Intel C2518 FH8065501516710 Data Sheet

Intel

®

 Atom™ Processor C2000 Product Family for Microserver

September 2014

Datasheet, Vol. 3 of 3

Order Number: 330061-002US

593

GBE_TXP[3:0]

O

LV DIFF

4

V1P0A

SerDes/SGMII Serial Data 

output Port: Differential 

SGMII/SerDes Transmit 

interface.

GBE_TXN[3:0]

O

LV DIFF

4

V1P0A

SerDes/SGMII Serial Data 

output Port: Differential 

SGMII/SerDes Transmit 

interface.

GBE_RXP[3:0]

I

LV DIFF

4

V1P0A

SerDes/SGMII Serial Data 

input Port: Differential SGMII/

SerDes Receive interface.

GBE_RXN[3:0]

I

LV DIFF

4

V1P0A

SerDes/SGMII Serial Data 

input Port: Differential SGMII/

SerDes Receive interface.

GBE_REFCLKP
GBE_REFCLKN

I

LV  DIFF

1

V1P0A

GbE 100 MHz differential clock 

with 100 ppm maximum jitter. 

External SerDes/SGMII 

differential 100 MHz reference 

clock from an external 

generator. This clock must be 

powered from the Suspend 

(SUS) power well. When the 

device is enabled for 2.5-GbE 

operation, the standard 100-

MHz reference clock must be 

replaced with a 125-MHz 

reference clock.

GBE_OBSP
GBE_OBSN

O

Analog

2

V1P0A

GBE RCOMP: Connect the 

GBE_OBSP pin to the 

GBE_OBSN pin using a 402-Ω 

±1% resistor.

GBE_SMBD/

NCSI_TX_EN

I/O, 

OD

CMOS_V3P3_

OD

1

20K, PU

EXT PU

V3P3A

GbE SMBus Clock. One clock 

pulse is generated for each 

data bit transferred. An 

external pull-up resistor 

required. Resistor value is 

calculated based on the bus 

load. (Refer to the Platform 

Design Guide).

If the GBE_SMBD interface is 

not used, the signals can be 

used as NCSI_TX_EN Transmit 

Enable (input). 

If not used, have an 

external pull-down 

resistor.