90E21 Datasheet, PDF (24/57 Pages) Integrated Device Technology – Single-Phase High-Performance Wide-Span Energy Metering IC

90E21/22/23/24
SINGLE-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
SmallPMod
Small-Power Mode
Address: 04H
Type: Read/Write
Default Value: 0000H
15
14
SmallPMod15 SmallPMod14
7
6
SmallPMod7 SmallPMod6
13
SmallPMod13
5
SmallPMod5
12
SmallPMod12
4
SmallPMod4
11
SmallPMod11
3
SmallPMod3
10
SmallPMod10
2
SmallPMod2
9
SmallPMod9
1
SmallPMod1
8
SmallPMod8
0
SmallPMod0
Bit
15 - 0
Name
Description
Small-power mode command.
A987H: small-power mode. The relationship between the register value of L line and N line active/reactive power in small-power
SmallPMod[15:0]
mode and normal mode is:
power in normal mode = power in small-power mode *10*Igain*Ugain /2^42
Others: Normal mode.
Small-power mode is mainly used in the power offset calibration.
LastSPIData
Last Read/Write SPI Value
Address: 06H
Type: Read
Default Value: 0000H
15
14
LastSPIData15 LastSPIData14
7
6
LastSPIData7
LastSPIData6
13
LastSPIData13
5
LastSPIData5
12
LastSPIData12
4
LastSPIData4
11
LastSPIData11
3
LastSPIData3
10
LastSPIData10
2
LastSPIData2
9
LastSPIData9
1
LastSPIData1
8
LastSPIData8
0
LastSPIData0
Bit
15 - 0
Name
LastSPI-
Data[15:0]
Description
This register stores the data that is just read or written through the SPI interface. Refer to Table-9 and Table-10.
Register
24
January 10, 2012