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AS5055

Datasheet - Detailed Descr i p ti on

7.2.3 Write Data Package (Value Written to AS5055)

The write frame is compatible to the read frame and contains two additional bits, the don’t care and parity flag.

If the previous command was a write command a second package has to be transmitted.

7.2.4 Register Block

Table 8. Write Package

Bit

MSB

14

13

12

11

10

9

8

7

6

5

4

3

2

1

LSB

Data <13:0>

Don’t care

PAR

Bit

Description

Data

14-bit data to write to former selected address

PAR

Parity bit (EVEN)

Table 9. Register Block

Register

Bit

Mode

Reset Value

Bit

Description

Power ON Reset (POR) Register - [0x3F22]

POR_OFF

8

R/W

0x00

<7:0>

The POR cell is deactivated when the value 0x5A is written

to this register (30µA reduction of current consumption)

Software Reset Register - [0x3C00]

software_reset

14

W

0x000

<13:0>

Refer to SOFTWARE RESET Command on page 13

Master Reset Register - [0x33A5]

master_reset

14

W

0x000

<13:0>

Inject a power on reset cycle

Clear Error Flag Register - [0x3380]

clr_error_flag

14

R

0x000

<13:0>

Refer to CLEAR ERROR FLAG Command on page 12

No Operation Register - [0x0000]

NOP

14

w

0x000

<13:0>

Refer to NOP Command on page 14

Automatic Gain Control (AGC) Register - [0x03FF8]

AGC

6

R/W

0x20

<5:0>

Automatic gain control:

low values = strong magnetic field

high values = weak magnetic field

Angular Data - [0x3FFF]

Angle Value

12

R

0x000

<11:0>

Measured angular value, 12-bit

Alarm LO

1

R

0

<12>

Alarm bit indicating a too high magnetic field, active HIGH.

Refer to Error Monitoring on page 14

Alarm HI

1

R

0

<13>

Alarm bit indicating a too low magnetic field, active HIGH.

Refer to Error Monitoring on page 14

System Configuration Register 1 - [0x3F20]

resolution

2

R

‘00’

<13:12>

‘00’ indicates 12-bit resolution

chip ID

3

R

‘001’

<11:9>

Silicon version 001

Error Status Register - [0x335A]

error_status

14

R

0x000

<13:0>

Refer to Error Status Command on page 15