AS5046 12-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER
Demoboard Operation Manual
Revision 1.1, 3-Jun-08 www.austriamicrosystems.com
Page 8 of 21
3.3.2
Registers
The 2-wire interface of the AS5046 enables to address, read and write four register regions described in the following.
SIU Serial Interface User:
The absolute angle information is displayed in analog and digital
form. It is calculated as: degree = (360/4096*absolute position).
Automatic Gain Control:
This indicator displays the absolute encoder position as a 12-bit value.
Each digit corresponds to (360 degrees / 4096) = 0.0879 degrees. The
range of the serial absolute output is always 0 to 4095.
Front End:
The voltage meter shows the value outputted by Vout when the
feedback and DACref is at default.
CORDIC Sin / Cos:
Three lights indicate the magnetic input field of the encoder (Red,
Yellow, Green)
