CS5464

DS682F3

31

8.2.12 Internal Status (Status) and Interrupt Mask (Mask)

Address: 15 (Status); 26 (Mask)

Default =

1 (Status), 0 (Mask)

The Status register indicates a variety of conditions within the chip. Writing a '1' to a Status register bit will clear

that bit if the condition that set it has been removed. Writing a '0' to any bit has no effect.

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

allow the corresponding Status register bit to activate the INT pin when set.

DRDY

Data Ready. During conversion, this bit indicates that low-rate results have been updated.

It indicates completion of other commands and the reset sequence.

I1OR (I2OR)

Current Out of Range. Set when the measured current would cause the I1 (I2) register to

overflow.

V1OR (V2OR)

Voltage Out of Range. Set when the measured voltage would cause the V1 (V2) register to

overflow.

CRDY

Conversion Ready. Indicates that sample rate (output word rate) results have been updat-

ed.

I1ROR (I2ROR)

to overflow.

V1ROR (V2ROR)

ister to overflow.

E1OR (E2OR)

I1FAULT (I2FAULT)Indicates when a current fault condition has occurred.

V1SAG (V2SAG)

Indicates when a voltage sag condition has occurred.

TUP

Indicates when the Temperature register (T) has been updated.

TOD

Modulator oscillation has been detected in the temperature A/D.

VOD

Modulator oscillation has been detected in the voltage A/D.

I1OD (I2OD)

Modulator oscillation has been detected in the current1 (current2) A/D.

LSD

Low Supply Detect. Set when the voltage on the PFMON pin falls below the specified low

level. LSD bit cannot be reset until the voltage rises above the specified high level.

FUP

Frequency Updated. Indicates the Epsilon register has been updated.

IC

Invalid Command. Normally logic 1. Set to 0 when an invalid command is received. It may

also indicate loss of serial command synchronization and the part may need to be re-initial-

ized.

23

22

21

20

19

18

17

16

DRDY

I2OR

V2OR

CRDY

I2ROR

V2ROR

I1OR

V1OR

15

14

13

12

11

10

9

8

E2OR

I1ROR

V1ROR

E1OR

I1FAULT

V1SAG

I2FAULT

V2SAG

7

654

32

10

TUP

TOD

I2OD

VOD

I1OD

LSD

FUP

IC