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| 型号： | 71M6545-IGT/F |
| 厂商： | Maxim Integrated |
| 文件页数： | 26/133页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METERING |
| 标准包装： | 160 |
| 系列： | * |
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71M6545/71M6545H Data Sheet
2.3.4
Meter Equations
The 71M6545/H provides hardware assistance to the CE in order to support various meter equations.
This assistance is controlled through I/O RAM field EQU[2:0] (equation assist, I/O RAM 0x2106[7:5] ). The
Compute Engine (CE) firmware for industrial configurations can implement the equations listed in Table 7 .
EQU[2:0] specifies the equation to be used based on the meter configuration and on the number of phases
used for metering.
Table 7: Inputs Selected in Multiplexer Cycles
EQU[2:0]*
Description
Wh and VARh formula
Element 0 Element 1 Element 2
Recommended
Multiplexer Sequence
2
3
4
5
2-element, 3-W, 3 φ Delta
2-element, 4-W, 3 φ Delta
2-element, 4-W, 3 φ Wye
3-element, 4-W, 3 φ Wye
VA · IA
VA(IA-IB)/2
VA(IA-IB)/2
VA · IA
VB · IB
VC ·IC
VB(IC-IB)/2
VB · IB
N/A
N/A
N/A
VC · IC
IA VA IB VB
IA VA IB VB IC VC
IA VA IB VB IC VC
IA VA IB VB IC VC (ID)
Note:
* Only EQU[2:0] = 5 is supported by the currently available CE code versions for the 71M6545/H.
Contact your local Maxim representative for CE codes that support equations 2, 3 and 4.
2.3.5
Real-Time Monitor (RTM)
The CE contains a Real-Time Monitor (RTM), which can be programmed to monitor four selectable XRAM
locations at full sample rate. The data from the four monitored locations are serially output to the TMUXOUT
pin via the digital output multiplexer at the beginning of each CE code pass. The RTM can be enabled and
disabled with RTM_E (I/O RAM 0x2106[1]) . The RTM output clock is available on the TMUX2OUT pin.
Each RTM word is clocked out in 35 cycles and contains a leading flag bit. See Figure 8 for the RTM output
format. RTM is low when not in use.
CK32
MUX_SYNC
MUX_STATE
CKTEST
S
RTM
0
1
30
31
0
1
30
31
0
1
30
31
0
1
30
31
FLAG
FLAG
FLAG
FLAG
RTM DATA0 (32 bits)
RTM DATA1 (32 bits)
RTM DATA2 (32 bits)
RTM DATA3 (32 bits)
Figure 8: RTM Timing
2.3.6
Pulse Generators
The 71M6545/H provides four pulse generators, VPULSE, WPULSE, XPULSE and YPULSE, as well as
hardware support for the VPULSE and WPULSE pulse generators. The XPULSE and YPULSE generators
are used by standard CE code to output CE status indicators, for example the status of the sag detection,
to DIO pins. All pulses can be configured to generate interrupts to the MPU.
The polarity of the pulses may be inverted with PLS_INV (I/O RAM 0x210C[0]) . When this bit is set, the
pulses are active high, rather than the more usual active low. PLS_INV inverts all the pulse outputs.
The function of each pulse generator is determined by the CE code and the MPU code must configure the
corresponding pulse outputs in agreement with the CE code. For example, standard CE code produces a
mains zero-crossing pulse on XPULSE and a SAG pulse on YPULSE.
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相关代理商/技术参数 |
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|---|---|
| 71M6545-IGTR/F | 功能描述:计量片上系统 - SoC Metrology Proc. (3P 64K Flsh .1%) RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel |
| 71M6545T-IGT/F | 制造商:Maxim Integrated Products 功能描述:METROLOGY PROCESSORS - Rail/Tube |
| 71M6545T-IGTR/F | 制造商:Maxim Integrated Products 功能描述:3-PHASE AFE, 32KB FLASH, PRES TEMP SENSOR - Tape and Reel |
| 71M6601 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring |
| 71M6601-IF | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring |
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