as5055 austriamicrosystems, as5055 Datasheet - Page 10

• Manufacturer Part Number: as5055
• Description: Low Power 12 Bit Magnetic Rotary Encoder
• Manufacturer: austriamicrosystems

AS5055
Data Sheet – SPI Communication
10.4 Register Block
Note:
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Power ON Reset (POR) Register - [0x3F22]
POR_OFF
Software Reset Register - [0x3C00]
software_reset
Clear Error Flag Register - [0x3380]
clr_error_flag
No Operation Register - [0x0000]
NOP
Automatic Gain Control (AGC) Register - [0x03FF8]
AGC
Angular Data - [0x3FFF]
Angle Value
Alarm LO
Alarm HI
System Configuration Register 1 - [0x3F20]
resolution
chip ID
invert_spinning
FE_bw_setting
FE_gain_setting
break_AGC_loop
break_offset_loop
interrupt_mode
(1) Both bits High: Alarm LO = Alarm Hi = 1 indicate a major system error (DAC overflow, CORDIC overflow or
Register
Hall current error)
Bits
14
14
14
12
8
6
1
1
2
3
1
2
2
1
1
1
Mode
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
w
w
r
r
r
r
r
r
Reset Value
0x000
0x00
0x20
‘001’
0x0
0x0
0x0
‘00’
‘00’
‘00’
0
0
0
0
0
0
Revision 1.2
<13:12>
<13:0>
<13:0>
<13:0>
<11:0>
<11:9>
<7:0>
<5:0>
<6:5>
<4:3>
<12>
<13>
<8>
<2>
<1>
<0>
Bit
The POR cell is deactivated when the value
0x5A is written to this register (30µA
reduction of current consumption)
See to the description of the software reset
See to the description of the clear error flag
command
See to the description of the no operation
command
Automatic gain control:
Measured angular value, 12 bit
Alarm bit indicating a too low magnetic field,
active HIGH (1)
Alarm bit indicating a too high magnetic
field, active HIGH (1)
‘00’ indicates 12 bit resolution
Silicon version 001
Invert the channel voltage
FE BW setting
FE gain setting
Breaks the automatic gain control loop to
use the AGC registers in a static mode
Breaks the offset compensation loop to use
the offset registers in a static mode
Interrupt gate mode
low values = strong magnetic field
high values = weak magnetic field
0 = mode 0
1 = mode1
Description
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