71M6543F Datasheet, PDF (24/157 Pages) Maxim Integrated Products – Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation

71M6543F/H Data Sheet
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Table 6: I/O RAM Control Bits for Isolated Sensor
Name
RCMD[4:0]
Address
SFR
FC[4:0]
RST WAKE
Default Default
0
0
R/W Description
When the MPU writes a non-zero value to RCMD,
the 71M6543 issues a command to the cor-
R/W
responding isolated sensor selected with
RCMD[1:0]. When the command is complete, the
71M6543 clears RCMD[4:2]. The command code
itself is in RCMD[4:2].
PERR_RD SFR FC[6]
PERR_WR SFR FC[5]
0
The 71M6543 sets these bits to indicate that a
0
R/W
parity error on the isolated sensor has been de-
tected. Once set, the bits are remembered until
they are cleared by the MPU.
CHOPR[1:0] 2709[7:6] 00
The CHOP settings for the isolated sensors.
00 – Auto chop. Change every multiplexer frame.
00 R/W 01 – Positive
10 – Negative
11 – Same as 00
TMUXR2[2:0] 270A[2:0] 000
000 R/W The TMUX bits for control of the isolated sensor.
TMUXR4[2:0] 270A[6:4] 000
000 R/W The TMUX bits for control of the isolated sensor.
TMUXR6[2:0] 2709[2:0] 000
000 R/W The TMUX bits for control of the isolated sensor.
RMT_RD[15:8] 2602[7:0]
RMT_RD[7:0] 2603[7:0]
0
0
R The read buffer for 71M6xx3 read operations.
RFLY_DIS 210C[3]
0
Controls how the 71M6543 drives the 71M6xx3
0
R/W
power pulse. When set, the power pulse is driven
high and low. When cleared, it is driven high
followed by an open circuit fly-back interval.
RMT2_E
2709[3]
0
Enables the isolated remote sensor interface and
0 R/W re-configures pins IADC2-IADC3 as a balanced
pair digital remote interface.
RMT4_E
2709[4]
0
Enables the isolated remote sensor interface and
0 R/W re-configures pins IADC4-IADC5 as a balanced
pair digital remote interface.
RMT6_E
2709[5]
0
Enables the isolated remote sensor interface and
0 R/W re-configures pins IADC6-IADC7 as a balanced
pair digital remote interface.
Refer to Table 71 starting on page 104 for more complete details about these I/O RAM locations.
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