Intel G870 BX80623G870 User Manual

78

Datasheet, Volume 1

1.

Refer to 

 for signal description details.

2.

SA and SB refer to DDR3 Channel A and DDR3 Channel B.

3.

The maximum rise/fall time for UNCOREPWRGOOD is 20 ns.

All Control Sideband Asynchronous signals are required to be asserted/de-asserted for 
at least 10 BCLKs with a maximum Trise/Tfall of 6 ns for the processor to recognize 
the proper signal state. See 

 for the DC specifications.

Due to the voltage levels supported by other components in the Test Access Port (TAP) 
logic, Intel recommends the processor be first in the TAP chain, followed by any other 
components within the system. A translation buffer should be used to connect to the 
rest of the chain unless one of the other components is capable of accepting an input of 
the appropriate voltage. Two copies of each signal may be required with each driving a 
different voltage level. 

The processor supports Boundary Scan (JTAG) IEEE 1149.1-2001 and IEEE 1149.6-
2003 standards. Some small portion of the I/O pins may support only one of these 
standards.

Sense Points

VCC_SENSE, VSS_SENSE, VCCIO_SENSE, 

VSS_SENSE_VCCIO, VAXG_SENSE, VSSAXG_SENSE

Other

SKTOCC#, DBR#

Differential

PCI Express Input

PEG_RX[15:0], PEG_RX#[15:0], PE_RX[3:0], 

PE_RX#[3:0]

Differential

PCI Express Output

PEG_TX[15:0], PEG_TX#[15:0], PE_TX[3:0], 

PE_TX#[3:0]

Single Ended

Analog Input

PEG_ICOMP0, PEG_COMPI, PEG_RCOMP0

Differential

DMI Input

DMI_RX[3:0], DMI_RX#[3:0]

Differential

DMI Output

DMI_TX[3:0], DMI_TX#[3:0]

Single Ended

FDI Input

FDI_FSYNC[1:0], FDI_LSYNC[1:0], FDI_INT

Differential

FDI Output

FDI_TX[7:0], FDI_TX#[7:0]

Single Ended

Analog Input

FDI_COMPIO, FDI_ICOMPO