MAXQ3180 Maxim, MAXQ3180 Datasheet - Page 38

• 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 designates the threshold of the CFQ pulse. This value is used to set the meter constant for the CFQ
pulse output. When the CFQ pulse accumulator exceeds the value set in this register, the CFQ pulse output is acti-
vated and the CFQ pulse accumulator is reduced by the amount in this register.
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:
Note: Bit 15 of this register must be set to zero for correct operation.
38
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
______________________________________________________________________________________
Current Gain, Phase X = A/B/C/N (X.I_GAIN) (A: 0x130, B: 0x21C, C: 0x308, N: 0x12E)
31
23
15
15
7
7
30
22
14
14
6
6
29
21
13
13
5
5
Current Gain Coefficient High Byte
Current Gain Coefficient Low Byte
X I GAIN
. _
2
28
20
12
12
4
4
14
THR2 Byte 3
THR2 Byte 2
THR2 Byte 1
THR2 Byte 0
0x00
0x10
0x00
0x00
0x40
0x00
CFQ Pulse Threshold (THR2) (0x028)
27
19
11
11
3
3
Calibration Registers
26
18
10
10
2
2
25
17
9
1
9
1
24
16
8
0
8
0