Datasheet

Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
EMS22A - Non-Contacting Absolute Encoder
Output Type Waveform and Variant Table
Applications
■ Material handling equipment
■ Brushless DC motor commutation
■ Robotics
■ Automotive
■ Industrial automation
■ Petroleum refi nery
■ Medical
■ Offi ce equipment
■ Audio and broadcast equipment
CSn
CLK
D0
t CSn 500 ns min.
t CLKFE
500 ns
t D0 Tristate
100 ns min.
T CLK/2 500 ns
01507
Status BitsAngular Position Data Parity Bit
t
D0 valid 375 nst D0 active
100 ns
D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 S1 S2 S3 S4 S5 P1 D9
EMS22μC
1st Device
Data IN DIDO DIDO DIDO
CLKCSnCLKCSnCLK
Daisy Chain Hardware Configuration
Daisy Chain Mode Data Transfer
CLK
CSn
CSn
2nd Device Last Device
EMS22 EMS22
D6D7D9
CSn
CLK FE
t
DO active
t
18 16D123
CLK/2
T
CLK
DO
Angular Position Data
D8 D5 D1D2D4 D3 D0
Even
PAR
Mag
DEC
Mag
INC
LINCOFOCF
D9 D8 D7
DO valid
t
Angular Position DataStatus Bits
2nd Device1st Device
Data Content Description
D9:D0 Absolute angular position data
S1 End of offset compensation algorithm
S2 Cordic overfl ow indicating an error in cordic part
S3 Linearity alarm
S4 Increase in magnitude
S5 Decrease in magnitude
P1 Even parity for detecting bits 1-15 transmission error
Absolute Output