参数资料
型号: 71M6541F-DB
厂商: Maxim Integrated Products
文件页数: 23/166页
文件大小: 0K
描述: DEMO BOARD 71M6541F
标准包装: 1
系列: *
71M6541D/F/G and 71M6542F/G Data Sheet
Table 5. RCMD[4:0] Bits
Command
RCMD[4:2]
Phase Selector
RCMD[1:0]
Associated TMUXRn
Control Field
000
001
Invalid
Command 1
00
01
Invalid
IBP-IBN
---
TMUXRB [2:0]
010
011
100
101
110
111
Command 2
Reserved
Reserved
Invalid
Reserved
Reserved
Notes:
1. Only two codes of RCMD[4:2] ( SFR 0xFC[4:2] ) are relevant for normal
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.
2. For the RCMD[1:0] control field, codes 01, 10 and 11 are valid and 00
is invalid and must not be used.
Table 6 shows the allowable combinations of values in RCMD[4:2] and TMUXRn[2:0] , and the
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 Table 5 .
Table 6: Remote Interface Read Commands
RCMD[4:2]
001
010
010
010
TMUXRn[2:0]
00X
00X
01X
10X
Read Operation
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)
RMT_RD [15:8]
TRIMT[7]=RMT_RD[8]
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]
STEMP[7:0]
VSENSE[7:0]
All zeros
Notes:
1.
2.
3.
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 STEMP[7:0] value read from
the 71M6x01.
See the 71M6xxx Data Sheet for the equation to calculate temperature from the VSENSE[7:0] value read from
the 71M6x01.
With hardware and trim-related information on each connected 71M6x01 Isolated Sensor available to the
71M6541D/F/G, the MPU can implement temperature compensation of the energy measurement based on
the individual temperature characteristics of the 71M6x01 Isolated Sensor. See 4.7 Metrology
Temperature Compensation on page 97 for details.
Table 7 shows all I/O RAM registers used for control of the external 71M6x01 Isolated Sensors. See the
71M6xxx Data Sheet for additional details.
Table 7: I/O RAM Control Bits for Isolated Sensor
Name
Address
RST WAKE
Default Default
R/W Description
When the MPU writes a non-zero value to RCMD ,
RCMD[4:0]
SFR
FC[4:0]
0
0
the 71M654x issues a command to the cor-
R/W responding isolated sensor selected with
RCMD[1:0] . When the command is complete, the
71M654x clears RCMD[4:2]. The command code
Rev 4
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