AS5050 Просмотр технического описания (PDF) - austriamicrosystems AG

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AS5050

Low Power 10-Bit Magnetic Rotary Encoder

austriamicrosystems AG 

AS5050

Datasheet - Detailed Description

7.2.5 SPI Interface Commands

READ Command. For a single READ command two transmission sequences are necessary. The first package written to the AS5050 contains

the READ command (MSB high) and the address the chip has to access, the second package transmitted to the AS5050 device can be any

command the chip has to process next. The content of the desired register is available in the MISO register of the master device at the end of the

second transmission cycle.

Figure 5. READ Command

MSB

LSB

MOSI

READ

T COM

MSB

LSB

Next command

MISO

Response - 1

MSB

LSB

Transmission N

Response on

READ command

MSB

LSB

Transmission N + 1

WRITE Command. A single WRITE command takes two transmission cycles. With a NOP command after the WRITE command you can

verify the sent data with three transmission cycles because the data will be send back during the NOP command.

Figure 6. WRITE Command

MSB

LSB

MOSI

WRITE

command

MISO

Response -1

MSB

LSB

Transmission N

TCOM

MSB

LSB

DATA

Old register

content

MSB

LSB

Transmission N + 1

MSB

LSB

Next command

New register

content

MSB

LSB

Transmission N + 2

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