Intelligent Motion Systems Motion Detector operating instructions 0x5 50 kHz

Models: Motion Detector

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0x5 (50 kHz)

Typical PWM Mask Settings (Currents Balanced)

Mask

Mask

REVTM

FORTM

 

 

(hex)

(dec)

 

 

 

0x00

0

600 ns

600 ns

 

0x11

17

700 ns

700 ns

 

0x22

34

800 ns

800 ns

 

0x33

51

900 ns

900 ns

 

0x44

68

1.0 µs

1.0 µs

 

0x55

85

1.1 µs

1.1 µs

 

0x66

102

1.2 µs

1.2 µs

 

0x77

119

1.4 µs

1.4 µs

 

Mask

Mask

REVTM

FORTM

(hex)

(dec)

0x88

135

1.6 µs

1.6 µs

0x99

153

1.8 µs

1.8 µs

0xAA

170

2.0 µs

2.0 µs

0xBB

187

2.2 µs

2.2 µs

0xCC

204

2.5 µs

2.5 µs

0xDD

221

2.8 µs

2.8 µs

0xEE

238

3.1 µs

3.1 µs

0xFF

255

3.4 µs

3.4 µs

Table 2.6.7: Typical PWM Mask Settings

Maximum PWM Duty Cycle (%) Parameter

This parameter sets the maximum duty cycle as a percentage of the bridge PWM oscillator period. The range for this parameter is 0 to 95%. The default value for this parameter is 95%.

PWM Frequency Range Parameter

The PWM Frequency Parameter sets the initial and maximum frequencies for the PWM. As with the MASK parameter, the PWM Frequency is a two part 8-bit hex number which is entered as a decimal value ranging from 0 to 255.

The default for this 170 (0xAA) with an initial PWM Frequency of 20 kHz and a Maximum of 60 kHz.

Maximum PWM Frequency (kHz)

Hex Freq.

0x0 40

0x1 42

0x2 44

0x3 46

Hex Freq

0x4 48

0x5 50

0x6 52

0x7 54

Hex Freq

0x8 56

0x9 58 0xA 60

0xB 62

Hex Freq 0xC 64 0xD 66

0xE 68

0xF 70

Initial PWM Frequency (kHz)

Hex Freq.

0x0 10

0x1 11

0x2 12

0x3 13

Hex Freq

0x4 14

0x5 15

0x6 16

0x7 17

Hex Freq

0x8 18

0x9 19 0xA 20

0xB 21

Hex

Freq

0xC

22

0xD

23

0xE

24

0xF

25

Table 2.6.8: Maximum and Initial PWM Frequency

PWM Max. Frequency

PWM Initial Frequency

0

1

0

1

1

1

1

0

 

0x5 (50 kHz)

 

 

0xE (24 kHz)

 

Convert to Decimal

0x5E

Manual backgroundManual background PWM SFREQ = 94 PWM Frequency Range 24 to 50 kHz

Figure 2.6.15: PWM Frequency Range

Part 2: Interfacing and Configuring

39

Page 59
Image 59
Intelligent Motion Systems Motion Detector operating instructions 0x5 50 kHz