Electrical Specifications
Table 2-3.
Signal Groups (Sheet 1 of 2)
1
Signal Group
Type
Signals
System Reference Clock
Differential
Differential Pair, HSTL
SYSCLK_DP, SYSCLK_DN, SYSCLK_LAI_N,
SYSCLK_LAI
Intel® QPI Interface Signal Groups
Differential
Differential
SCiD 2 Input
QPI[3:0]_DRX_D[n/p][19:0],
QPI[3:0]_CLKRX_D[p/n]
SCiD 2 Output
QPI[3:0]_DTX_D[n/p][19:0],
QPI[3:0]_CLKTX_D[p/n]
Intel® SMI Signals
Differential
Inputs
Output
Input
FBD0NBICLK[A/B][P/N]0
FBD1NBICLK[C/D][P/N]0
Differential
Differential
Differential
TAP
FBD0SBOCLK[A/B][P/N]0
FBD1SBOCLK[C/D][P/N]0
FBD0NBI[A/B][P/N][13:0]
FBD1NBI[C/D][P/N][13:0]
Output
FBD0SBO[A/B][P/N][10:0], FBD1SBO[C/D][P/
N][10:0]
Single ended
Single ended
GTL
TCK, TDI,TMS, TRST_N
TDO
GTL-Open Drain
PECI
Single ended
SMBus
CMOS
PECI
Single ended
SPD Bus
CMOS
SMBCLK, SMBDAT, SM_WP
SPDCLK, SPDDAT
Single ended
Strap Pins
CMOS I/OD
Single ended
Single ended
GTL
BOOTMODE[1:0]
SKTID[2:0]
CMOS
Flash ROM Port
Single ended
GTL - OD
FLASHROM_CFG[2:0], FLASHROM_DATI
FLASHROM_CS[3:0]_N, FLASHROM_CLK,
FLASHROM_DATO, FLASHROM_WP_N
ERROR Bus
Single ended
GTL Input, GTL Open Drain
Output
ERROR[0]_N, ERROR[1]_N
Power Up, RESETs
Single ended
Single ended
CMOS Input
GTL Input
PWRGOOD, VIOPWRGOOD,
RUNBIST, RESET_N
Thermal
Single ended
Single ended
Single ended
Single ended
GTL Input
Force_PR_N
GTL
MEM_Throttle[1]_N,MEM_Throttle[0]_N
PROCHOT_N, THERMTRIP_N
Thermalert_N
GTL-Open Drain
CMOS - Open Drain
20
Datasheet Volume 1 of 2