MIC2341R-2YTQ Micrel Inc, MIC2341R-2YTQ Datasheet - Page 27

• Manufacturer Part Number: MIC2341R-2YTQ
• Description: Dual -Slot PCI Express Hot-Plug Controller
• Manufacturer: Micrel Inc
• Type: Hot-Swap Controllerr

Specifications of MIC2341R-2YTQ

• Applications: General Purpose, PCI Express
• Internal Switch(s): No
• Current Limit: Adjustable
• Voltage - Supply: 3.3V, 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: 576-2987

Slot[A/B] Fault Reporting
The MIC2341’s /FAULT_MAIN[A/B] open-drain digital
output are activated after power-on-reset and become
asserted when:
The ON[A/B] input signals are asserted, AND
In order to clear the /FAULT_MAIN[A/B] outputs once
asserted
breaker(s), a high-to-low transition is required on the
ON[A/B] input signals. Please see /FAULT_MAIN[A/B]
pin descriptions for additional information.
Micrel, Inc.
October 2007
Figure 10. State Diagram for /FAULT_MAIN[A/B] Signals
• The 12VIN[A/B] or the
• The fast OC circuit breaker[A/B] has tripped,
• The slow OC circuit breaker[A/B] has tripped
voltages is less than its respective ULVO
threshold, OR
OR
AND its corresponding C
the digital filter delay has expired.
and
to
reset
the
FILTER[A/B]
corresponding
3VIN[A/B] input
timeout or
circuit
27
The MIC2341’s /FAULT_AUX[A/B] open-drain digital
outputs are activated after power-on-reset and become
asserted when:
The AUXEN[A/B] input signals are asserted, AND
In order to clear the /FAULT_AUX[A/B] outputs once
asserted and to reset the VAUX[A/B] circuit breaker(s), a
high-to-low transition is required on the AUXEN[A/B]
input
descriptions for additional information.
If the /FORCE_ON[A/B] digital inputs are used for
diagnostic
/FAULT_AUX[A/B],
/DLY_PWRGD[A/B] digital outputs are de-asserted once
/FORCE_ON[A/B] inputs are asserted.
Figure 11. State Diagram for /FAULT_AUX[A/B] Signals
• The slow VAUX[A/B] OC circuit breaker has
• The slow VAUX[A/B] OC circuit breaker has
• The MIC2341’s global die temperature is
tripped AND its corresponding C
timeout or the digital filter delay has expired,
OR
tripped AND the Slot[A/B] die temperature is
higher than 140°C, OR
higher than 160°C
signals.
purposes,
Please
see
the
/PWRGD[A/B],
/FAULT_AUX[A/B]
/FAULT_MAIN[A/B],
MIC2341/2341R
M9999-102507-A
[phone]
FILTER[A/B]
and
pin