90E32 Datasheet, PDF (44/71 Pages) Integrated Device Technology – Poly-Phase High-Performance Wide-Span Energy Metering IC

90E32
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
6.3 LOW-POWER MODES REGISTERS
6.3.1 DETECTION MODE REGISTERS
Current Detection register latching scheme is:
When any of the 4 current detection registers (0x10 - 0x13) were programmed, all the 4 current detection registers (including the registers that not
being programmed) will be automatically latched into the current detector's internal configuration latches at the same time. Those latched configura-
tion values are not subject to digital reset signals and will be kept in all the 4 power modes. The power up value of those latches is not deterministic,
so user needs to program the current detection registers to update.
Current detector
register Write
registers
0x10
update
Current Detector block
latch
0x11
latch
0x12
latch
0x13
latch
Figure-15 Current Detection Register Latching Scheme
DetectCtrl
Current Detect Control
Address: 10H
Type: Read/Write
Default Value: 0000H
Bit
Name
15:6
-
5:0
DetectCtrl
Description
Reserved.
Detector power-down, active high:
[5:3]: Power-down for negative detector of channel 3/2/1;
[2:0]: Power-down for positive detector of channel 3/2/1.
Register
44
December 9, 2011