90E21 datasheet(32/57 Pages) IDT

32 / 57 page

90E21/22/23/24

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

January 10, 2012

5.3.2

MEASUREMENT CALIBRATION REGISTER

AdjStart

Measurement Calibration Start Command

Ugain

Voltage rms Gain

Address: 30H

Type: Read/Write

Default Value: 6886H

Bit

Name

Description

15 - 0

AdjStart[15:0]

Measurement Calibration Start Command

6886H: Power-on value. No measurement.

5678H: Measurement calibration startup command. After 5678H is written to this register, registers 31H-3AH resume to their

power-on values. The 90E21/22/23/24 starts to measure regardless of the correctness of diagnosis. The AdjErr[1:0] bits

(SysStatus, 01H) are not set and the IRQ pin does not report any interrupt.

8765H: Check the correctness of the 31H-3AH registers. If correct, normal measurement. If not correct, measurement function is

disabled, the AdjErr[1:0] bits (SysStatus, 01H) are set and the IRQ pin reports interrupt.

Others: No measurement. The AdjErr[1:0] bits (SysStatus, 01H) are set and the IRQ pin reports interrupt.

Address: 31H

Type: Read/Write

Default Value: 6720H

Bit

Name

Description

15 - 0

Ugain[15:0]

Voltage rms Gain. For details, please refer to IDT application note AN-641.

Note:

the Ugain15 bit should only be '0'

AdjStart15

AdjStart14

AdjStart13

AdjStart12

AdjStart11

AdjStart10

AdjStart9

AdjStart8

765

432

AdjStart7

AdjStart6

AdjStart5

AdjStart4

AdjStart3

AdjStart2

AdjStart1

AdjStart0

Ugain15

Ugain14

Ugain13

Ugain12

Ugain11

Ugain10

Ugain9

Ugain8

765

432

Ugain7

Ugain6

Ugain5

Ugain4

Ugain3

Ugain2

Ugain1

Ugain0

90E21 bảng dữ liệu(PDF) 32 Page - Integrated Device Technology

90E21 bảng dữ liệu(HTML) 32 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

bảng dữ liệu tải về

Link URL