Datasheet

Ip251_02b_oi_e.doc / Dez-15 Page 16 / 28
The zero position of the round-loop counter can be set by register “SSI-Offset” which allows
settings between 0 and the Round-Loop value. Register “Direction” allows to set the counting
direction of the round loop counter (0 = up, 1 = down).
The following drawings explain the coherence between original SSI encoder data, Round-Loop
setting, SSI-Offset and Direction register.
8192
2048
Round-Loop= 2048SSI-Offset= 1024
0 360
180
degrees
1024
Original SSI encoder signal
parallel output signal
Encoder 13Bit
Direction = 0
SSI-Offset = 1024
Round-Loop = 2048
8192
2048
Round-Loop= 2048SSI-Offset = 1024
0 360
180
degrees
1024
Original SSI encoder signal
Round-Loop signal
Encoder 13Bit
Direction = 1
SSI-Offset = 1024
Round-Loop = 2048