ARM-USB-OCD
rev 1.00/07-2006
ARM-USB-OCD
is unique device which combine
JTAG debugging
hardware,
RS232 virtual port
and
power supply adapter
in one single
compact form. Many of the new laptop computers have no parallel nor serial
ports but only USB, with ARM-USB-OCD you can debug your ARM boards,
have full featured virtual RS232 port with all modem signals on it and the
power jack can provide three fixed value voltages
5V – 9V – 12V DC
via
jumper selection.
The base features are:
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based on
FT2232L
IC from Future Technology Devices International Ltd.
fast speed
USB 2.0 JTAG
dongle interface, can be used with any ARM devices for programming and debugging
(which are currently supported by openOCD).
the JTAG cable uses ARM's standard 2x10 pin JTAG connector
supports ARM targets working in voltage range
2.0 – 5.0 V DC
software supported by
OpenOCD
(open source) debugger
adds virtual
RS232
port to your computer with all modem signals like: DTR, DSR, DCD, RTS, CTS, Rx, Tx
can be used as
power supply
to your target board with three jumper selectable power supplies: 5V 9V and 12VDC,
USB source current is limited with resetable fuse at 300mA, at the different output voltage the maximum current is
different: 5V/200mA, 9V/100mA, 12V/70mA, note that this also depend on your USB host current capabilities, if other
USB devices are attached to your computer or if the laptop is running on batteries these figures may be different and
depend on your computer USB host.
CD with Windows installer
for full featured and open source tools as alternative to the commercial ARM
development packages:
GCC C compiler, openOCD debugger
and
Eclipse IDE.
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FT2232 signal assignments:
JTAG signals
VREF
– voltage follower input for the output buffers adjust JTAG signals
as per your target board voltage levels
ADBUS0
->
TCK;
ADBUS1
->
TDI;
ADBUS2
->
TDO;
ADBUS3
->
TMS;
ADBUS4
-> 0 to
enable
JTAG buffers;
ADBUS5
-> 0 if
target
present;
ADBUS6
->
TSRST
in;
ADBUS7
->
RTCK;
ACBUS0
->
TRST;
ACBUS2
->
TRST
buffer enable
ACBUS1
->
TSRST;
ACBUS3
->
RED LED;
Power supply jumpers:
RS232 signals
BDBUS0
-> RS232
Tx
BDBUS1
-> RS232
Rx
BDBUS2
-> RS232
RTS
BDBUS3
-> RS232
CTS
BDBUS4
-> RS232
DTR
BDBUS5
-> RS232
DSR
BDBUS6
-> RS232
DCD
Copyright © 2006, OLIMEX Ltd. All right reserved.
http://www.olimex.com/dev
the power supply jumpers are on
right side of the 2x10 pin JTAG
connector.
-
If both jumpers are open
the output voltage is
12VDC
-
If
right
jumper is closed
the output voltage is
9VDC
-
If
left
jumper is closed the
output voltage is
5VDC
(this is the default setting)
The inner pin of the power supply
jack is +
