參數(shù)資料
型號： 71M6543F-IGT/F
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 模擬信號調理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP100
封裝： LEAD FREE, LQFP-100
文件頁數(shù)： 74/157頁
文件大小： 2178K
代理商： 71M6543F-IGT/F
8
71M6543F/H Data Sheet
v1.2
2008–2011 Teridian Semiconductor Corporation
23
Table 4. RCMD[4:0] Bits
Command
RCMD[4:2]
Phase Selector
RCMD[1:0]
Associated TMUXRn
Control Field
000
Invalid
00
Invalid
---
001
Command 1
01
IADC
2-IADC3
TMUXR
2[2:0]
010
Command 2
10
IADC
4-IADC5
TMUXR
4[2:0]
011
Reserved
11
IADC
6-IADC7
TMUXR
6[2:0]
100
Reserved
101
Invalid
110
Reserved
111
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.
3.
The specific phase (A, B or C) associated with each TMUXRn[2:0]
field, is determined by how the IADCn input pins are connected in the
meter design.
Table 5 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 71M6xx3 remote 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 4.
.
Table 5: Remote Interface Read Commands
RCMD[4:2]
TMUXRn[2:0]
Read Operation
RMT_RD [15:8]
RMT_RD [7:0]
001
00X
TRIMT[7:0]
(trim fuse for all 71M6xx3)
TRIMT[7]=RMT_RD[8]
TRIMT[6:0]=RMT_RD[7:1]
001
11X
TRIMBGB[7:0] and
TRIMBGD[7:0]
(additional trim fuses for
71M6113 and 71M6203 only)
TRIMBGB[7:0]
TRIMBGD[7:0]
010
00X
STEMP[10:0]
(sensed 71M6xx3 temperature)
STEMP[10:8]=RMT_RD[10:8]
(RMT_RD[15:11] are sign extended)
STEMP[7:0]
010
01X
VSENSE[7:0]
(sensed 71M6xx3 supply voltage)
All zeros
VSENSE[7:0]
010
10X
VERSION[7:0]
(chip version)
VERSION[7:0]
All zeros
Notes:
1.
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.
2.
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.
3.
4.
With hardware and trim-related information on each connected 71M6xx3 Isolated Sensor available to the
71M6543, 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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