MAXQ3181 Maxim, MAXQ3181 Datasheet - Page 68

• 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

Low-Power, Active Energy, Polyphase AFE
This register configures the time slot normally assigned to the temperature measurement device. This register is
managed by the firmware and should not be modified by the host. Changing this register can result in unpredictable
results.
68
Bit:
Name:
Reset:
BIT
7:4
2:0
______________________________________________________________________________________
3
DADCNV
ADCMX
NAME
PGG
7
Analog Input Select. This four-bit field determines which of the following analog inputs are sampled during
this time slot.
0000 = V0P - VN
0001 = V1P - VN
0010 = V2P - VN
0011 = I0P - I0N
0100 = I1P - I1N
0101 = I2P - I2N
0110 = INP - VN
0111 = Auto-zero ADC
1xxx = Temperature
By default, this register is set to 1000.
ADC Disable. When set, disables the ADC for this time slot.
Programmable Gain Amplifier Select. This three-bit field configures the programmable-gain amplifier at
the front end of the analog input. The field has the following values:
000 = Gain of 1
001 = Gain of 2
010 = Gain of 4
011 = Gain of 8
100 = Gain of 16
101 = Gain of 32
All other values are reserved and can cause unpredictable behavior if selected. This register is managed
by the firmware and should not be modified by the host.
6
Time Slot Assignment—Temperature Channel (SCAN_TE) (0x00F)
ADCMX
0x8
5
4
FUNCTION
DADCNV
3
1
2
PGG
0x2
1
0