Справочник Пользователя для Intel E5-4620 v2 CM8063501393202

Модели

CM8063501393202

Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families

147

Datasheet Volume One

Signal Descriptions

6.5

PECI Signal

6.6

System Reference Clock Signals

6.7

JTAG and TAP Signals

Note:

Refer to the appropriate Platform Design Guide (PDG) for Debug Port implementation details.

Table 6-10. PECI Signals

Signal Name

Description

PECI

PECI (Platform Environment Control Interface) is the serial sideband interface to the

processor and is used primarily for thermal, power and error management. Details

regarding the PECI electrical specifications, protocols and functions can be found in the

Platform Environment Control Interface Specification.

Table 6-11. System Reference Clock (BCLK{0/1}) Signals

Signal Name

Description

BCLK{0/1}_D[N/P]

Reference Clock Differential input. These pins provide the PLL reference clock

differential input into the processor. Both 100MHz BCLK0 and BCLK1 from the same

clock source provide the required reference clock inputs to the various PLLs inside

the CPU.

Table 6-12. JTAG and TAP Signals

Signal Name

Description

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.

EAR_N

External Alignment of Reset, used to bring the processor up into a deterministic state.

This signal is pulled up on the die, refer to

Table 7-6

for details.

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.