40
Chapter 5 Ports and Connectors
Chapter 5
www.dfi.com
LPC Connector
The Low Pin Count Interface was defined by Intel
®
Corporation to facilitate the industry’s transi-
tion towards legacy free systems. It allows the integration of low-bandwidth legacy I/O compo-
nents within the system, which are typically provided by a Super I/O controller. Furthermore, it
can be used to interface firmware hubs, Trusted Platform Module (TPM) devices and embedded
controllers. Data transfer on the LPC bus is implemented over a 4 bit serialized data interface,
which uses a 24MHz LPC bus clock. For more information about LPC bus, please refer to the
Intel
®
Low Pin Count Interface Specification Revision 1.1’. The table below indicates the pin as
-
signments of the LPC connector.
Pin
Pin Assignment
Pin
Pin Assignment
1
L_CLK
2
L_AD1
3
L_RST#
4
L_AD0
5
L_FRAME#
6
3V3
7
L_AD3
8
GND
9
L_AD2
10
Kev
11
INT_SERIRQ
12
GND
13
5VSB
14
5V
Intel
Q170
1
2
5
6
SMBus
+12V
Power
1
5
4
8
PCIe 2 (PCIe x4)
PCIe 4 (PCIe x4)
Standby
Power LED
PCIe 1 (PCIe x16 or PCIe x8)
PCIe 3 (PCIe x8)
1
ATX
Power
12
24
13
1
2
11
12
Front
Panel
1
2
LAN LED
7
8
PS/2 KB/MS
USB 6
USB 5
USB 2.0
DVI-D
DP++
LAN 1
USB 2
USB 1
USB 3.0
LAN 2
USB 4
USB 3
USB 3.0
I C
Line-out
Mic-in
Socket LGA1151
2 1
13
14
LPC
TPM
(optional)
Battery
Buzzer
Chassis
Intrusion
1
SPI Flash
BIOS
1
1
1
1
1
1
SATA 1
SATA 3
SATA 5
SATA 0
SATA 2
SATA 4
SATA 3.0
1
S/PDIF
1
DDR4_1
DDR4_3
DDR4_4
DDR4_2
System Fan 2
1
1
CPU Fan
1
System Fan 1
1
1
2
19
DIO
1
2
10
9
1
2
10
9
1
2
10
9
1
2
10
9
1
2
10
9
COM 5
COM 2
COM 6
COM 3
COM 4
1
2
10
9
USB 7-8
USB 2.0
1
2
5
6
1
2
5
6
1
2
5
6
1
2
5
6
5
1
6
2
5
1
6
2
5
1
6
2
5
1
6
2
COM 1
VGA
11
10
1
11
10
1
USB 5-6
USB 7-8
Nuvoton
NCT6106D
Realtek
ALC888
Intel
WGI219LM
Intel
WGI210AT
ASMedia
ASM1442
Chrontel
CH7517A
1
2
10
9
USB 9-10
DVI-D
DP++
COM 1
VGA
DDR4_1
DDR4_3
1
1
SATA 0
1
SATA 1
1
SATA 2
1
SATA 3
SATA 3.0
Chassis
Intrusion
1
11
10+
1
USB 5-6
USB 2.0
1
2
10
9
USB 7-8
1
2
40
39
LVDS LCD Panel
1
LCD/Inverter Power
Intel
WGI219LM
Intel
WGI210AT
ASMedia
ASM1442
Chrontel
CH7517A
1
ATX
Power
12
24
13
1
2
11
12
1
2
7
8
1
Realtek
ALC888
1
1
2
5
6
SMBus
1
2
7
8
SPI
Program
Header
LAN LED
Front
Panel
1
2
10
9
USB 9-10
NXP
PTN3460
1
System
Fan 2
DDR4_2
(only for Q170)
20
SPI Flash
BIOS
Line-out
Mic-in
LAN 1
USB 2
USB 1
USB 3.0
LAN 2
USB 4
USB 3
USB 3.0
PS/2 KB/MS
USB 6
USB 5
USB 2.0
Socket LGA1151
Standby
Power LED
Intel
Q170
TPM
(optional)
2 1
13
14
LPC
+12V
Power
1
5
4
8
Buzzer
1
S/PDIF
1
2
10
9
1
2
10
9
1
2
10
9
1
2
10
9
1
2
10
9
COM 5
COM 6
COM 2
COM 3
COM 4
1
2
19
Digital I/O
CPU Fan
1
System Fan 1
1
PCI 1
PCI 2
PCIe x4
ITE
IT8893E
PCIe x16
Battery
1
1
1
2
5
6
5
1
6
2
5
1
6
2
5
1
6
2
5
1
6
2
5
1
6
2
5
1
6
2
5
1
6
2
5
1
6
2
Mini PCIe
(only for Q170)
DDR4_2
(only for Q170)
USB 3.0
(only for Q170)
2 1
1413
2 1
1413
SD330-Q170/H110
SD331-C236/Q170
