) AMSCO

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ams Datasheet

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[v2-04] 2015-Oct-07

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AS5410 − Detailed Description

Data Transfer Between AS5410 and

Microcontroller

Data is transferred to the AS5410 via the MOSI pin

(Master Out – Slave In) with the rising edge of SCK.

Data is read from the AS5410 from the MISO pin (Master In –

Slave Out) with the rising edge of SCK.

The data format consists of data streams with 32 bit in length.

The first 16 bits define a 16-bit address and the subsequent 16

bits contain read or write data.

The MSB of the address word A<15> defines the direction of

data transfer:

A<15> = 0 READ; data transfer from AS5410 to microcontroller;

read measurement data

A<15> = 1 WRITE; data transfer from microcontroller to AS5410;

write configuration data

Figure 17:

Data Transfer Between AS5410 and Microcontroller

Read Mode

For reading a register, the 16-bit Read address (with A<15>=0)

is sent to the MOSI pin. After 16 SCK cycles, data of the specified

address is read from the MISO pin (see Figure 17). At the same

time, the new address may be clocked into the MOSI pin.

MISO

„0" + 15-bit

address

Data 1

Data 2

MOSI

MISO

Read mode

„0" + 15-bit

address

„0" + 15-bit

address

„1" + 15-bit

address

Command

Write mode & readback

Data 1

„1" + 15-bit

address

Command

Data 2

Data 1

MOSI

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