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参数资料
| 型号： | CDB5464U |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 22/46页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR CS5464 ADC |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电度表/功率表 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | CS5464 |
| 主要属性： | 电能表 |
| 次要属性： | 图形用户接口，SPI? 和 USB 接口 |
| 已供物品： | 板，线缆，软件 |
| 产品目录页面： | 754 (CN2011-ZH PDF) |
| 相关产品： | CS5464-ISZR-ND - IC ENERGY METERING 1PHASE 28SSOP 598-1194-5-ND - IC ENERGY METERING 1PHASE 28SSOP 598-1193-5-ND - IC PWR/ENERGY METER 3CH 28-SSOP |
| 其它名称： | 598-1554 CDB-5464U |
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CS5464
7. USING THE CS5464
7.1 Initialization
The CS5464 uses a power-on-reset circuit (POR) to
provide an internal reset until the analog voltage reach-
es 4.0 V. The RESET input pin can also be used by the
application circuit to reset the part.
After RESET is removed and the oscillator is stable, an
initialization program is executed to set the default reg-
ister values.
A Software Reset command is also provided to allow
the application to run the initialization program without
removing power or asserting RESET.
The application should avoid sending commands during
initialization. The DRDY bit in the Status register indi-
cates when the initialization program has completed.
7.2 Power-down States
The CS5464 has two power-down states, stand-by and
sleep. In the stand-by state, all circuitry except the volt-
age reference and crystal oscillator is powered off. In
sleep state, all circuitry except the instruction decoder is
powered off.
To return the device to the active state, send a Wake-
Up/Halt command to the device. When returning from
stand-by mode, registers will retain their contents prior
to entering the stand-by state. When returning from
sleep mode, a complete initialization occurs.
7.3 Tamper Detection and Correction
The CS5464 provides compensation for at least two
forms of meter tampering. A second current input is pro-
vided in the event that the primary input is impaired by
tampering. (See Figure 14 on page 42). An internal
RMS voltage reference is also available in the event that
the voltage input has been compromised by tampering.
Power and energy are calculated for BOTH current in-
puts (both energy channels). The CS5464 can automat-
ically choose the channel with the greater magnitude.
The register E MIN , (also called Irms MIN ) sets a minimum
level for automatic channel selection, and Ichan LEVEL
sets a minimum difference that will allow a channel
22
change. Modes register bit Ichan selects the energy
channel, and is normally driven by the CS5464 pro-
gram. This affects the pulse registers and pulse energy
outputs. (See figure 8 ).
The application program can also choose the more ap-
propriate energy channel. Modes register bit Ihold dis-
ables automatic selection and Ichan can be driven by
the application. Shown below is the channel selector.
AVG
AVG
Figure 8. Energy Channel Selection
If the application detects that the voltage input has been
impaired it may choose to use the fixed internal RMS
voltage reference by setting the VFIX bit in the Modes
register. The value of this reference ( VF RMS ) is by de-
fault 0.707107 (full-scale RMS) but can be changed by
the application program. (See figure 9 )
Figure 9. Fixed RMS Voltage Selection
DS682F3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CDB5464U-Z | 制造商:Cirrus Logic 功能描述:EVAL BD PB-FREE DEMO BOARD FOR CS5464 - Boxed Product (Development Kits) 制造商:Cirrus Logic 功能描述:Eval Board |
| CDB5466U | 功能描述:数据转换 IC 开发工具 Eval Bd F/Residental Pow-Meter Apps RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| CDB5466U-Z | 制造商:Cirrus Logic 功能描述:PB-FREEEVAL BOARD FOR CS5466 WITH USB - Bulk |
| CDB5467U | 功能描述:数据转换 IC 开发工具 Eval Bd 4-Ch Sngl-Phs Pow/Energy RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| CDB5471 | 制造商:Cirrus Logic 功能描述:Tools Development kit Kit Con |
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