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PDS_6545_009
71M6545/71M6545H Data Sheet
in RMT_RD[15:8] and RMT_RD[7:0] . The MPU selects which of the three phases is read by asserting the
proper code in the RCMD[1:0] field, as shown in Table 4 .
Table 5: Remote Interface Read Commands
RCMD[4:2]
001
001
010
010
010
TMUXRn[2:0]
00X
11X
00X
01X
10X
Read Operation
TRIMT[7:0]
(trim fuse for all 71M6xx3)
TRIMBGB[7:0] and
TRIMBGD[7:0]
(additional trim fuses for
71M6113 and 71M6203 only)
STEMP[10:0]
(sensed 71M6xx3 temperature)
VSENSE[7:0]
(sensed 71M6xx3 supply voltage)
VERSION[7:0]
(chip version)
RMT_RD [15:8]
TRIMT[7]=RMT_RD[8]
TRIMBGB[7:0]
STEMP[10:8]=RMT_RD[10:8]
(RMT_RD[15: 11] are sign extended)
All zeros
VERSION[7:0]
RMT_RD [7:0]
TRIMT[6:0]=RMT_RD[7:1]
TRIMBGD[7:0]
STEMP[7:0]
VSENSE[7:0]
All zeros
Notes:
1.
2.
3.
4.
TRIMT[7:0] is the VREF trim value for all 71M6xx3 devices. Note that the TRIMT[7:0] 8-bit value is formed
by RMT_RD[8] and RMT_RD[7:1]. See the 71M6xxx Data Sheet for the equations related to TRIMT[7:0]
and the corresponding temperature coefficient.
TRIMBGB[7:0] and TRIMBGD[7:0] are trim values used for characterizing the 71M6113 (0.5%) and 71M6203
(0.1%) over temperature. See the 71M6xxx Data sheet for the equations related to TRIMBGB[7:0] and
TRIMBGD[7:0] and the corresponding temperature coefficients.
See 2.5.6 71M6xx3 Temperature Sensor on page 54 .
See 2.5.8 71M6xx3 VCC Monitor on page 55 .
With hardware and trim-related information on each connected 71M6xx3 Isolated Sensor available to the
71M6545/H, the MPU can implement temperature compensation of the energy measurement based on the
individual temperature characteristics of the 71M6xx3 Isolated Sensors. See 4.5 Metrology Temperature
Compensation for details.
Table 6 shows all I/O RAM registers used for control of the external 71M6xx3 Isolated Sensors. See the
71M6xx3 Data Sheet for additional details.
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