ST7FMC1K2B3 STMICROELECTRONICS [STMicroelectronics], ST7FMC1K2B3 Datasheet - Page 215

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

MOTOR CONTROLLER (Cont’d)
MOTOR CURRENT FEEDBACK REGISTER
(MCFR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7= RPGS: Register Page Selection:
0: Access to registers mapped in page 0
1: Access to registers mapped in page 1
Bit 6= RST: Reset MTC registers.
Software can set this bit to reset all MTC registers
without resetting the ST7.
0: No MTC register reset
1: Reset all MTC registers
Bits 5:3 = CFF[2:0]: Current Feedback Filter bits
These bits select the number of consecutive valid
samples (when the current is above the limit)
needed to generate the active event. Sampling is
done at f
Table 67. Current Feedback Filter Setting
RPGS
CFF2
7
0
0
0
0
1
1
1
1
RST
CFF1
6
PERIPH
0
0
1
1
0
0
1
1
CFF2
5
/4.
CFF0
0
1
0
1
0
1
0
1
CFF1
4
Current Feedback Samples
CFF0 CFW2 CFW1 CFW0
3
2
1
2
3
4
5
6
7
8
1
0
Bits 2:0 = CFW[2:0]: Current Window Filter bits:
These bits select the length of the blanking win-
dow activated each time PWM is turned ON. The
filter blanks the output of the current comparator.
Table 68. Current Feedback Window Setting
Note: Times are indicated for 4 MHz f
CFW2
0
0
0
0
1
1
1
1
CFW1
0
0
1
1
0
0
1
1
CFW0
0
1
0
1
0
1
0
1
ST7MC1xx/ST7MC2xx
Blanking window off
Blanking Window
0.5µs
1.5µs
2.5µs
3.5µs
1µs
2µs
3µs
PERIPH
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