Lpc Connector; Standby Power Led - DFI KU173 User Manual

LPC Connector

The Low Pin Count Interface was defi ned by Intel
towards legacy free systems. It allows the integration of low-bandwidth legacy I/O components
within the system, which are typically provided by a Super I/O controller. Furthermore, it can be
used to interface fi rmware hubs, Trusted Platform Module (TPM) devices and embedded control-
ler solutions. 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 refer to the Intel
Pin Count Interface Specifi cation Revision 1.1'. The table below indicates the pin fuctions of the
LPC connector.
Pin Pin Assignment
1
CLK_24M
3
RST#
5
FRAME#
7
LAD3
9
LAD2
11
SERIRQ
13
5VSB
Chapter 2 Hardware Installation
Chapter 2
LPC 13 1
14 2
® Corporation to facilitate the industry's transition
Low
®
Pin Pin Assignment
2
LAD1
4
LAD0
6
VCC3
8
GND
10
---
12
GND
14
5V

Standby Power LED

This LED will lit red when the system is in the standby mode. It indicates that there is power
on the system board. Power-off the PC and then unplug the power cord prior to installing any
devices. Failure to do so will cause severe damage to the motherboard and components.
27
Standby Power LED
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