Intel C2518 FH8065501516710 Data Sheet

Product codes
FH8065501516710
Page of 746
Volume 3—Signal Names and Descriptions—C2000 Product Family
LPC Interface Signals
Intel
®
 Atom™ Processor C2000 Product Family for Microserver
Datasheet, Vol. 3 of 3
September 2014
600
Order Number: 330061-002US
LPC_CLKOUT1/
GPIOS_27
O
CMOS_V3P3
1
V3P3S
LPC Clock: These signals are 
the clocks driven by the 
processor to the LPC devices. 
Each clock can support up to 
two loads. 
Note:
If the primary boot 
device is connected 
via the LPC interface, 
it uses 
LPC_CLKOUT[0]. 
Using the LPC 
interface for the boot 
device is not 
supported at this 
time and may not 
ever be supported by 
this Intel product. 
Only use the SPI 
interface for boot 
device connection.
If the LPC_CLKOUT1 interface 
is not used, the signals can be 
used as GPIO Port 27. 
LPC_CLKRUNB/
GPIOS_28
I/O, 
OD
CMOS_V3P3_
OD
1
EXT PU
V3P3S
Clock Run: (active low). Bi-
directional signal that gates 
the operation of the 
LPC_CLKOUTx. Once an 
interrupt sequence has 
started, LPC_CLKRUN_B 
remains asserted to allow the 
LPC_CLKOUTx to run. If the 
LPC_CLKRUNB interface is not 
used, the signals can be used 
as GPIO Port 28. 
ILB_SERIRQ/GPIOS_29
I/O
CMOS_V3P3
1
20K, PU
V3P3S
Serial Interrupt Request: This 
pin conveys the serial 
interrupt protocol. If the 
ILB_SERIRQ interface is not 
used, the signals can be used 
as GPIO Port 29. 
TOTAL
9
Table 31-14. LPC Signals (Sheet 2 of 2)
Signal Name
I/O 
Type
I/O Buffer 
Type
Ball 
Count
Internal 
Resistor 
PU/PD
External 
Resistor 
PU/PD
Power 
Rail
Description