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Revision 1.12

16 - 22

AS5050

Datasheet - Application In form atio n

8.1.3 SPI Connection to the Host µC

Single Slave Mode.

Figure 13. Single Slave Mode

Note:

3-Wire Mode (read only): If the ERROR FLAG is set the device must be externally reset.

Multiple Slave, n+3 Wire (Separate ChipSelect).

Figure 14. Multiple Slave, n+3 Wire (Separate ChipSelect)

UC

AS5050

MOSI

MISO

SCK

SS/

MISO

MOSI

SCK

SS/

Wire_Mode

1

UC

AS5050

SISO

SCK

SS/

MOSI

MISO

SCK

SS/

Wire_Mode

0

Write CMD

Read angle 3

Write CMD

Read angle2

Angle1

Angle2

Write CMD

Read angle1

Write CMD

Read angle4

Angle3

Write CMD

Read angle5

Write CMD

Read angle 6

Angle5

Angle4

Write CMD

NOP

...

Angle6

Write CMD

Read angle2

Write CMD

Read angle1

Angle 1

Angle 2

Write CMD

Read angle 3

Angle 4

Angle 3

MOSI

MISO

0xFFFF

0xFFFF

0xFFFF

0xFFFF

0xFFFF

SISO

Write CMD

Read angle 4

UC

AS5050

MISO

SCK

SS/

MISO

MOSI

SCK

SS/

Wire_Mode

1

1

...

Angle 1

Angle 2

Angle4

Angle3

Angle6

Angle5

MISO

Angle7

4-wire mode

3-wire mode(Read only )

3-wire mode(Bi - dir)

0xFFFF

0xFFFF

0xFFFF

0xFFFF

0xFFFF

SS/

SS/

SS/

UC

AS5050

I

MOSI

MISO

SCK

SS1/

MOSI

MISO

SCK

SS/

Wire_ Mode

1

AS5050

III

MOSI

MISO

SCK

SS /

Wire_ Mode

1

Write CMD

SW reset

Write CMD

Read angle2

xx

...

Angle 1

Write CMD

Read angle1

xx

Angle 2

Write CMD

Read angle3

xx

Angle 3

Write CMD

NOP

UC MOSI

UC MISO

0xFFFF

0xFFFF

AS5050

II

MOSI

MISO

SCK

SS/

Wire_ Mode

1

0xFFFF

0xFFFF

SS2/

SS3/

SS1/

SS2/

SS2/