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LPC Debug Connector
Battery
9
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 functions of the LPC connector.
Pin
Pin Assignment
1
CLK
3
RST#
FRAME#
5
LAD3
7
LAD2
9
SERIRQ
11
Chapter 2 Hardware Installation
Chapter 2
1
11
LPC
12
2
®
Corporation to facilitate the industry's tran-
Pin
Pin Assignment
LAD1
2
LAD0
4
3V3
6
GND
8
---
10
48MHz
12
Switch
Battery
26
BMC Reset Button
9
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