User`s guide

AT2LP DDK board User’s Guide
4
Recommended Settings
Jumper/
Switch
Name Bus powered CF Self powered DVD or
HDD
J1 CF connector CF unused
J2 40-pin IDE
connector
Unused 80-pin IDE cable
J3 USB connector USB USB
J4 VBUSPWRD 1-2 = Bus-Powered 2-3 = Self-powered
J5, J6,
J8, J10,
J14, J15
GPIO input signals Application-specific Application-specific
J7 Compact Flash
power source
VCC_3.3v (recommended) =
Supply 3.3v to the CF socket
N/A
J8 GPIO Application-specific Application-specific
J9 EEPROM enable Inserted Inserted
J10 GPIO Application-specific Application-specific
J11 CompactFlash power
control select
1-2 = Bus-powered. CF power
is driven by PWR500# pin.
2-3 = Self-powered. CF
power is driven by the
DRV_PWR_VALID
signal (CF CD2#)
J12 External power
connector
Do not supply power through
this connector in bus-powered
mode.
Connect to standard 4-pin
floppy connector. 12v is
not required
J13 Power select 1-2 = Bus power. Board is
powered from USB (J3).
2-3 (default) = Self
(External) power. Board
is powered from J12.
J14, J15 GPIO Application-specific Application-specific
J16, J17 UDMA on CF socket Connect these two jumpers to
enable UDMA on the CF
socket for micro drive class
devices. If these lines are
connected to a CF that is not
UDMA capable, the CF may
interfere with any other
devices on the bus.
N/A
(CF socket is not used)
SW1-1 BUS_PWR_VALID
/ ATA_EN
OFF (ATA is enabled) OFF (ATA is enabled)
SW1-2 SPARE
SW1-3 SPARE
SW1-4 LED enable OFF = Disable power LED,
GPIO LEDs
ON (default) = Enable
power LED, GPIO LEDs