iC-MN 25-BIT NONIUS ENCODER
WITH 3-CH. SAMPLING 13-BIT Sin/D INTERPOLATION
Rev D1, Page 38/59
I/O INTERFACE with EXTENDED FUNCTIONS
NBISS
Addr. 0x3F; bit 3
Protocol
Protocol
Code
For the fast and safe transmission of converter data iC-
MN’s serial I/O interface has a BiSS C protocol which
enables bidirectional register communication without
changing the permanent cyclic data output. In order to
simplify master implementation at the control unit end
this protocol does not utilize multicycle data.
0
1
1
BiSS C protocol (NC_BiSS = 0, RSSI = 1)
Advanced SSI protocol (NC_BiSS = 0)
SSI protocol (NC_BiSS = 1)
Table 57: Interface protocol
Alternatively, an advanced SSI protocol can be se-
lected which permits unidirectional register communi-
cation for the transferral of parameters from the master
to the slave iC-MN.
TOS
Code
00
Addr. 0x4C; bit 1:0
Timeout tout
typ. 16 µs
Internal clock counts
31-32
15-16
3-4
01
typ. 8 µs
10
typ. 2 µs
11
typ. 1 µs
1-2
4
fosc
Notes
One clock count is equal to
(see Char. A01)
Table 58: Timeout
Figure 16: Example of line signals for BiSS C protocol
Figure 17: Example of line signals for Advanced SSI protocol
ICHAUS [ IC-HAUS GMBH ]
