MAXQ3181 Datasheet, PDF (34/84 Pages) Maxim Integrated Products – Low-Power, Active Energy, Polyphase AFE

Low-Power, Active Energy, Polyphase AFE
Bit:
Name:
Reset:
CFP Pulse Threshold (THR1) (0x022)
31
30
29
28
27
26
25
24
THR1 Byte 3
0x00
Bit:
Name:
Reset:
23
22
21
20
19
18
17
16
THR1 Byte 2
0x10
Bit:
15
14
13
12
11
10
9
8
Name:
THR1 Byte 1
Reset:
0x00
Bit:
Name:
Reset:
7
6
5
4
3
2
1
0
THR1 Byte 0
0x00
This register designates the threshold of the CFP pulse. This value is used to set the meter constant for the CFP
pulse output. When the CFP pulse accumulator exceeds the value set in this register, the CFP pulse output is acti-
vated and the CFP pulse accumulator is reduced by the amount in this register.
Calibration Registers
Current Gain, Phase X = A/B/C/N (X.I_GAIN) (A: 0x130, B: 0x21C, C: 0x308, N: 0x12E)
Bit:
15
14
13
12
11
10
9
8
Name:
Current Gain Coefficient High Byte
Reset:
0x40
Bit:
7
6
5
4
3
2
1
0
Name:
Current Gain Coefficient Low Byte
Reset:
0x00
This register contains gain coefficient for phase X current channel. The raw values are taken from the selected mea-
surement quantity and scaled by the factor:
X.I_ GAIN
2¹⁴
Note: Bit 15 of this register must be set to zero for correct operation.
34 ______________________________________________________________________________________