MIC2590B-2YTQ TR Micrel Inc, MIC2590B-2YTQ TR Datasheet - Page 17

• Manufacturer Part Number: MIC2590B-2YTQ TR
• Description: IC PCI HOT PLUG CTLR DUAL 48TQFP
• Manufacturer: Micrel Inc
• Type: Hot-Swap Controllerr

Specifications of MIC2590B-2YTQ TR

• Applications: PCI, PCI-X
• Internal Switch(s): No
• Voltage - Supply: 3.3V, 5V, ±12V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MIC2590B-2YTQTR; MIC2590B-2YTQTR

Power-Up Default Value:
Command Byte (R/W):
To reset the OT_INT and UV_INT fault bits a logical
1must be written back to these bits.
Reserved
read-only
D[7]
Micrel, Inc.
September 2008
INTMSK
UV_INT
OT_INT
Bit(s)
GPIB
GPIA
Common Status Register, (STAT), 8-Bits Read/Write
D[7]
D[6]
D[0]
Reserved
read-only
D[6]
Reserved
Reserved
General Purpose
Input, Slot B
General Purpose
Input, Slot A
Interrupt Mask
Undervoltage Interrupt
Overtemperature
Interrupt
Reserved
read-only
D[5]
GPIB
Function
read-only
D[4]
GPIA
0000 0000
0000 0110
INTMSK
D[3]
read-
write
Read Undefined
Always read as zero
Always read as zero
State of GPIB pin
State of GPIA pin
0 = /INT generation is
enabled
1 = /INT generation is
disabled.
The MIC2590B does
not participate in the
SMBus Alert
Response Address
(ARA) Protocol.
Set whenever a
circuit Interrupt
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 one or both of
the ON[A/B] pins are
asserted or the
MAIN[A/B] enable
control bits are set.
Set whenever a
circuit breaker fault
occurs as a result of
an overtemperature
condition exceeding
160°C shutting both
channels off.
UV_INT
D[2]
read-
write
b
b
Operation
= 00
= 06
OT_INT
D[1]
read-
write
h
h
Reserved
read-only
D[0]
17
M9999-091808
MIC2590B