Table of Contents
Advertisement
Chapter 12
12.2 Signal Descriptions
/RESIN and PWRGOOD (Reset Inputs)
Input on CPU modules
®
When PO
®
the onbo
active hardware reset for modules
Speaker
Open collector output on modules that drive a piezo electronic speaker
®
Input on
®
An 8 Ohm loudspeaker also can be connecte
®
of curren
Connect
®
modules
KBDAT (Keyboard Data
Bidirectional I/O pin on C
®
Keyboard
®
KBCLK (Keyboard Clock)
Bidirectional I/O pin on
®
Keyboard ock signal
®
BATT (System Battery Connection)
This pin
®
The bat
®
recomm
A battery is not needed to hold CMOS setup data. Your configurations for hard disks,
®
floppy drives, and other peripherals are saved in an o
need a battery to save the CMOS date and time when power supp
Kontron User's Guide MOPSlcdLX
WERGOOD goes high, it starts the reset generator on the CPU module to pull
ard reset line high after a valid reset period. You also can use this pin as a low
mod
ules th
at connects a 5
t li
mitation the v
olume wi
only
one speaker to this pin. The C
als
o can use this
sign
al to drive the system speaker
)
PU m
odules
dat
a signal
CPU m
odules
cl
conne
cts a syste
m batt
ery to all m
tery vo
ltage has
to be
higher tha
ended
25
V piezo
electronic
speak
er to this
d betwe
en SPEAK
ll be low
PU usua
lly drives
odules
n 2.4 V and lo
wer than 3.6 V. A
nboard EEPROM. However, you
Keyboard Interface
pin
ER an
d GND,
but
because
this
pin. However, other
3 V bat
tery is
ly is turned off
Advertisement
Table of Contents
