CS5467 datasheet(30/46 Pages) CIRRUS

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CS5467

DS714A1

ADVANCE RELEASE

6.1.7 Status (Status) and Mask (Mask) Register

Address: 15 (Status); 26 (Mask)

Default =

0x800001 (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 cal-

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

IOR (I2OR)

Current Out of Range. Set when the magnitude of the measured current value causes the I

(I2) register to overflow.

VOR (V2OR)

Voltage Out of Range. Set when the magnitude of the measured voltage value causes the

V (V2) register to overflow.

CRDY

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

rate.

IROR (I2ROR)

RMS Current Out of Range. Set when the calculated RMS current value causes the IRMS

(I2RMS) register to overflow.

VROR (V2ROR)

RMS Voltage Out of Range. Set when the calculated RMS voltage value causes the VRMS

(V2RMS) register to overflow.

EOR (E2OR)

Energy Out of Range. Set when PActive (P2Active) overflows.

IFAULT (I2FAULT) Indicates a current fault occurred in the power line current. If the absolute value of the in-

stantaneous current is less than ISAGlevel (I2SAGlevel) for more than half of the ISAGduration

(I2SAGduration), the IFAULT (I2FAULT) bit will be set.

VSAG (V2SAG)

Indicates a voltage sag occurred in the power line voltage. If the absolute value of the in-

stantaneous voltage is less than VSAGlevel (V2SAGlevel) for more than half of the VSAGduration

(V2SAGduration), the VSAG (V2SAG) bit will be set.

TUP

Temperature Updated. Indicates a temperature conversion is ready.

VOD (V2OD)

Modulator Oscillation Detected on the voltage (voltage 2) channel. Set when the modulator

oscillates due to an input above full scale. The level at which the modulator oscillates is sig-

nificantly higher than the voltage (voltage 2) channel’s differential input voltage range.

IOD (I2OD)

Modulator Oscillation Detected on the current (current 2) channel. Set when the modulator

oscillates due to an input above full scale. The level at which the modulator oscillates is sig-

nificantly higher than the current (current 2) channel’s differential input voltage range.

Note: The IOD (I2OD) and VOD (V2OD) bits may be ‘falsely’ triggered by very brief voltage

DRDY

I2OR

V2OR

CRDY

I2ROR

V2ROR

IOR

VOR

E2OR

IROR

VROR

EOR

IFAULT

VSAG

I2FAULT

V2SAG

654

TUP

V2OD

I2OD

VOD

IOD

LSD

FUP

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