IC-MU150 Datasheet, PDF (29/64 Pages) IC-Haus GmbH – MAGNETIC OFF-AXIS POSITION ENCODER - POLE WIDTH 1.50MM

iC-MU150 MAGNETIC OFF-AXIS
POSITION ENCODER - POLE WIDTH 1.50MM
BiSS C interface
Rev B1, Page 29/64
0 0 ERR WRN
Zero bits
busy
OUT
cycle
MODEA
Code
0x2
Figure 16: Example of BiSS line signals
Description
BiSS-C
Table 41: MODEA: BiSS
tion timeout begins. With NTOA set to 0 the timeout is
adaptive. The timeout period t_out is calculated based
on the first MA edges as shown in Figure 4. By set-
ting NTOA to 1 a fixed timeout of 20 µs terminates the
communication frame.
The BiSS C interface serial bit stream is binary coded.
The error and warning bit is low active. Transmission
of sensor and register data is implemented. iC-MU150
needs no processing time, therefore t_busy is one mas-
ter clock cycle. For further information regarding the
BiSS-C-protocol visit www.biss-interface.com.
In BiSS protocol iC-MU150 uses fixed CRC polynomi-
als, see Table 43. The single cycle data (SCD), i.e.
the primary data which is newly generated and com-
pletely transmitted in each cycle, contains the position
data (optional multiturn + singleturn) and the error and
warning bit. The CRC value is output inverted.
NTOA
Code
0
1
Note:
Addr. 0x0B; bit 3
Description
Timeout *)
Adaptive
Fixed
t_init
20 µs
*) see I108, P. 11
Table 42: Communication Timeout
A communication frame ends when the MA pin clock
cycles stop. After the last edge on MA the communica-
data-
channel*)
SCD
(sensor)
CDM, CDS
(register)
Note:
CRC
HEX Code
0x43
0x13
Polynomial
x⁶+x¹+x⁰
x⁴+x¹+x⁰
*) explanation s. BiSS-C specification
Table 43: BiSS CRC polynomials