AMM5A & AMM5B • SSI, BiSS, & RS-485
Structure of the position information
AMM5A17/1BG1...
AMM5B17/1BG1...
bit
16
…
0
AMM5A21/1BG1...
AMM5B21/1BG1...
bit
20
…
0
AMM5A23/1BG1...
AMM5B23/1BG1...
bit
22
…
0
AMM5A17/65KBG1...
AMM5B17/65KBG1...
bit
32
…
0
AMM5A21/65KBG1...
AMM5B21/65KBG1...
bit
36
…
0
AMM5A23/65KBG1...
AMM5B23/65KBG1...
bit
38
…
0
value
MSB
…
LSB
5.3 Recommended transmission rates
The SSI interface has a frequency of data transmission ranging between 100 kHz
and 4 MHz.
CLOCK IN and DATA OUT signals comply with the “EIA standard RS-422”.
The SSI clock frequency (baud rate) depends on the length of the cable and
must comply with the technical information reported in the following table:
Cable length
Baud rate
< 50 m
< 400 kHz
< 100 m
< 300 kHz
< 200 m
< 200 kHz
< 400 m
< 100 kHz
The time interval between two Clock sequence transmissions must be at least 20
µs (Tp > 20 µs).
MAN AMM5A_B SSI_BiSS_RS485 E 1.9.odt
5 - SSI interface
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