Datasheet

90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Function Description 23 April 2, 2013
3.8 POWER MODE
The 90E32AS has four power modes. The power mode is solely
defined by the PM1 and PM0 pins.
3.8.1 NORMAL MODE (N MODE)
In Normal mode, the default is that all function blocks are active
except for current detector block. Refer to Figure-10.
The current detector can be enabled and calibrated in normal mode
using control bits in DetectCtrl register.
Figure-10 Block Diagram in Normal Mode
Table-2 Power Mode Mapping
PM1:PM0 Value Power Mode
11 Normal (N mode)
10 Partial Measurement (M mode)
01 Detection (D mode)
00 Idle (I mode)
VDD18 Regulator
Temperature Sensor
Current Detector
ADC-V1
ADC-V2
ADC-V3
ADC-I1
ADC-I2
ADC-I3
SPI Interface
DSP
Energy Metering
(Forward/Reverse
Active/Reactive/CF Generator)
Measure and Monitoring
(V/I/rms / SAG / Phase /
Frequency)
Control Logic
Zero
Crossing
CF Out
Power On Reset
Crystal Oscillator
On-chip
Reference Voltage
Vref
I1P / I1N
V1P / V1N
CS
SCLK
SDO
SDI
OSCI OSCO
RESET
CF1
ZX0
I2P / I2N
I3P / I3N
V2P / V2N
V3P / V3N
CF2
CF3
CF4
ZX1
ZX2
Power Mode
Configuration
PM1
PM0
IRQ
WarnOut
IRQ0
IRQ1
Warn
Out
Flexible Piece-wise Non-linear
Compensation
Disabled