Intel C2350 FH8065401488914 Data Sheet

Product codes
FH8065401488914
Page of 746
Volume 3—Signal Names and Descriptions—C2000 Product Family
GbE, SMBus, and NC-SI Signals
Intel
®
 Atom™ Processor C2000 Product Family for Microserver
Datasheet, Vol. 3 of 3
September 2014
594
Order Number: 330061-002US
GBE_SMBCLK/
NCSI_CLK_IN
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. If the GBE_SMBCLK 
interface is not used, the 
signals can be used as the 
NCSI_CLK_IN signal.
As an input signal, the 
NCSI_CLK_IN must be 
connected to the 50-MHz 
NC-SI REF_CLK generator on 
the platform board.
This same signal pin can be 
programmed to provide the 
50-MHz NC-SI REF_CLK for 
the NC-SI devices on the 
platform board including the 
SoC. If so programmed, the 
NCSI_CLK_IN pin also 
functions as the 
“NCSI_CLK_OUT” of the SoC.
Note:
If not used, have an 
external pull-down 
resistor. Also, this 
clock is in addition to 
and separate from 
the XTAL clock. 
GBE_SMBALRT_N/
NCSI_CRS_DV
I/O, 
OD
CMOS_V3P3_
OD
1
20K, PU
EXT PU
V3P3A
GbE SMBus Alert. Acts as an 
interrupt of a slave device on 
SMBus. External pull-up 
resistor required. If the 
GBE_SMBALRT_N interface is 
not used, the signals can be 
used as NCSI_CRS_DV Carrier 
Sense/Receive Data Valid 
(CRS/DV).
GBE_SDP0_0/
GPIO_SUS17
I/O
CMOS_V3P3
1
20K, PU
V3P3A
GbE Port 0 SW Defined Pin 0: 
The SDP pins are reserved 
pins that are software 
programmable write/read 
input/output capability. These 
default to inputs upon power-
up, but may have their 
direction and output values 
defined in the EEPROM. The 
SDP bits may be mapped to 
the General Purpose Interrupt 
bits when configured as 
inputs. The SDP0_0 pin can 
be used as a watchdog output 
indication. If the GBE_SDP0_0 
interface is not used, the 
signal can be used as GPIO 
SUS Port 17.
Table 31-12. GbE, SMBus, and NC-SI Signals (Sheet 2 of 5)
Signal Name
I/O 
Type
I/O Buffer 
Type
Ball 
Count
Internal 
Resistor 
PU/PD
External 
Resistor 
PU/PD
Power 
Rail
Description