Jackson Labs FireFly-1A GPSDO, User Manual

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FireFly-1A User Manual
22 © 2011 Jackson Labs Technologies, Inc.
http://www.flashmagictool.com/
If the Philips LPC2000 tool doesn’t work, please use this one.
4.3 Putting the PCB into In-Circuit Programming (ISP) mode
Momentarily short-out pins 1 and 2 of header J2 using a jumper or other conductive material during
power-on. Both LED’s should remain off, indicating the unit is properly placed into ISP mode. If the
LED’s light up after power-on, the unit is not in ISP mode.
Figure 4.1 Location of J2
4.4 Downloading the firmware
Download the latest version of FireFly-1A firmware from the Jackson Labs Technologies, Inc.
support website and store it in a place that will be remembered. The file is in .hex format.
The unit needs to be connected to the computer’s RS-232 serial port prior to firmware download.
Connect a DB-9 serial connector to the FireFly-1A as indicated in Section
2.1.1 .
4.4.1 Philips LPC2000 Flash Utility
A) Open the LPC2000 utility. Set the COM port in the LPC2000 application as needed on your PC.
S
HORT OUT PINS
1
AND
2
OF HEADER PRIOR TO
P
OWER
-
ON
.