MAXQ3181 Maxim, MAXQ3181 Datasheet - Page 42
MAXQ3181
Manufacturer Part Number
MAXQ3181
Description
The MAXQ3181 is a dedicated electricity measurement front-end that collects and calculates polyphase voltage, current, active power and energy, and many other metering parameters of a polyphase load
Manufacturer
Maxim
Datasheet
1.MAXQ3181.pdf
(84 pages)
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Low-Power, Active Energy, Polyphase AFE
On every DSP cycle, the contents of the X.ACT register are tested, and, if negative, absolute values are added to
this register. When this register overflows, the ANOV bit in the X.EOVER register is set.
On every DSP cycle, the contents of the X.APP register are added to this register. When this register overflows, the
SOV bit in the X.EOVER register is set.
42
Bit:
Name:
Bit:
Name:
Bit:
Name:
Bit:
Name:
Bit:
Name:
Bit:
Name:
Bit:
Name:
Bit:
Name:
______________________________________________________________________________________
31
23
15
31
23
15
7
7
Energy, Apparent, Phase X = A/B/C (X.ES) (A: 0x1F8, B: 0x2E4, C: 0x3D0)
30
22
14
30
22
14
6
6
29
21
13
29
21
13
5
5
Energy, Real Negative, Phase X = A/B/C (X.EANEG)
Apparent Energy Byte 3
Apparent Energy Byte 2
Apparent Energy Byte 1
Apparent Energy Byte 0
Real Energy Byte 3
Real Energy Byte 2
Real Energy Byte 1
Real Energy Byte 0
28
20
12
28
20
12
4
4
27
19
11
27
19
11
3
3
(A: 0x1EC, B: 0x2D8, C: 0x3C4)
26
18
10
26
18
10
2
2
25
17
25
17
9
1
9
1
24
16
24
16
8
0
8
0
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