Rainbow Electronics 71M6542G - Manual (Page 113)

v1.1 © 2008–2011 Teridian Semiconductor Corporation 113
Name Location Rst Wk Dir Description
DIO_PV 2457[6] 0 – R/W Causes VARPULSE to be output on pin SEGDIO1, if LCD_MAP[1] = 0.
DIO_PW 2457[7] 0 – R/W Causes WPULSE to be output on pin SEGDIO0, if LCD_MAP[0] = 0.
DIO_PX 2458[7] 0 – R/W Causes XPULSE to be output on pin SEGDIO6 , if LCD_MAP[6] = 0.
DIO_PY 2458[6] 0 – R/W Causes YPULSE to be output on pin SEGDIO7 , if LCD_MAP[7] = 0.
EEDATA[7:0] SFR 9E 0 0 R/W Serial EEPROM interface data.
EECTRL[7:0] SFR 9F 0 0 R/W
Serial EEPROM interface control.
Status
Bit
Name
Read/
Write
Reset
State
Polarity Description
7 ERROR R 0 Positive
1 when an illegal command
is received.
6 BUSY R 0 Positive 1 when serial data bus is
busy.
5 RX_ACK R 1 Positive
1 indicates that the
EEPROM sent an ACK bit.
EQU[2:0] 2106[7:5] 0 0 R/W
Specifies the power equation.
EQU
Watt & VAR Formula
(WSUM/VARSUM)
Inputs Used for Energy/Current
Calculation
W0SUM/
VAR0SUM
W1SUM/
VAR1SUM
I0SQ
SUM I1SQ
SUM
0
VA*IA
1 element, 2W 1
φ
VA*IA VA*IB
1
IA IB
1
1
VA*(IA-IB)/2
1 element, 3W 1
φ
VA*(IA-IB)/2 – IA-IB IB
2
†
VA*IA + VB*IB
2 element, 3W 3
φ Delta
VA*IA VB*IB IA IB
Note:
1. Optionally, IB may be used to measure neutral current.
†
71M6542F only