71M6541F-DB Maxim Integrated Products, 71M6541F-DB Datasheet - Page 23
71M6541F-DB
Manufacturer Part Number
71M6541F-DB
Description
Power Management Modules & Development Tools 71M6541 Eval Kit
Manufacturer
Maxim Integrated Products
Datasheet
1.71M6541F-DB.pdf
(165 pages)
Specifications of 71M6541F-DB
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Notes:
Table 6
corresponding data type and format sent back by the 71M6x01 isolated sensor and how the data is stored
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
With hardware and trim-related information on each connected 71M6x01 Isolated Sensor available to the
71M6541D/F, the MPU can implement temperature compensation of the energy measurement based on the
individual temperature characteristics of the 71M6x01 Isolated Sensor. See
Compensation
Table 7
71M6xxx Data Sheet for additional details.
v1.1
RCMD[4:2]
CHOPR[1:0]
RCMD[4:0]
PERR_WR
PERR_RD
001
010
010
010
1.
2.
3.
Name
TRIMT[7:0] is the VREF trim value for all 71M6x01 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 more information on TRIMT[7:0]
See the 71M6xxx Data Sheet for the equation to calculate temperature from the
the 71M6x01.
See the 71M6xxx Data Sheet for the equation to calculate temperature from the
the 71M6x01.
shows the allowable combinations of values in RCMD[4:2] and TMUXRn[2:0], and the
shows all I/O RAM registers used for control of the external 71M6x01 Isolated Sensors. See the
TMUXRn[2:0]
Notes:
on page
111
SFR FC[6]
SFR FC[5]
00X
00X
01X
10X
2709[7:6]
Address
1. Only two codes of RCMD[4:2] (SFR 0xFC[4:2]) are relevant for normal
2. For the RCMD[1:0] control field, codes 01, 10 and 11 are valid and 00
FC[4:0]
SFR
operation. These are RCMD[4:2] = 001 and 010. Codes 000 and 101
are invalid and will be ignored if used. The remaining codes are
reserved and must not be used.
is invalid and must not be used.
97
Table 7: I/O RAM Control Bits for Isolated Sensor
TRIMT[7:0]
(trim fuse for all 71M6x01)
STEMP[10:0]
(sensed 71M6x01 temperature)
VSENSE[7:0]
(sensed 71M6x01 supply voltage)
VERSION[7:0]
(chip version)
Reserved
© 2008–2011 Teridian Semiconductor Corporation
for details.
Default
Table 6: Remote Interface Read Commands
Read Operation
RST
00
0
0
Default
WAKE
00
0
0
Table
R/W Description
R/W
R/W
R/W
STEMP[10:8]=RMT_RD[10:8]
TRIMT[7]=RMT_RD[8]
(RMT_RD[15:
5.
When the MPU writes a non-zero value to RCMD,
the 71M654x issues a command to the cor-
responding isolated sensor selected with
RCMD[1:0]. When the command is complete, the
71M654x clears RCMD[4:2]. The command code
itself is in RCMD[4:2].
The 71M654x sets these bits to indicate that a
parity error on the isolated sensor has been de-
tected. Once set, the bits are remembered until
they are cleared by the MPU.
The CHOP settings for the isolated sensors.
00 – Auto chop. Change every multiplexer frame.
01 – Positive
10 – Negative
11 – Same as 00
RMT_RD [15:8]
VERSION[7:0]
All zeros
11] are sign extended)
4.7 Metrology Temperature
STEMP[7:0]
VSENSE[7:0]
TRIMT[6:0]=RMT_RD[7:1]
RMT_RD [7:0]
VSENSE[7:0]
STEMP[7:0]
All zeros
value read from
value read from
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