Intel i5-2500K BX80623I52500K User Manual

Datasheet, Volume 1

75

Signals are grouped by buffer type and similar characteristics as listed in 

buffer type indicates which signaling technology and specifications apply to the signals. 
All the differential signals, and selected DDR3 and Control Sideband signals have On-
Die Termination (ODT) resistors. There are some signals that do not have ODT and 
need to be terminated on the board.

Differential

CMOS Input

BCLK[0], BCLK#[0]

Differential

DDR3 Output

SA_CK[3:0], SA_CK#[3:0]
SB_CK[3:0], SB_CK#[3:0]

Single Ended

DDR3 Output

SA_RAS#, SB_RAS#, SA_CAS#, SB_CAS#
SA_WE#, SB_WE#
SA_MA[15:0], SB_MA[15:0]
SA_BS[2:0], SB_BS[2:0]
SM_DRAMRST#
SA_CS#[3:0], SB_CS#[3:0]
SA_ODT[3:0], SB_ODT[3:0]
SA_CKE[3:0], SB_CKE[3:0]

Single ended 

DDR3 Bi-directional

SA_DQ[63:0], SB_DQ[63:0]

Differential

DDR3 Bi-directional

SA_DQS[8:0], SA_DQS#[8:0]
SB_DQS[8:0], SB_DQS#[8:0]

Single Ended

CMOS Input

TCK, TDI, TMS, TRST#

Single Ended

CMOS Output

TDO

Single Ended

Asynchronous CMOS Output

TAPPWRGOOD

Single Ended

CMOS Input

CFG[17:0]

Single Ended

Asynchronous CMOS/Open 

Drain Bi-directional

PROCHOT#

Single Ended

Asynchronous CMOS Output

THERMTRIP#, CATERR#

Single Ended

Asynchronous CMOS Input

SM_DRAMPWROK, UNCOREPWRGOOD

3

, PM_SYNC, 

RESET# 

Single Ended

Asynchronous Bi-directional

PECI

Single Ended

CMOS Input
Open Drain Output
Bi-directional CMOS Input 

/Open Drain Output 

VIDALERT#
VIDSCLK
VIDSOUT

Power

VCC, VCC_NCTF, VCCIO, VCCPLL, VDDQ, VCCAXG

Ground

V

SS

No Connect and test point

RSVD, RSVD_NCTF, RSVD_TP, FC_x