Datasheet

Table 9. Power-On Configuration Option Lands
Configuration Option Land Name Notes
Output tri state PROCHOT_N 1
Execute BIST (Built-In Self Test) BIST_ENABLE 2
Enable Service Processor Boot Mode BMCINIT 3
Power-up Sequence Halt EAR_N 3
Enable Intel
®
Trusted Execution Technology (Intel
®
TXT)
Platform
TXT_PLTEN 3
Enable Bootable Firmware Agent FRMAGENT 3
Enable Intel Trusted Execution Technology (Intel TXT) Agent TXT_AGENT 3
Enable Safe Mode Boot SAFE_MODE_BOOT 3
Configure Socket ID SOCKET_ID[1:0] 3
Enables debug from cold boot DEBUG_EN_N 3
Note:
1. Output tri-state option enables Fault Resilient Booting (FRB), for FRB details see the Fault Resilient
Booting (FRB) Section. The signal used to latch PROCHOT_N for enabling FRB mode is RESET_N.
2. BIST_ENABLE is sampled at RESET_N de-assertion
3. This signal is sampled after PWRGOOD assertion.
Fault Resilient Booting (FRB)
The Intel
®
Xeon
®
processor v3 product families supports both socket and core level
Fault Resilient Booting (FRB), which provides the ability to boot the system as long as
there is one processor functional in the system. One limitation to socket level FRB is
that the system cannot boot if the legacy socket that connects to an active PCH
becomes unavailable since this is the path to the system BIOS. See the table below
for a list of output tri-state FRB signals.
Socket level FRB will tri-state processor outputs via the PROCHOT_N signal. Assertion
of the PROCHOT_N signal through RESET_N de-assertion will tri-state processor
outputs. Note, that individual core disabling is also supported for those cases where
disabling the entire package is not desired.
The Intel
®
Xeon
®
processor v3 product families extends the FRB capability to the core
granularity by maintaining a register in the Uncore so that BIOS or another entity can
disable one or more specific processor cores.
Table 10. Fault Resilient Booting (Output Tri-State) Signals
Output Tri-State Signal Groups Signals
Intel QPI QPI0_CLKTX_DN[1:0]
QPI0_CLKTX_DP[1:0]
QPI0_DTX_DN[19:00]
QPI0_DTX_DP[19:00]
QPI1_CLKTX_DN[1:0]
QPI1_CLKTX_DP[1:0]
QPI1_DTX_DN[19:00]
continued...
2.5
Electrical Specifications—Intel
®
Xeon
®
Processor E5-1600 and E5-2600 v3 Product Families
Intel
®
Xeon
®
Processor E5-1600 and E5-2600 v3 Product Families, Volume 1 of 2, Electrical
September 2014 Datasheet
Order No.: 330783-001 27