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Discussion Groups | 68HC12 | Promlem with the MC9S12D64's PLL with USB Multilink
Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
Promlem with the MC9S12D64's PLL with USB Multilink - shcaoyh - Jun 20 10:19:00 2005
I use the P&E USB HCS08/HCS12 Multilink as the development tool,
the target is the 80 pins MC9S12D64. This board is a simple circuit,
I
use a 16MHz quartz crystal with the Colpitts configuration. With the
REFDV=1 and the SYNR=2, the CPU bus frequence is 24MHz. The PLL
initialization application have a delay before switch the system
clock
to the PLLCLK, but when I switch the clock source with the USB
HCS08/HCS12 Multilink the program runs away. And after down load the
program to the target, turn on the power or reset the target without
the USB HCS08/HCS12 Multilink the PLL works well.
What is the problem, can anybody help me?
______________________________
controlSUITE™ software. Comprehensive. Intuitive. Optimized.
Real-world software for real-time control. Details Here!
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
Re: Promlem with the MC9S12D64's PLL with USB Multilink - Mark L. Cukier - Jun 20 10:27:00 2005
Hello:
Please ensure that the "sych to PLL frequency change" checkbox is
checked (this is in the debugger options dialog). If you're still having
problems, feel free to e-mail me off-list so that I can get some more
details from you (possibly a source code snippet) so we can get you up
and running!
Regards,
Mark
P&E
shcaoyh wrote:
> I use the P&E USB HCS08/HCS12 Multilink as the development tool,
>the target is the 80 pins MC9S12D64. This board is a simple circuit,
>I
>use a 16MHz quartz crystal with the Colpitts configuration. With the
>REFDV=1 and the SYNR=2, the CPU bus frequence is 24MHz. The PLL
>initialization application have a delay before switch the system
>clock
>to the PLLCLK, but when I switch the clock source with the USB
>HCS08/HCS12 Multilink the program runs away. And after down load the
>program to the target, turn on the power or reset the target without
>the USB HCS08/HCS12 Multilink the PLL works well.
> What is the problem, can anybody help me? >
>Yahoo! Groups Links
--
--
____________________________
*Mark L. Cukier*, /Design Engineer/
P&E Microcomputer Systems
656 Beacon Street, Floor 2
Boston, MA 02215
_________________________________
e-mail: mark@mark... <mailto:mark@mark...>
phone : (617) 353-9206 x19
fax : (617) 353-9205
_________________________________
visit us on the web at: http: //www.pemicro.com
______________________________
controlSUITE™ software. Comprehensive. Intuitive. Optimized.
Real-world software for real-time control. Details Here!
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
Please ensure that the "sych to PLL frequency change" checkbox is
checked (this is in the debugger options dialog). If you're still having
problems, feel free to e-mail me off-list so that I can get some more
details from you (possibly a source code snippet) so we can get you up
and running!
Regards,
Mark
P&E
shcaoyh wrote:
> I use the P&E USB HCS08/HCS12 Multilink as the development tool,
>the target is the 80 pins MC9S12D64. This board is a simple circuit,
>I
>use a 16MHz quartz crystal with the Colpitts configuration. With the
>REFDV=1 and the SYNR=2, the CPU bus frequence is 24MHz. The PLL
>initialization application have a delay before switch the system
>clock
>to the PLLCLK, but when I switch the clock source with the USB
>HCS08/HCS12 Multilink the program runs away. And after down load the
>program to the target, turn on the power or reset the target without
>the USB HCS08/HCS12 Multilink the PLL works well.
> What is the problem, can anybody help me? >
>Yahoo! Groups Links
--
--
____________________________
*Mark L. Cukier*, /Design Engineer/
P&E Microcomputer Systems
656 Beacon Street, Floor 2
Boston, MA 02215
_________________________________
e-mail: mark@mark... <mailto:mark@mark...>
phone : (617) 353-9206 x19
fax : (617) 353-9205
_________________________________
visit us on the web at: http: //www.pemicro.com
______________________________
controlSUITE™ software. Comprehensive. Intuitive. Optimized.
Real-world software for real-time control. Details Here!
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )