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LPC Connector
The Low Pin Count Interface was defined by Intel
sition towards legacy free systems. It allows the integration of low-bandwidth legacy I/O com-
ponents 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 embed-
ded controller solutions. Data transfer on the LPC bus is implemented over a 4 bit serialized
data interface, which uses a 33MHz LPC bus clock. For more information about LPC bus refer
to the Intel
Low Pin Count Interface Specification Revision 1.1'. The table below indicates the
®
pin fuctions of the LPC connector.
Pins
Pin Assignment
L_CLK
1
L_RST#
3
L_FRAME#
5
L_AD3
7
L_AD2
9
INT_SERIRQ
11
5VSB
13
Chapter 2 Hardware Installation
LPC
14 13
2 1
Corporation to facilitate the industry's tran-
®
Pins
Pin Assignment
L_AD1
2
L_AD0
4
3V3
6
8
GND
10
Kev
12
GND
5V
14
Chapter 2
Connecting the EXT-RS232/RS485 Card to SD100
With DFI's proprietary technology, SD100 supports two extension modules for additional four
COM ports. The EXT-RS232/RS485 card is connected to SD100 via the LPC connector. The illus-
trations below guide you how to connect the extension module to the carrier board.
Note:
The system board used in the following illustrations may not resemble the actual one.
These illustrations are for reference only.
28
Top View
LPC
COM
Bottom View
LPC
EXT-RS485
EXT-RS485
DFI Carrier Board
EXT-RS232/RS485
Additional 4 COM
www.dfi.com
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