MAXQ3181 Maxim, MAXQ3181 Datasheet - Page 69

• 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

The MAXQ3181 can monitor the RMS value of one auxiliary channel in addition to its normal processing. The
Auxiliary Channel Configuration register selects which input the auxiliary channel processes and what processing is
applied to the auxiliary channel.
This register contains the system clock frequency in kHz units. Because the default frequency is 8MHz, this register
defaults to 0x1F40.
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
15:7
BIT
2:0
6
AUX_MUX
Low-Power, Active Energy, Polyphase AFE
ENAUX
NAME
—
______________________________________________________________________________________
15
15
—
—
0
7
0
7
Reserved.
Enable Auxiliary Channel. When set, enables auxiliary channel processing.
Auxiliary Channel Input Select. This three-bit field selects the input to be processed by the auxiliary
channel.
001 = I
ENAUX
N
14
14
—
0
6
0
6
13
13
—
—
0
5
0
5
System Clock Frequency High Byte
System Clock Frequency Low Byte
Auxiliary Channel Configuration (AUX_CFG) (0x010)
12
—
—
12
0
4
0
4
System Clock Frequency (SYS_KHZ) (0x012)
0x1F
0x40
FUNCTION
11
11
—
—
0
3
0
3
DSP System Configuration
10
—
10
0
2
0
2
AUX_MUX
—
Neutral Current
9
0
1
0
9
1
—
8
0
0
0
8
0
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