71M6533 Datasheet, PDF (97/132 Pages) Teridian Semiconductor Corporation – Energy Meter IC

FDS_6533_6534_004
71M6533/G/H and 71M6534/H Data Sheet
5.3.5 CE Calculations
Table 55: CE EQU[2:0] Equations and Element Input Mapping
EQU[
2:0]
Watt & VAR
Formula
(WSUM/VARS
UM)
Element Input Mapping
W0SUM/ VAR0SUM
W1SUM/
VAR1SUM
VA IA
0* (1 element, 2W
VA*IA
–
1φ)
VA*(IA-IB)/2
1* (1 element, 3W
VA*(IA-IB)/2
–
1φ)
VA*IA + VB*IB
2* (2 element, 3W
3φ Delta)
VA*IA
VB*IB
VA*(IA-IB)/2 +
3*
VC*IC
(2 element, 4W
VA*(IA-IB)/2
–
3φ Delta)
VA*(IA-IB)/2 +
4*
VB*(IC-IB)/2
(2 element, 4W
3φ Wye)
VA*(IA-IB)/2
VB*(IC-IB)/2
VA*IA + VB*IB
5
+ VC*IC
(3 element, 4W
3φ Wye)
VA*IA
VB*IB
* Only EQU = 5 is supported by CE code version CE34A02D.
W2SUM/
VAR2SUM
–
–
–
VC*IC
–
VC*IC
I0SQ I1SQ I2SQ
SUM SUM SUM
IA
–
–
IA-IB IB
–
IA
IB
–
IA-IB IB IC
IA-IB IC-IB IC
IA IB IC
5.3.6 CE Front End Data (Raw Data)
Access to the raw data provided by the AFE is possible by reading addresses 0 through B as shown in
Table 56.
Table 56: CE Raw Data Access Locations
Name
IA FIR data
VA FIR data
IB FIR data
VB FIR data
IC FIR data
VC FIR data
ID FIR data
TEMP FIR data
VBAT FIR data
…
Chip ID, Version bytes
Last Address
CE
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x0A
0x0B
0x0F
0x3FF
Address
MPU
0x00
0x04
0x08
0x0C
0x10
0x14
0x18
0x28
0x2C
…
003C
…
0xFFC
Type
Input
Input
Input
Input
Input
Input
Input
Input
Input
Internal
Read
Only
Internal
Internal
Description
ADC Input data, valid at the end of the MUX
frame. The address mapping of analog
inputs to memory is hard-wired in the ADC
converter circuit.
…
Upper 16 bits are zero. Lower 16 bits are
CHIP_ID[15:8], VERSION[7:0]. This word is
read only.
…
Last Memory Location
Rev 2
97