User Manual

Functional Description (Continued)

13.4 Interrupt Status Register 1—Address 41h

Power on default –

7:0

= 0000 0000 binary

Bit Name Read/Write Description

0 +2.5Vin Read Only A one indicates a High or Low limit has been exceeded.

1 Vccp1 Read Only A one indicates a High or Low limit has been exceeded.

2 +3.3Vin Read Only A one indicates a High or Low limit has been exceeded.

3 +5Vin Read Only A one indicates a High or Low limit has been exceeded.

4 Temperature Read Only A one indicates a HIGH or HIHYST temperature error, see

SECTION 8.2

5 Reserved Read Only

6 FAN1 Read Only A one indicates the fan count limit has been exceeded.

7 FAN2 Read Only A one indicates the fan count limit has been exceeded.

13.5 Interrupt Status Register 2—Address 42h

Power on default –

7:0

= 0000 0000 binary

Bit Name Read/Write Description

0 +12Vin Read Only A one indicates a High or Low limit has been exceeded.

1 Vccp2 Read Only A one indicates a High or Low limit has been exceeded.

2 Reserved Read Only

3 Reserved Read Only

4 CI Read Only A one indicates CI (Chassis Intrusion) has gone high.

5 Reserved Read Only

6 Reserved Read Only

7 TLOW Read Only A one indicates LOW temperature error in EXTENDED MODE ONLY, see

SECTION 8.2

13.6 Interrupt Mask Register 1—Address 43h

Power on default –

7:0

= 0000 0000 binary

Bit Name Read/

Write

Description

0 +2.5Vin Read/Write A one disables the corresponding interrupt status bit for INT interrupt.

1 Vccp1 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.

2 +3.3Vin Read/Write A one disables the corresponding interrupt status bit for INT interrupt.

3 +5Vin Read/Write A one disables the corresponding interrupt status bit for INT interrupt.

4 Temperature Read/Write A one disables the corresponding interrupt status bit for INT interrupt.

5 Reserved Read/Write

6 FAN1 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.

7 FAN2 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.

LM81