Intel E5-1428L CM8062001144000 Data Sheet

BPM_N[7:0]

Breakpoint and Performance Monitor Signals: I/O signals from the

processor that indicate the status of breakpoints and programmable

counters used for monitoring processor performance. These are 100 MHz

signals.

PRDY_N

Probe Mode Ready is a processor output used by debug tools to determine

processor debug readiness.

PREQ_N

Probe Mode Request is used by debug tools to request debug operation of

the processor.

TCK

TCK (Test Clock) provides the clock input for the processor Test Bus (also

known as the Test Access Port).

TDI

TDI (Test Data In) transfers serial test data into the processor. TDI

provides the serial input needed for JTAG specification support.

TDO

TDO (Test Data Out) transfers serial test data out of the processor. TDO

provides the serial output needed for JTAG specification support.

TMS

TMS (Test Mode Select) is a JTAG specification support signal used by

debug tools.

TRST_N

TRST_N (Test Reset) resets the Test Access Port (TAP) logic. TRST_N must

be driven low during power on Reset.

SVIDALERT_N

Serial VID alert.

SVIDCLK

Serial VID clock.

SVIDDATA

Serial VID data out.

CATERR_N

Indicates that the system has experienced a fatal or catastrophic error and

cannot continue to operate. The processor will assert CATERR_N for

unrecoverable machine check errors and other internal unrecoverable

errors. It is expected that every processor in the system will wire-OR

CATERR_N for all processors. Since this is an I/O land, external agents are

allowed to assert this land which will cause the processor to take a machine

check exception. This signal is sampled after PWRGOOD assertion. On the

Intel

®

 Xeon

®

 processor v3 product families, CATERR_N is used for

signaling the following types of errors:
• Legacy MCERR's, CATERR_N is asserted for 16 BCLKs.
• Legacy IERR's, CATERR_N remains asserted until warm or cold reset.

ERROR_N[2:0]

Error status signals for integrated I/O (IIO) unit:

Intel

®

 Xeon

®

 Processor E5-1600 and E5-2600 v3 Product Families, Volume 1 of 2, Electrical

September 2014

Datasheet

Order No.: 330783-001

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