Micrel, Inc.
MIC2593
September 2008
20
M9999-092208
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
OV_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.
OV_INT
Overtemperature Interrupt
0 = Die Temp < 160癈
1 = Fault: Die Temp > 160癈
Set if a fault occurs as a result of theMIC2593s die
temperature exceeding160癈.
D[0]
Reserved
Undefined
Power-Up Default Value:
0000 0000
b
= 00
h
Command_Byte Value (R/W): 0000 0110
b
= 06
h
To reset the OT_INT and UV_INT fault bits, a logical 1 must be written back to these bits.
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