Datasheet

Section 1 Overview
Rev. 2.00 Sep. 28, 2009 Page 14 of 870
REJ09B0429-0200
Type Symbol Pin No. I/O Name and Function
LAD3 to LAD0 55 to 58
Input/
Output
Transfer cycle type/address/data I/O pins
LFRAME 54 Input
Input pin indicating transfer cycle start and
forced termination
LRESET 53 Input
LPC reset pin. When this pin is low, a reset
state is entered.
LCLK 52 Input PCI clock input pin
SERIRQ 51
Input/
Output
LPC serialized host interrupt request signal
LSCI, LSMI,
PME
66, 65,
64
Input/
Output
LPC auxiliary output. Their functions are
general I/O port.
GA20 63
Input/
Output
GATE A20 control signal output pin; also
used as the input pin for monitoring the
output state.
CLKRUN 62
Input/
Output
Input/output pin used to request starting the
LCLK operation while LCLK is stopped.
LPC Interface
(LPC)
LPCPD 61 Input
Input pin used to control shutdown of the
LCP module
Event
Counter
EVENT15 to
EVENT8,
EVENT7 to
EVENT5,
EVENT4 to
EVENT0
113 to 120,
33 to 35,
37 to 41
Input Event counter input pins
Retain state
output pins
RS11,
RS10 to RS8,
RS7 to RS5,
RS4,
RS3 to RS0
141,
92 to 94,
4 to 2,
138,
132 to 129
Output The outputs on these pins are only
initialized by a system reset.
Debounced
input pins
DB15 to DB8
85 to 78
Input Pins with noise eliminating functions.
Large current
output pins
HC7 to HC5,
HC4,
HC3 to HC0
4 to 2,
138,
132 to 129
Output These pins can be used to drive LEDs or
for other purposes where large currents are
required.