71m6515h Maxim Integrated Products, Inc., 71m6515h Datasheet - Page 33

• Manufacturer Part Number: 71m6515h
• Description: 71m6515h Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

WRATE (0x2D)
Page: 33 of 57
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:
Source Register
Value in Pulse
0x1A
0x1B
0x1C
0x1D
0x1E
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1F
0x20
0x21
0x22
0x23
0x24
(hex)
Kh
=
In
(dec)
_
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
8
⋅
SUM
VARCSUM_E
VARASUM_E
VARBSUM_E
Internal (CE)
VARASUM_I
VARBSUM_I
VARCSUM_I
VARSUM_E
Table 6: Pulse Sources Defined by the PULSE_SRCS Register (2/2)
VMAX
VARSUM_I
WASUM_E
WBSUM_E
WCSUM_E
VASQSUM
VBSQSUM
VCSQSUM
WCSUM_I
WASUM_I
WBSUM_I
WSUM_E
WSUM_I
External
_
Name
(host)
CYCLES
IMAX
© 2005-2008 TERIDIAN Semiconductor Corporation
⋅
WRATE
Description
The sum of squared voltage samples from each element.
LSB = 9.4045*10
Imported Energy: W0SUM_I + W1SUM_I + W2SUM_I
Imported energy from individual wattmeter elements. Never negative.
LSB = 9.4045*10
Imported VARh:
Exported reactive energy from individual wattmeter elements. Never negative.
LSB = 9.4045*10
Exported Energy: W0SUM_E + W1SUM_E + W2SUM_E
Exported energy from individual wattmeter elements. Never negative.
LSB = 9.4045*10
Exported VARh:
Exported reactive energy from individual wattmeter elements. Never negative.
LSB = 9.4045*10
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..
VAR0SUM_I + VAR1SUM_I + VAR2SUM_I
VAR0SUM_E + VAR1SUM_E + VAR2SUM_E
⋅
X
. 1
5757
-13
-13
-13
-13
-13
VMAX IMAX / In_8 Wh
VMAX
VMAX IMAX / In_8 Wh
VMAX IMAX / In_8 VARh
VMAX IMAX / In_8 VARh
Wh
2
V
/
Pulse
2
h
(X = value formed by PULSE_SLOW and
PULSE_FAST bits in the CONFIG register)
Energy Meter IC
DATA SHEET
71M6515H
MARCH 2008
V1.4