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Electrical Specifications

Dual-Core Intel® Xeon® Processor 5000 Series Datasheet

With the implementation of a source synchronous data bus comes the need to specify

two sets of timing parameters. One set is for common clock signals whose timings are

specified with respect to rising edge of BCLK0 (ADS#, HIT#, HITM#, and so forth) and

the second set is for the source synchronous signals which are relative to their

respective strobe lines (data and address) as well as rising edge of BCLK0.

Asynchronous signals are still present (A20M#, IGNNE#, and so forth) and can become

active at any time during the clock cycle. Table 2-6 identifies which signals are common

clock, source synchronous and asynchronous.

Notes:

Refer to Section 5 for signal descriptions.

These signals may be driven simultaneously by multiple agents (Wired-OR).

Table 2-6.

FSB Signal Groups

Signal Group

Type

Signals1

AGTL+ Common Clock Input

Synchronous to BCLK[1:0]

BPRI#, DEFER#, RESET#, RS[2:0]#, RSP#,

TRDY#

AGTL+ Common Clock I/O

Synchronous to BCLK[1:0]

ADS#, AP[1:0]#, BINIT#2, BNR#2,

BPM[5:0]#, BR[1:0]#, DBSY#, DP[3:0]#,

DRDY#, HIT#2, HITM#2, LOCK#, MCERR#2

AGTL+ Source Synchronous I/O

Synchronous to assoc.

strobe

AGTL+ Strobes I/O

Synchronous to BCLK[1:0]

ADSTB[1:0]#, DSTBP[3:0]#, DSTBN[3:0]#

AGTL+ Asynchronous Output

Asynchronous

FERR#/PBE#, IERR#, PROCHOT#

GTL+ Asynchronous Input

Asynchronous

A20M#, FORCEPR#, IGNNE#, INIT#, LINT0/

INTR, LINT1/NMI, SMI#, STPCLK#

GTL+ Asynchronous Output

Asynchronous

THERMTRIP#

FSB Clock

Clock

BCLK1, BCLK0

TAP Input

Synchronous to TCK

TCK, TDI, TMS TRST#

TAP Output

Synchronous to TCK

TDO

Power/Other

BSEL[2:0], COMP[7:0], GTLREF_ADD_C[1:0],

GTLREF_DATA_C[1:0], LL_ID[1:0],

MS_ID[1:0], PWRGOOD, Reserved, SKTOCC#,

TEST_BUS, TESTHI[11:0], THERMDA,

THEMRDA2, THERMDC, THERMDC2, VCC, VCCA,

VCCIOPLL, VCC_DIE_SENSE, VCC_DIE_SENSE2,

VID[5:0], VID_SELECT, VSS_DIE_SENSE,

VSS_DIE_SENSE2, VSS, VSSA, VTT, VTTOUT,

VTTPWRGD

Signals

Associated Strobe

REQ[4:0]#,A[16:3]

ADSTB0#

A[35:17]#

ADSTB1#

D[15:0]#, DBI0#

DSTBP0#, DSTBN0#

D[31:16]#, DBI1#

DSTBP1#, DSTBN1#

D[47:32]#, DBI2#

DSTBP2#, DSTBN2#

D[63:48]#, DBI3#

DSTBP3#, DSTBN3#

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