Corporation Personal Computer User Manual

Pegasus Fast Start Guide 7460572 Rev A Page 4 of 12
MAINPOWERINPUTCONNECTOR(PWR1)
Inputpowermaybesuppliedeitherthroughthisconnector,theI/Opowerconnector,ordirectly
throughthePC/104buspowerpins.

Ground 1 2 +5VDC
Ground 3 4 +12VDC
Ground 5 6‐12VDC
Key 7 8 +5VDC
Ground 9 10 +5VDC

Pegasusrequiresonly+5VDCinputpowertooperate.HoweversincethePC/104bus includespinsfor
+3.3Vand±12V,thesevoltagesmaybesuppliedthroughthisconnectorifdesired.Alsoifa3.3VLCDis
used, then 3.3V must be supplied through this power connector.Multiple +5V and ground pins are
provided for extra current carrying capacity if needed.Each pin is rated at 3A max.For applications
requiring less than 3A, the first 4 pins may be connected to a standard 4‐pin miniature PC power
connector,orthealternatepowerI/Oconnectormaybeused.


I/OPOWERCONNECTOR(IO_P1)
This connector provides an alternate connector for either input power to the system oroutput power
forusewithexternaldrives.

1
+5VI/O
2
Ground
3
Ground
4
+12VI/O

Diamond Systems’ cable number 6981006 mates with this connector.It provides a standard full‐size
power connector for a hard drive  or CD‐ROM drive and a standard miniature power connector for a
floppydrive.


EXTERNALBATTERYCONNECTOR(EBAT1)
Thisconnectorprovidesameanstoconnectanexternalbatteryto
thePegasusSBC.

1
Ground
2
+3.3VDC


ETHERNETCONNECTOR(LAN1)
PegasussupportsbothapinheaderandanoptionalRJ‐45jackforEthernetsignals.Thepinheaderpin
out is shown here.The RJ‐45 pin out matches industry  standards.The LED signals are referenced to
ground.

TX+ 1 2 TX‐
NC 3 4 RX‐
RX+ 5 6 LinkLED‐
LinkLED+ 7 8 ActLED+
Key 9 10 ActLED‐
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
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