Broadcom HEDS-9922PRGEVB User Manual

HEDS-9922PRGEVB
HEDS-9922EVB
Magnetic Encoder IC Programming Kit
Evaluation Board
Description
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The Broadcom AEAT-9922 is an angular magnetic rotary
sensor that provides accurate angular measurement over a
full 360 degrees of rotation.
A sophisticated system uses integrated Hall sensor
elements with complex analog and digital signal processing
within a single device. A simple two-pole magnet generates
the necessary magnetic field by rotating it in a perpendicular
direction. Wide magnetic field sensor configurations allow
On Axis (end of shaft) or Off Axis (side of shaft) modes in
application. The AEAT-9922 is a versatile solution capable
of supporting a broad range of applications with its robust
architecture to measure and deliver both absolute and
incremental signals.
The absolute angle measurement provides an instant
indication of the magnet's angular position with a selectable
and one-time programmable resolution from 10 to 18 bits.
Broadcom
When selected, its positioning data is then represented in its
digital form to be assessed through a standard SSI (parity)
and SPI (with CRC and Parity option) communication
protocol. Where desired, users may also choose to receive
its absolute angle position in PWM-encoded output signals
(with CRC). The incremental positions are indicated on ABI
and UVW signals with wide user configurable resolution
from 1 CPR and up to 10,000 CPR of ABI signals and pole
pairs from 1- to 32-pole pairs (2 to 64 poles) for UVW
commutation signals.
For ease of setup, Broadcom has made available
development tools to perform the calibration process
without other measurement equipment. These
programming kits and evaluation boards are available
through the normal Broadcom sales channels.
User Guide
HEDS-9922-UG101
April 30, 2021