Revision 1.3

www.a ustriamicrosystems.com

Page 16 of 2 9

AS5048A/AS5048B

Magnetic Rotary Encoder

14-bit Angular Position Sensor

Datasheet

4.2.8

SPI Interface Commands

READ Command

For a single READ command two transmission sequences are necessary. The first package written to the AS5048 contains the

READ command (MSB-1 high) and the address the chip has to access, the second package transmitted to the AS5048 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 9 READ Command

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 following command.

Figure 10 WRITE Comma nd