90E32 Datasheet, PDF (59/71 Pages) Integrated Device Technology – Poly-Phase High-Performance Wide-Span Energy Metering IC

90E32
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Table-12 Fundamental/ Harmonic Power and Voltage/ Current RMS Registers
Register
Address
Register Name
Read/Write
Type
Functional Description
Comment
D5H
PmeanAH
D6H
PmeanBH
D7H
PmeanCH
R
phase A active harmonic power
R
phase B active harmonic power
Complement, 16-bit integer with unit of 1Watt.
1LSB corresponds to 1Watt
R
phase C active harmonic power
D9H
UrmsA
R
phase A voltage RMS
DAH
UrmsB
R
phase B voltage RMS
1LSB corresponds to 0.01 V
DBH
UrmsC
R
phase C voltage RMS
DCH
IrmsN0
R
N Line calculated current RMS
DDH
IrmsA
DEH
IrmsB
R
phase A current RMS
unsigned 16-bit integer with unit of 0.001A
R
phase B current RMS
1LSB corresponds to 0.001 A
DFH
IrmsC
R
phase C current RMS
E0H
PmeanTFLSB
R
Lower word of Total active fundamental Power
Lower word of D0H register.
1LLSB^* corresponds to 4/256 Watt
E1H
PmeanAFLSB
R
Lower word of phase A active fundamental
Power
E2H
PmeanBFLSB
R
Lower word of phase B active fundamental
Power
Lower word of registers from D1H to D3H.
1LLSB corresponds to 1/256 Watt
E3H
PmeanCFLSB
R
Lower word of phase C active fundamental
Power
E9H
UrmsALSB
EAH
UrmsBLSB
EBH
UrmsCLSB
R
Lower word of phase A voltage RMS
R
Lower word of phase B voltage RMS
Lower word of registers from D9H to DBH.
1LLSB corresponds to 0.01/256V
R
Lower word of phase C voltage RMS
EDH
IrmsALSB
EEH
IrmsBLSB
EFH
IrmsCLSB
R
Lower word of phase A current RMS
R
Lower word of phase B current RMS
Lower word of registers from DDH to DFH.
1LLSB corresponds to 0.001/256A
R
Lower word of phase C current RMS
Note: All the lower 8 bits of C0H-CBH registers and E0H-EFH registers are always zero. Only the higher 8 bits of these registers are valid.
In this document, LLSB means bit 8 of the lower registers as below:
b15 b14 b13 b12 b11 b10 b9
b8
b7
b6
b5
b4
b3
b2
b1 b0
(LLSB)
6.6.3 THD+N, FREQUENCY, ANGLE AND TEMPERATURE REGISTERS
Table-13 THD+N, Frequency, Angle and Temperature Registers
Register
Address
F1H
F2H
F3H
F5H
F6H
F7H
F8H
F9H
FAH
FBH
Register Name
THDNUA
THDNUB
THDNUC
THDNIA
THDNIB
THDNIC
Freq
PAngleA
PAngleB
PAngleC
Read/Write
Type
R
R
R
R
R
R
R
R
R
R
Functional Description
phase A voltage THD+N
phase B voltage THD+N
phase C voltage THD+N
phase A current THD+N
phase B current THD+N
phase C current THD+N
Frequency
phase A mean phase angle
phase B mean phase angle
phase C mean phase angle
Comment
1LSB corresponds to 0.01%
1LSB corresponds to 0.01%
1LSB corresponds to 0.01% Hz
Signed, MSB as the sign bit
1LSB corresponds to 0.1-degree,
-180.0°~+180.0°
Register
59
December 9, 2011