MAXQ3181 Maxim, MAXQ3181 Datasheet - Page 41

• 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

This register provides the raw RMS current over the most recent DSP cycle, LSB = I
On every DSP cycle, the contents of the X.ACT register are tested, and, if positive, are added to this register. When
this register overflows, the APOV bit in the X.EOVER register is set.
Bit:
Name:
Bit:
Name:
Bit:
Name:
Bit:
Name:
Bit:
Name:
Bit:
Name:
Bit:
Name:
Bit:
Name:
Low-Power, Active Energy, Polyphase AFE
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31
23
15
31
23
15
7
7
RMS Current, Phase X = A/B/C (X.IRMS) (A: 0x1CC, B: 0x2B8, C: 0x3A4)
30
22
14
30
22
14
6
6
29
21
13
29
21
13
5
5
Energy, Real Positive, Phase X = A/B/C (X.EAPOS)
RMS Current Byte 3
RMS Current Byte 2
RMS Current Byte 1
RMS Current 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: 0x1E8, B: 0x2D4, C: 0x3C0)
26
18
10
FS
26
18
10
2
2
/2
24
.
25
17
25
17
9
1
9
1
24
16
24
16
8
0
8
0
41