6 71m6542f using 71m6x01 and current shunts, 71m6542f using 71m6x01 and current shunts, Figure 38: 71m6542f with 71m6x01 isolated sensor – Rainbow Electronics 71M6542G User Manual
Page 96: Figure 38
96
© 2008–2011 Teridian Semiconductor Corporation
v1.1
4.6
71M6542F Using 71M6x01 and Current Shunts
shows a typical two-phase connection for the 71M6542F using one isolated and one non-isolated
sensor. For best performance, the IAP-IAN current sensor input is configured for differential mode (i.e.,
DIFFA_E = 1, I/O RAM 0x210C[4]). The 71M6x01 Isolated Sensor Interface is used to isolate phase B. The
outputs of the 71M6x01 Isolated Sensor Interface are routed through a pulse transformer, which is
connected to the pins IBP-IBN. The IBP-IBN pins must be configured for remote sensor communication
(i.e., RMT_E =1, I/O RAM 0x2709[3]). See
for the AFE configuration corresponding to
MPU
RTC
TIMERS
IAP
VA
IBP
XIN
XOUT
RX
TX
TX
RX
COM0...5
V3P3A V3P3SYS
VBAT
VBAT_RTC
SEG
GNDA GNDD
SEG/DIO
DIO
ICE
PHASE A
NEUTRAL
LOAD
8888.8888
PULSES,
DIO
IR
AMR
POWER FAULT
COMPARATOR
MODUL-
ATOR
SERIAL PORTS
OSCILLATOR/
PLL
MUX and ADC
LCD DRIVER
DIO, PULSES
COMPUTE
ENGINE
FLASH
MEMORY
RAM
32 kHz
REGULATOR
Shunt
POWER SUPPLY
TERIDIAN
71M6542F
TEMPERATURE
SENSOR
VREF
BATTERY
PWR MODE
CONTROL
WAKE-UP
PHASE A
I
2
C or µWire
EEPROM
IAN
IBN
RTC
BATTERY
V3P3D
BATTERY
MONITOR
SPI INTERFACE
HOST
LCD DISPLAY
Resistor Dividers
Pulse
Trans-
former
TERIDIAN
71M6XX1
PHASE B
LOAD
VB
NEUTRAL
PHASE A
Shunt
Note:
This system is referenced to PHASE A
Figure 38: 71M6542F with 71M6x01 Isolated Sensor