I’ve been working with a IMX35 (arm11) and LPC3220 (arm9) targets. I have a IAR branded J-link and a Signalyzer (FT2232 based). I’ve noticed that download into RAM speeds with the Signalyzer are 5x or more faster (~100 KByte/sec) than with the J-Link (~20 KByte/sec). I’m testing with OpenOCD 0.4.0 on Ubuntu 10.04 using the same configuration files except switching the interface include between signalyzer.cfg and jlink.cfg.
Are there any tips on how to improve the J-Link’s speed? Tests by others (http://www.yagarto.de/projects/jtagspeed/index.html) seems to indicate the j-link is capable of higher speeds (at least with segger’s GDB server).