AMS AS5048 Eval-Kit Benutzerhandbuch - Seite 7

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User Manual – AS5048-AB
4.2 One device SPI mode, bidirectional – 4 wire
If other registers than only angle values have to be read, or in order to write registers into the AS5048,
the signal MOSI is necessary.
Figure 6:
Using the SPI Interface bidirectional with a microcontroller
3~3.6V
Regulated
Power Supply
GND
GND
P1

4.3 Multi devices SPI Daisy chain mode

The AS5048 can be daisy chained, using 4 wires only for SPI communication.
In this configuration with n x encoders, the sequence will be processed as follow:
- MCU sets SS/ = 0
- MCU shifts n x 16-bit (e.g. READ command FFFFh) through the chain
- MCU sets SS/=1
At that point all the n x encoders have received the READ command FFFFh.
- MCU sets SS/=0
- MCU shifts n x 16-bit (e.g. NOP command 0000h)
- MCU sets SS/=1
At that point the n x 16-bit received on MISO are the n x angle values.
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MCU
SPI
GND
GND
AS505x
Revision 1.2 / 14.01.2014
page 7/12