as5050 austriamicrosystems, as5050 Datasheet - Page 8

• Manufacturer Part Number: as5050
• Description: Low Power 10-bit Magnetic Rotary Encoder
• Manufacturer: austriamicrosystems

AS5050
Datasheet - D e t a i l e d D e s c r i p t i o n
Figure 4. Interrupt Chaining
7.2 SPI Communication
The transmitted data consists of 14-bit data, an Error-Flag and a Parity bit. When writing data to the chip, the Error-Flag is not applicable. The
Parity is generated from the upper 15-bit and forms an even parity over the whole frame. The Error-Flag indicates that a failure occurred in a
previous transmission.
7.2.1 Command Package
Every command sent to the AS5050 is represented with the following layout.
Table 6. Command Package
7.2.2 Read Package (Value Read from AS5050)
The read frame always contains two alarm bits, the error and parity flags and the addressed data of the previous read command.
Table 7. Read Package
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Bit
RWn
Address
PAR
Bit
Data
EF
PAR
Bit
Bit
MSB
RWn
MSB
XENINT
14
14
Description
Indicates read or write command
14-bit address code
Parity bit (EVEN)
Description
14-bit addressed data
Error flag indicating a transmission error in a previous host
transmission
Parity bit (EVEN)
AS5050 (Device A)
13
13
=1
&
mode
INT
12
12
0
1
11
11
10
10
XINT
Data <13:0>
9
9
Revision 1.12
Address <13:0>
XENINT
8
8
7
7
AS5050 (Device B)
=1
6
6
&
mode
INT
0
1
5
5
4
4
XINT
3
3
2
2
XINT
controller
Micro
EF
1
1
LSB
PAR
LSB
PAR
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