Datasheet

90E36A POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Register 42 April 2, 2013
6.2.3 SPECIAL CONFIGURATION REGISTERS
ZXConfig
Zero-Crossing Configuration
SagTh
Voltage Sag Threshold
PhaseLossTh
Voltage Phase Losing Threshold
Address: 07H
Type: Read/Write
Default Value: 0001H
Bit Name Description
15:13 ZX2Src[2:0] These bits select the signal source for the ZX2, ZX1 or ZX0 pins.
12:10 ZX1Src[2:0]
9:7 ZX0Src[2:0]
6:5 ZX2Con[1:0] These bits configure zero-crossing mode for the ZX2, ZX1 and ZX0 pins.
4:3 ZX1Con[1:0]
2:1 ZX0Con[1:0]
0ZXdis
This bit determines whether to disable the ZX signals:
0: enable
1: disable all the ZX signals to ‘0’ (default).
Address: 08H
Type: Read/Write
Default Value: 0000H
Bit Name Description
15:0 SagTh Unsigned 16-bit integer with unit related to PGA and voltage sense circuits. Refer to 3.8.2 Sag Detection.
Address: 09H
Type: Read/Write
Default Value: 0000H
Bit Name Description
15:0 PhaseLossTh Unsigned 16-bit integer with unit related to PGA and voltage sense circuits. Refer to 3.8.3 Phase Loss Detection.
Code Source
011 Fixed-0
000 Ua
001 Ub
010 Uc
111 Fixed-0
100 Ia
101 Ib
110 Ic
Code Zero-Crossing Configuration
00
positive zero-crossing
01
negative zero-crossing
10
all zero-crossing
11
no zero-crossing output