90E21 datasheet(40/57 Pages) IDT

40 / 57 page

90E21/22/23/24

SINGLE-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC

January 10, 2012

EnStatus

Metering Status

Address: 46H

Type: Read

Default Value After Power On: C800H

Bit

Name

Description

Qnoload

This bit indicates whether the chip is in reactive no-load status.

0: not reactive no-load state

1: reactive no-load state

Pnoload

This bit indicates whether the 90E21/22/23/24 is in active no-load status.

0: not active no-load state

1: active no-load state

RevQ

This bit indicates the direction of the last CF2 (reactive output).

0: reactive forward

1: reactive reverse

Note:

This bit is always '0' when the CF2 output is configured to be absolute energy.

RevP

This bit indicates the direction of the last CF1 (active output).

0: active forward

1: active reverse

Note:

This bit is always '0' when the CF1 output is configured to be absolute energy.

Lline

This bit indicates the current metering line in anti-tampering mode.

0: N line

1: L line

10 - 2

Reserved.

1 - 0

LNMode[1:0]

These bits indicate the configuration of MMD1 and MMD0 pins. Their relationship is as follows:

Qnoload

Pnoload

RevQ

RevP

Lline

765

432

LNMode1

LNMode0

MMD1

MMD0

LNmod1

LNmod0

L/N Metering Mode

anti-tampering mode (larger power)

L line mode (fixed L line)

L+N mode (applicable for single-phase three-wire system)

Flexible mode (Line specified by the LNSel bit (MMode, 2BH))

90E21 Datasheet(PDF) 40 Page - Integrated Device Technology

90E21 Datasheet(HTML) 40 Page - Integrated Device Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

Datasheet Download

Link URL