90E32 Datasheet, PDF (19/71 Pages) Integrated Device Technology – Poly-Phase High-Performance Wide-Span Energy Metering IC

90E32
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
3.6 POWER MODE
The 90E32 has four power modes. The power mode is solely defined
by the PM1 and PM0 pins.
3.6.1 NORMAL MODE (N MODE)
In Normal mode, all function blocks are active except for current
detector block. Refer to Figure-6.
Table-2 Power Mode Mapping
PM1:PM0 Value
11
10
01
00
Power Mode
Normal (N mode)
Partial Measurement (M mode)
Detection (D mode)
Idle (I mode)
OSCI
OSCO
Power On Reset
Power Mode
Configuration
Current Detector
ADC-I1
ADC-I2
ADC-I3
ADC-V1
ADC-V2
ADC-V3
Temperature Sensor
Reference Voltage
Disabled
VDD18 Regulator
Crystal Oscillator
Energy Metering
(Forward/Reverse
Active/Reactive/CF Generator)
CF Out
DSP
Zero
Measure and Monitoring
(V/I/rms, SAG, Phase, Freq)
Crossing
Warn
Out
IRQ
Control Logic
SPI Interface
Figure-6 Block Diagram in Normal Mode
Function Description
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December 9, 2011