IC-TW2 Datasheet, PDF (13/30 Pages) IC-Haus GmbH – 8-BIT SIN/COS INTERPOLATION IC WITH INTEGRATED EEPROM

iC-TW2 8-BIT SIN/COS INTERPOLATION IC
WITH INTEGRATED EEPROM
AB Quadrature And Up/Down and Incr/Dir Modes
Rev D3, Page 13/30
Sensor
position
0
1
2
3
4
5
6
5
4
32
A/B ^A_U
mode 0 ^B_V
up / dn ^A_U
mode 1 ^B_V
inc / dir A_U
mode 2 B_V
Figure 4: Incremental output modes (mode 0, 1, 2)
IPOS(7:0)
Code
0
1
2
...
...
255
Note:
Addr. 0x03; bit 7:0
R/W
Function, defaults to eeprom setting
No offset
1 increment offset
2 increments offset
...
Index pulse will shifted by IWIDTH(7:0) increments.
Programmed value is within the range of 0 to
INTER(7:0) - 1.
...
255 increments offset
A fixed phase relation to A/B is guaranteed only
with
STARTUP(1:0) = 0b10 (’ABSOLUTE”)
or
STARTUP(1:0) = 0b11 (’BURST”).
IWIDTH(7:0)
Addr. 0x04; bit 7:0
R/W
Code
Function, defaults to eeprom setting
0
disable pulse generation
1
1 increment width
2
2 increments width
...
...
Any other
value n
Index pulse will extend over IWIDTH(7:0)
increments.
Programmed value is within the range of 0 to
INTER(7:0) - 1.
...
...
255
255 increments width
Table 13: Index pulse width selection
Table 12: Index pulse position