iC-NQC
13-bit Sin/D CONVERTER WITH SIGNAL CALIBRATION
Rev B1, Page 16/29
ZPOS
Code
0x00
0x08
0x10
0x18
0x01
...
Adr 0x01, Bit 4:0
CFGZ
Code
Adr 0x02, Bit 1:0
Length
Position
0°
0x00
90°
90°
0x01
180°
180°
0x02.. 03
Synchronization
270°
Table 23: Zero signal length
11.25° (1 x 11.25°)
...
0x1F
Notes
348.75° (31 x 11.25°)
CFGAB
Code
0x00
Adr 0x03, Bit 5:4
Z = 1 for
The zero signal is only output if released by the
input pins (for instance with PZERO = 5 V, NZERO =
VREF).
B = 1, A = 1
B = 0, A = 1
B = 1, A = 0
B = 0, A = 0
0x01
0x02
Table 22: Zero signal position
0x03
Table 24: Zero signal logic
SIN
COS
A
B
Z (CFGZ= 0)
Z (CFGZ= 1)
Z (CFGZ= 2)
-180°
-90°
0°
45°
90°
180°
Winkel
Figure 12: Incremental output signals for various zero signal lengths.
Example gives a resolution of 64 (SELRES = 0x0A), a zero signal position of 45° (ZPOS = 0x04,
CFGAB = 0x00) and no inversion of the direction of rotation (ROT = 0x00, COS leads SIN).
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