71M6515H
A Maxim Integrated Products Brand
Energy Meter IC
DATA SHEET
JULY 2011
Value in Pulse
Source Register
Name
Description
(hex)
0x10
0x11
0x12
0x13
0x14
0x15
0x16
(dec)
16
17
18
19
20
21
22
VASQSUM
VBSQSUM
VCSQSUM
WSUM_I
WASUM_I
WBSUM_I
WCSUM_I
The sum of squared voltage samples from each element.
LSB = 9.4045*10-13 VMAX2 V2h
Imported Energy: W0SUM_I + W1SUM_I + W2SUM_I
Imported energy from individual wattmeter elements. Never negative.
LSB = 9.4045*10-13 VMAX IMAX / In_8 Wh
Imported VARh:
0x17
23
VARSUM_I
VAR0SUM_I + VAR1SUM_I + VAR2SUM_I
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
24
25
26
27
28
29
30
VARASUM_I
VARBSUM_I
VARCSUM_I
WSUM_E
WASUM_E
WBSUM_E
WCSUM_E
Exported reactive energy from individual wattmeter elements. Never negative.
LSB = 9.4045*10-13 VMAX IMAX / In_8 VARh
Exported Energy: W0SUM_E + W1SUM_E + W2SUM_E
Exported energy from individual wattmeter elements. Never negative.
LSB = 9.4045*10-13 VMAX IMAX / In_8 Wh
Exported VARh:
0x1F
31
VARSUM_E
VAR0SUM_E + VAR1SUM_E + VAR2SUM_E
0x20
0x21
0x22
32
33
34
VARASUM_E
VARBSUM_E
VARCSUM_E
Exported reactive energy from individual wattmeter elements. Never negative.
LSB = 9.4045*10-13 VMAX IMAX / In_8 VARh
Connects the pulse generator to the WSUM or VARSUM values internally
calculated by the CE. Not selectable for PULSE3 and PULSE4 pulse generators.
Indicates that the host will provide values in the APULSER, APULSEW,
APULSE3, and APULSE4 registers and that the pulse generator should be up-
dated on the next READY interrupt..
0x23
35
Internal (CE)
External
(host)
0x24
36
Table 6: Pulse Sources Defined by the PULSE_SRCS Register (2/2)
WRATE (0x2D)
This register controls the rate of the pulse generation for the PULSEW, PULSER, PUSE3 and PULSE4 output pins. The
inverse pulse rate, expressed as Wh per pulse is:
VMAX IMAX
(X = value formed by PULSE_SLOW and
Kh =
1.5757 Wh / Pulse
In _ 8 ⋅ SUM _ CYCLES ⋅WRATE ⋅ X
PULSE_FAST bits in the CONFIG register)
Page: 35 of 60
© 2005−2011 Teridian Semiconductor Corporation
1.6
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
