iC-MR 13-BIT S&H SIN/COS
INTERPOLATOR WITH CONTROLLER INTERFACES
Rev A1, Page 27/44
Interpolation
Period Counter
-
MTOFF
STOFF
Multiturn
Singleturn
24 bit
26 bit
Figure 14: Setting the offset
STRESO selects the internal resolution of the single- If required, MTRESO selects the internal resolution of
turn data for the serial interface in SPI protocol and the multiturn data for the serial interface in SPI proto-
the parallel interface. If the internal resolution is re- col and the parallel interface. If the internal resolution
duced, the data is output flush left. Should a longer is reduced, the multiturn data is output flush right. The
output data length thus be required, the data is filled upper bits are zeroed. The output data length is de-
with zeros. This generates a permanently contiguous pendent on the selected output interface.
position data word from the right-aligned multiturn data
and the left-aligned singleturn data. The interpolator
data resolution of 13 bits is fixed; only its length in the
position data word can be selected using CODERES
(Table 37).
MTRESO
Code
0x0
Addr. 0x24; bit 7...5
R/W
Multiturn resolution
24 bit
20 bit
16 bit
12 bit
8 bit
0x1
0x2
STRESO
Code
0x00
0x01
...
Addr. 0x24; bit 4...0
Singleturn resolution
R/W
0x3
0x4
26 bit
25 bit
...
0x5
4 bit
0x6
0 bit
0x7
0 bit
0x0E
...
12 bit
...
Note
Not valid for serial interface with BiSS/SSI protocol
Table 42: Multiturn resolution
0x19
0x1A
...
1 bit
0 bit
...
0x1F
Note
0 bit
Not valid for serial interface with BiSS/SSI protocol
Table 41: Singleturn resolution
24 bit
26 bit
Multiturn
Singleturn
MTRESO
STRESO
Position Data
Figure 15: Reducing the internal data length
ICHAUS [ IC-HAUS GMBH ]
