ST7FMC1K2B3 STMICROELECTRONICS [STMicroelectronics], ST7FMC1K2B3 Datasheet - Page 226

• Manufacturer Part Number: ST7FMC1K2B3
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST7MC1xx/ST7MC2xx
MOTOR CONTROLLER (Cont’d)
MOTOR Z EVENT FILTER REGISTER (MZFR)
Read/Write
Reset Value: 0000 1111 (0Fh)
Bits 7:4 = ZEF[3:0]: Z Event Filter bits
These bits select the number of valid consecutive
Z events (when the Z event is detected) needed to
generate the active event. Sampling is done at the
selected f
PWM frequency.
Table 80. Z Event filter Setting
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ZEF3 ZEF2 ZEF1 ZEF0
ZEF3
7
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
ZEF2
6
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
SCF
ZEF1
5
frequency (see
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
ZEF0
4
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
ZWF3 ZWF2 ZWF1 ZWF0
3
Z event Samples
Table
2
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
82.) or at
1
0
Bits 3:0 = ZWF[3:0]: Z Window Filter bits
These bits select the length of the blanking win-
dow activated at each D event. The filter blanks
the Z event detection until the end of the time win-
dow.
Table 81. Z Window filter Setting
Note: Times are indicated for 4 MHz f
ZWF3 ZWF2 ZWF1 ZWF0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
D to Z window fil-
ter in Sensorless
Mode (SR=0)
100 µs
120 µs
140 µs
160 µs
180 µs
200 µs
10 µs
15 µs
20 µs
25 µs
30 µs
35 µs
40 µs
60 µs
80 µs
5 µs
PERIPH
SR=1
event
Filter
Win-
after
dow
No
D