Specifications are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their specific applications.

EMS22A - Non-Contacting Absolute Encoder

Output Type Waveform and Variant Table

Applications

CSn

CLK

D0

500 ns

100 ns min.

0

15

07

Status Bits

Angular Position Data

Parity Bit

100 ns

D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 S1 S2 S3 S4 S5 P1

D9

EMS22

μC

1st Device

Data IN

DI

DO

DI

DO

DI

DO

CLK

CSn

CLK

CSn

CLK

Daisy Chain Hardware Configuration

Daisy Chain Mode Data Transfer

CLK

CSn

CSn

2nd Device

Last Device

EMS22

EMS22

D6

D7

D9

CSn

CLK FE

t

DO active

t

18

16

D

1

2

3

CLK/2

T

CLK

DO

Angular Position Data

D8

D5

D1

D2

D4

D3

D0

Even

PAR

Mag

DEC

Mag

INC

LIN

COF

OCF

D9

D8

D7

DO valid

t

Angular Position Data

Status Bits

2nd Device

1st Device

Data Content

Description

D9:D0

Absolute angular position data

S1

End of offset compensation algorithm

S2

Cordic overflow 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