CS5463-ISZ datasheet(29/44 Pages) CIRRUS

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CS5463

DS678PP1

6.1.10 Power Offset Register ( Poff )

Address: 14

Default = 0x000000

Power Offset (Poff) is added to the instantaneous power being accumulated in the Pactive register, and can be

used to offset contributions to the energy result that are caused by undesirable sources of energy that are in-

herent in the system. The value is represented in two's complement notation and in the range of -1.0

≤ Poff < 1.0,

with the binary point to the right of the MSB.

6.1.11 Status Register and Mask Register ( Status , Mask )

Address: 15 (Status Register); 26 (Mask Register)

Default =

0x000001 (Status Register), 0x000000 (Mask Register)

The Status Register indicates status within the chip. In normal operation, writing a '1' to a bit will cause the bit

to reset. Writing a '0' to a bit will not change it’s current state.

The Mask Register is used to control the activation of the INT pin. Placing a logic '1' in a Mask bit will allow the

corresponding bit in the Status Register to activate the INT pin when the status bit is asserted.

DRDY

Data Ready. During conversions, this bit will indicate the end of computation cycles. For cali-

brations, this bit indicates the end of a calibration sequence.

CRDY

Conversion Ready. Indicates a new conversion is ready. This will occur at the output word rate.

IOR

Current Out of Range. Set when the Instantaneous Current Register overflows.

VOR

Voltage Out of Range. Set when the Instantaneous Voltage Register overflows.

IROR

IRMS Out of Range. Set when the IRMS Register overflows.

VROR

VRMS Out of Range. Set when the VRMS Register overflows.

EOR

Energy Out of Range. Set when PACTIVE overflows.

FUP

Epsilon Updated. Indicates completion of a line frequency measurement and update of Epsilon.

IFAULT

Indicates a current fault has occurred. See Section 5.6 Sag and Fault Detect Feature on page

19.

VSAG

Indicates a voltage sag has occurred. See Section 5.6 Sag and Fault Detect Feature on page

19.

TUP

Temperature Updated. Indicates the Temperature Register has updated.

TOD

Modulator oscillation detected on the temperature channel. Set when the modulator oscillates

due to an input above full scale.

MSB

LSB

-(20)2-1

2-2

2-3

2-4

2-5

2-6

2-7

.....

2-17

2-18

2-19

2-20

2-21

2-22

2-23

DRDY

CRDY

IOR

VOR

IROR

VROR

EOR

IFAULT

VSAG

654

TUP

TOD

VOD

IOD

LSD

FUP

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