MIC2591B-2BTQ TR Micrel Inc, MIC2591B-2BTQ TR Datasheet - Page 6
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MIC2591B-2BTQ TR
Manufacturer Part Number
MIC2591B-2BTQ TR
Description
IC PCI HOT PLUG CTLR DUAL 48TQFP
Manufacturer
Micrel Inc
Type
Hot-Swap Controllerr
Datasheet
1.MIC2591B-2YTQ.pdf
(34 pages)
Specifications of MIC2591B-2BTQ TR
Applications
General Purpose, PCI Express
Internal Switch(s)
No
Voltage - Supply
3.3V, 12V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
48-TQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
MIC2591B-2BTQTR
MIC2591B-2BTQTR
MIC2591B-2BTQTR
Pin Description (continued)
March 2005
Pin Number
Pin Number
Pin Number
Pin Number
38
38
38
38
39
39
39
40
40
40
40
41
41
41
41
48
48
48
48
47
47
47
47
37
37
37
37
17
17
17
17
46
46
46
46
20
20
20
18
19
19
30
4
4
4
4
7
7
7
7
RFILTER[A&B]
RFILTER[A&B]
RFILTER[A&B]
Pin Name
Pin Name
Pin Name
Pin Name
GPI_A0
GPI_A0
GPI_A0
GPI_A0
GPI_B0
GPI_B0
GPI_B0
GPI_B0
GND
GND
GND
GND
SDA
SDA
SDA
SDA
SCL
SCL
SCL
SCL
/INT
/INT
/INT
/INT
NC
NC
NC
NC
A2
A2
A2
A1
A1
A1
A1
A0
A0
A0
A0
Pin Function
Pin Function
Pin Function
Pin Function
General Purpose Inputs: The states of these two inputs are available by
General Purpose Inputs: The states of these two inputs are available by
General Purpose Inputs: The states of these two inputs are available by
General Purpose Inputs: The states of these two inputs are available by
reading the Common Status Register, Bits [4:5]. If not used, connect each
reading the Common Status Register, Bits [4:5]. If not used, connect each
reading the Common Status Register, Bits [4:5]. If not used, connect each
reading the Common Status Register, Bits [4:5]. If not used, connect each
pin to GND.
SMBus Address Select Pins: Connect to ground or leave open in order to
SMBus Address Select Pins: Connect to ground or leave open in order to
SMBus Address Select Pins: Connect to ground or leave open in order to
program device SMBus base address. These inputs have internal pull-up
program device SMBus base address. These inputs have internal pull-up
program device SMBus base address. These inputs have internal pull-up
program device SMBus base address. These inputs have internal pull-up
resistors to VSTBY[A/B].
resistors to VSTBY[A/B].
resistors to VSTBY[A/B].
resistors to VSTBY[A/B].
SMBus Data: Bidirectional SMBus data line.
SMBus Data: Bidirectional SMBus data line.
SMBus Data: Bidirectional SMBus data line.
SMBus Data: Bidirectional SMBus data line.
SMBus Clock: Input.
SMBus Clock: Input.
SMBus Clock: Input.
SMBus Clock: Input.
Interrupt Output: Open-drain, active-low. Asserted whenever a power fault
Interrupt Output: Open-drain, active-low. Asserted whenever a power fault
Interrupt Output: Open-drain, active-low. Asserted whenever a power fault
Interrupt Output: Open-drain, active-low. Asserted whenever a power fault
is detected if the INTMSK bit (CS Register Bit D[3]) is a logical "0". This
output is cleared by performing an "echo reset" to the appropriate fault bit(s)
in the STAT[A/B] and/or CS registers. This pin requires an external pull-up
resistor to V
2 Pins, IC Ground Connections: Tie directly to the system’s analog GND
2 Pins, IC Ground Connections: Tie directly to the system’s analog GND
2 Pins, IC Ground Connections: Tie directly to the system’s analog GND
2 Pins, IC Ground Connections: Tie directly to the system’s analog GND
plane directly at the device.
plane directly at the device.
plane directly at the device.
plane directly at the device.
Connecting this pin to GND through a 110kΩ, 1% resistor will provide a
Connecting this pin to GND through a 110kΩ, 1% resistor will provide a
Connecting this pin to GND through a 110kΩ, 1% resistor will provide a
signifi cant improvement in timeout duration accuracy for slow overcurrent
signifi cant improvement in timeout duration accuracy for slow overcurrent
signifi cant improvement in timeout duration accuracy for slow overcurrent
signifi cant improvement in timeout duration accuracy for slow overcurrent
faults on Slot A and Slot B. If left fl oating (NC), overcurrent timeout duration
faults on Slot A and Slot B. If left fl oating (NC), overcurrent timeout duration
faults on Slot A and Slot B. If left fl oating (NC), overcurrent timeout duration
faults on Slot A and Slot B. If left fl oating (NC), overcurrent timeout duration
accuracy is determined by the specifi cation for V
accuracy is determined by the specifi cation for V
accuracy is determined by the specifi cation for V
accuracy is determined by the specifi cation for V
see the “Circuit Breaker Function” text in the “Functional Description” section
see the “Circuit Breaker Function” text in the “Functional Description” section
see the “Circuit Breaker Function” text in the “Functional Description” section
see the “Circuit Breaker Function” text in the “Functional Description” section
for more detail.
for more detail.
for more detail.
for more detail.
Reserved: Make no external connections to these pins.
Reserved: Make no external connections to these pins.
Reserved: Make no external connections to these pins.
Reserved: Make no external connections to these pins.
6
STBY
STBY
STBY
.
.
FILTER
and I
FILTER
M9999-033105
. Please