EMS22A Datasheet, PDF (2/5 Pages) Bourns Electronic Solutions – Non-Contacting Absolute Encoder

Applications
■ Material handling equipment
■ Brushless DC motor commutation
■ Robotics
■ Automotive
■ Industrial automation
■ Petroleum refinery
■ Medical
■ Office equipment
■ Audio and broadcast equipment
EMS22A - Non-Contacting Absolute Encoder
Output Type Waveform and Variant Table
Absolute Output
CSn
t CLKFE
T CLK/2 500 ns
500 ns
0
7
15
CLK
t CSn 500 ns min.
0
D0
D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 S1 S2 S3 S4 S5 P1
D9
t D0 active t D0 valid 375 ns
100 ns
Angular Position Data
Status Bits
t D0 Tristate
100 ns min.
Parity Bit
Data Content
D9:D0
S1
S2
S3
S4
S5
P1
Description
Absolute angular position data
End of offset compensation algorithm
Cordic overflow indicating an error in cordic part
Linearity alarm
Increase in magnitude
Decrease in magnitude
Even parity for detecting bits 1-15 transmission error
μC
Data IN
EMS22
1st Device
DO PROG
CSn CLK
EMS22
2nd Device
DO PROG
CSn CLK
EMS22
Last Device
DO PROG
CSn CLK
CLK
CSn
Daisy Chain Hardware Configuration
CSn
tCLK _FE TCLK/2
CLK
1
8
16 D 1 2 3
DO
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
OCF
COF
LIN
Mag Mag Even
INC DEC PAR
D9 D8 D7
tDO _active
t _{DO valid}
Angular Position Data
1st Device
Status Bits
Angular Position Data
2nd Device
Daisy Chain Mode Data Transfer
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.