MAXQ3180 Maxim, MAXQ3180 Datasheet - Page 82

• Manufacturer Part Number: MAXQ3180
• Description: The MAXQ3180 is a dedicated electricity measurement front-end that collects and calculates polyphase voltage, current, power, energy, and many other metering and power-quality parameters of a polyphase load
• Manufacturer: Maxim

Low-Power, Multifunction, Polyphase AFE
This register specifies the b
The MSB of this register must be zero.
This register specifies the a
This register specifies the lowpass filter applied for zero-cross detection. The MSB of this register must be zero.
82
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
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15
31
23
15
15
7
7
7
1
0
(feedback) coefficient for the harmonic mode filter using the following formula:
(feed-forward) coefficient for the harmonic-mode filter using the following formula:
14
30
22
14
14
6
6
6
Harmonic Filter Feed-Forward Coefficient (B0HARM) (0x03A)
Harmonic Filter Feed-Forward Coefficient High Byte
Harmonic Filter Feed-Forward Coefficient Low Byte
Harmonic Filter Feedback Coefficient (A1HARM) (0x03C)
13
29
21
13
13
5
Harmonic Filter Feedback Coefficient Byte 3
Harmonic Filter Feedback Coefficient Byte 2
Harmonic Filter Feedback Coefficient Byte 1
5
Harmonic Filter Feedback Coefficient Byte 0
5
Zero-Cross Lowpass Filter High Byte
Zero-Cross Lowpass Filter Low Byte
b
a
0
1
=
=
B HARM
A HARM
12
28
20
12
12
4
4
4
0
1
2
2
Zero-Cross Lowpass Filter (ZC_LPF) (0x05A)
16
16
0x0B
0x00
0x91
0x00
0x00
0x18
0x31
0x00
11
27
19
11
11
3
3
3
10
26
18
10
10
2
2
2
25
17
9
1
9
1
9
1
24
16
8
0
8
0
8
0