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update jtag_speed/khz docs a bit.

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git-svn-id: svn://svn.berlios.de/openocd/trunk@850 b42882b7-edfa-0310-969c-e2dbd0fdcd60
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oharboe 2008-07-21 16:03:15 +00:00
parent dfbb9f3e89
commit 265e4e121a
1 changed files with 7 additions and 6 deletions
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doc/openocd.texi
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@ -322,12 +322,13 @@ Segger jlink usb adapter
@end itemize
@itemize @bullet
@item @b{jtag_speed} <@var{reset speed}> <@var{post reset speed}>
@item @b{jtag_speed} <@var{reset speed}>
@cindex jtag_speed
Limit the maximum speed of the JTAG interface. Usually, a value of zero means maximum
speed. The actual effect of this option depends on the JTAG interface used. Reset
speed is used during reset and post reset speed after reset. post reset speed
is optional, in which case the reset speed is used.
speed. The actual effect of this option depends on the JTAG interface used.
The speed used during reset can be adjusted using setting jtag_speed during
pre_reset and post_reset events.
@itemize @minus
@item wiggler: maximum speed / @var{number}
@ -339,7 +340,7 @@ is optional, in which case the reset speed is used.
Note: Make sure the jtag clock is no more than @math{1/6th × CPU-Clock}. This is
especially true for synthesized cores (-S).
@item @b{jtag_khz} <@var{reset speed kHz}> <@var{post reset speed kHz}>
@item @b{jtag_khz} <@var{reset speed kHz}>
@cindex jtag_khz
Same as jtag_speed, except that the speed is specified in maximum kHz. If
the device can not support the rate asked for, or can not translate from
@ -689,7 +690,7 @@ is set to 10kHz for reset and 8MHz for post reset.
@smallexample
openocd -f interface/parport.cfg -c "jtag_khz 10 8000" -f target/str710.cfg -c "init" -c "reset"
openocd -f interface/parport.cfg -f target/str710.cfg -c "init" -c "reset"
@end smallexample