Intel L5518 AT80602002265AB 用户手册
产品代码
AT80602002265AB
Intel
®
Xeon
®
Processor 5500 Series Datasheet, Volume 1
131
Features
7
Features
7.1
Power-On Configuration (POC)
Several options can be configured by hardware. Power-On configuration (POC)
functionality is provided by strapping VID signals (see
functionality is provided by strapping VID signals (see
) or sampled on the
active-to-inactive transition of RESET#. For specifics on these options, please refer to
Please note that requests to execute Built-In Self Test (BIST) are not selected by
hardware, but rather passed across the Intel QuickPath Interconnect link during
initialization.
hardware, but rather passed across the Intel QuickPath Interconnect link during
initialization.
Processors sample VID[2:0]/MSID[2:0] and VID[5:3]/CSC[2:0] around the asserting
edge VTTPWRGOOD.
edge VTTPWRGOOD.
Assertion of the PROCHOT# signal through RESET# de-assertion (also referred to as
Fault Resilient Boot (FRB)) will tri-state processor outputs.
Fault Resilient Boot (FRB)) will tri-state processor outputs.
outlines timing
requirements when utilizing PROCHOT# as a power-on configuration option. In the
event an FRB is desired, PROCHOT# and RESET# should be asserted simultaneously.
Furthermore, once asserted, PROCHOT# should remain low long enough to meet the
Power-On Configuration Hold Time (PROCHOT#). Failure to do so may result in false
tri-state.
event an FRB is desired, PROCHOT# and RESET# should be asserted simultaneously.
Furthermore, once asserted, PROCHOT# should remain low long enough to meet the
Power-On Configuration Hold Time (PROCHOT#). Failure to do so may result in false
tri-state.
Table 7-1.
Power On Configuration Signal Options
Configuration Option
Signal
Reference
Output tristate
PROCHOT#
1
Notes:
1. Asserting this signal during RESET# de-assertion will select the corresponding option. Once selected, this
option cannot be changed except via another reset. The processor does not distinguish between a "warm"
reset and a "power-on" reset. Output tri-state via the PROCHOT# power-on configuration option is referred
to as Fault Resilient Boot (FRB).
PECI ID
ODT/PECI_ID#
2, 3
2. Latched when VTTPWRGOOD is asserted and all internal power good conditions are met.
MSID
VID[2:0]/MSID[2:0]
2, 3
3. See the signal definitions in
for the description of PECI_ID#, MSID, and CSC.
CSC
VID[5:3]/CSC[2:0]
2, 3