MAXQ3181 Maxim, MAXQ3181 Datasheet - Page 75

• 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 specifies the time in ADC sample periods (default 40μs) that must elapse following a zero-crossing
event before the MAXQ3181 declares a “no-zero crossing” fault. When this fault is declared, the NOZXF bit in the
X.FLAGS register is set.
This register specifies the duration of SPI timeout in ADC frames (default 320μs).
This register specifies the time in DSP cycles that the MAXQ3181 waits before accumulating energy. If this register is
nonzero, it is decremented on each DSP cycle. If the result of the decrement is nonzero, the results of the DSP cycle
are discarded and are not accumulated to the energy registers. This register is useful for delaying the initiation of
energy accumulation on startup or after some hardware function has been modified.
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Bit:
Name:
Reset:
Low-Power, Active Energy, Polyphase AFE
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15
15
15
7
7
7
14
14
14
6
6
6
13
13
13
5
5
5
Energy Accumulation Timeout High Byte
Energy Accumulation Timeout Low Byte
Communications Timeout High Byte
Communications Timeout Low Byte
Zero-Crossing Timeout High Byte
Zero-Crossing Timeout Low Byte
Energy Accumulation Timeout (ACC_TIMO) (0x058)
Communications Timeout (COM_TIMO) (0x056)
12
12
12
4
4
4
Zero-Crossing Timeout (NZX_TIMO) (0x054)
0x23
0x28
0x03
0xE8
0x00
0x05
11
11
11
3
3
3
10
10
10
2
2
2
9
1
9
1
9
1
Timeouts
8
0
8
0
8
0
75