90E21 Datasheet, PDF (20/57 Pages) Integrated Device Technology – Single-Phase High-Performance Wide-Span Energy Metering IC

90E21/22/23/24
SINGLE-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Table-11 Register List (Continued)
Register
Address
Register Name
Read/Write
Type
Functional Description
Comment^{note 1}
Page
41H
ANenergy
R/C
Reverse Active Energy
P 37
42H
ATenergy
R/C
Absolute Active Energy
P 38
43H
RPenergy
R/C
Forward (Inductive) Reactive Energy
Not applicable to the 90E21/23^{note 2}
P 38
44H
RNenergy
R/C
Reverse (Capacitive) Reactive Energy
Not applicable to the 90E21/23^{note 2}
P 39
45H
RTenergy
R/C
Absolute Reactive Energy
Not applicable to the 90E21/23^{note 2}
P 39
46H
EnStatus
R
Metering Status
different for various chips^{note 2, note 3}
P 40
Measurement Register
48H
Irms
R
L Line Current rms
P 41
49H
Urms
R
Voltage rms
P 41
4AH
Pmean
R
L Line Mean Active Power
P 42
4BH
Qmean
R
L Line Mean Reactive Power
Not applicable to the 90E21/23^{note 2}
P 42
4CH
Freq
R
Voltage Frequency
P 43
4DH
PowerF
R
L Line Power Factor
P 43
Phase Angle between Voltage and L Line
4EH
Pangle
R
Current
P 43
4FH
Smean
R
L Line Mean Apparent Power
P 44
68H
Irms2
R
N Line Current rms
Not applicable to the 90E21/22^{note 3}
P 44
6AH
Pmean2
R
N Line Mean Active Power
Not applicable to the 90E21/22^{note 3}
P 45
6BH
Qmean2
R
N Line Mean Reactive Power
Not applicable to the 90E21/22/23^{note 2, note 3} P 45
6DH
PowerF2
R
N Line Power Factor
Not applicable to the 90E21/22^{note 3}
P 46
6EH
Pangle2
Phase Angle between Voltage and N Line
R
Current
Not applicable to the 90E21/22^{note 3}
P 46
6FH
Smean2
R
N Line Mean Apparent Power
Not applicable to the 90E21/22^{note 3}
P 47
Note:
1. This register list shows all registers for the 90E24.
2. This register is related to reactive energy metering. Part of this register is invalid for the 90E21/23 which does not have reactive metering. Reading these registers
always return 0000H and writing these registers always take no effect.
3. This register is related to N line metering. Part of this register is invalid for the 90E21/22 which does not have N line metering. Reading these registers always return
0000H and writing these registers always have no effect.
Register
20
January 10, 2012