MIC2593

Micrel

M9999-042204

20

April 2004

Common Status Register (CS)

8-Bits, Read/Write

Common Status Register (CS)

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

read-write

read-write

read-only

read-only

read-write

read-write

read-write

read-only

Reserved

Reserved

GPI_B

GPI_A

INTMSK

UV_INT

OT_INT

Reserved

Bit(s)

Function

Operation

D[7]

Reserved

Always read as zero

D[6]

Reserved

Always read as zero

GPI_B

General Purpose Input 0, Slot B

State of GPIB pin

GPI_A

General Purpose Input 0, Slot A

State of GPIA pin

INTMSK

Interrupt Mask

0 = /INT generation is enabled.

1 = /INT generation is disabled. The

MIC2593 does not participate in the SMBus

Alert Response Address (ARA) protocol.

UV_INT

Undervoltage Interrupt

0 = No UVLO fault

1 = UVLO fault

Set whenever a circuit breaker fault condition

occurs as a result of an undervoltage lockout

condition on one of the main supply inputs.

This bit is only set if a UVLO condition occurs

while the ON[A/B] pin is asserted or the

MAIN[A/B] control bits are set.

OT_INT

Overtemperature Interrupt

0 = Die Temp < 160

°C.

1 = Fault: Die Temp > 160

°C.

Set if a fault occurs as a result of the

MIC2593’s die temperature exceeding

160

°C.

D[0]

Reserved

Undefined.

Power-Up Default Value: 00000000

Command_Byte Value (R/W): 00000110

To reset the OT_INT and UV_INT fault bits, a logical 1 must be written back to these bits.