All, hi
I design a relatively simple board consisting of a TMS320VC5416, a Flash memory,
and a FPGA.
I use the Flash to place my code.
To program the flash, I declare it external in data space (DROM = 0). I connect
the data and address buses directly from DSP to the Flash memory. Further, I
make OE, WE, and CE signals of the Flash using MSTRB#, DS# and R/W# signals of
DSP.
The MSTRB#, DS# and R/W# signals of DSP active, however, I don't see any
change on data and address buses of DSP.
I also write a simple program to examine I/O signals of DSP. Strangle not only
address and data bus are inactive, But IS# and IOSTRB# are also inactive.
I will be thankful if state your opinions.
Thanks,
-Farhad
Data and Address buses are inactive !
Started by ●July 3, 2007
Reply by ●July 4, 20072007-07-04
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
h...@yahoo.com wrote:
> All, hi
>
> I design a relatively simple board consisting of a TMS320VC5416, a Flash memory, and a FPGA.
>
> I use the Flash to place my code.
>
> To program the flash, I declare it external in data space (DROM = 0). I connect the data and address buses directly from DSP to the Flash memory. Further, I make OE, WE, and CE signals of the Flash using MSTRB#, DS# and R/W# signals of DSP.
>
> The MSTRB#, DS# and R/W# signals of DSP active, however, I don't see any change on data and address buses of DSP.
> I also write a simple program to examine I/O signals of DSP. Strangle not only address and data bus are inactive, But IS# and IOSTRB# are also inactive.
>
> I will be thankful if state your opinions.
>
Its been a bit since I touched a DSP, but I think you also need to have
the MP/MC line pulled the correct direction in order to boot from the
flash.
You might take a look at the bootloader app note for the C54XX family,
it covers all the different boot sources and how to make sure the
correct one is selected.
Brian
- --
- ---[Office 73.2F]--[Outside 62.6F]--[Server 91.4F]--[Coaster 73.5F]---
- ---[ WENATCHEE WSF (366749710) @ 47 36.9426 -122 22.4449 ]---
Software, Linux, Microcontrollers http://www.brianlane.com
AIS Parser SDK http://www.aisparser.com
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (Darwin)
Comment: Remember Lexington Green!
iD8DBQFGiyN6Iftj/pcSws0RAlKzAJ9bQOfZWE9KZeGZh+QLqwCYLtGF0wCfdAud
AzwXgHeRlvY7IJcu2BKpnOQ=heLa
-----END PGP SIGNATURE-----
Hash: SHA1
h...@yahoo.com wrote:
> All, hi
>
> I design a relatively simple board consisting of a TMS320VC5416, a Flash memory, and a FPGA.
>
> I use the Flash to place my code.
>
> To program the flash, I declare it external in data space (DROM = 0). I connect the data and address buses directly from DSP to the Flash memory. Further, I make OE, WE, and CE signals of the Flash using MSTRB#, DS# and R/W# signals of DSP.
>
> The MSTRB#, DS# and R/W# signals of DSP active, however, I don't see any change on data and address buses of DSP.
> I also write a simple program to examine I/O signals of DSP. Strangle not only address and data bus are inactive, But IS# and IOSTRB# are also inactive.
>
> I will be thankful if state your opinions.
>
Its been a bit since I touched a DSP, but I think you also need to have
the MP/MC line pulled the correct direction in order to boot from the
flash.
You might take a look at the bootloader app note for the C54XX family,
it covers all the different boot sources and how to make sure the
correct one is selected.
Brian
- --
- ---[Office 73.2F]--[Outside 62.6F]--[Server 91.4F]--[Coaster 73.5F]---
- ---[ WENATCHEE WSF (366749710) @ 47 36.9426 -122 22.4449 ]---
Software, Linux, Microcontrollers http://www.brianlane.com
AIS Parser SDK http://www.aisparser.com
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (Darwin)
Comment: Remember Lexington Green!
iD8DBQFGiyN6Iftj/pcSws0RAlKzAJ9bQOfZWE9KZeGZh+QLqwCYLtGF0wCfdAud
AzwXgHeRlvY7IJcu2BKpnOQ=heLa
-----END PGP SIGNATURE-----
Reply by ●July 4, 20072007-07-04
Hi again
Brain Thanks for your reply.
About your point about MP/MC#.
My board is correctly starting up. I am also running a relatively complex program and debugging it through emulator. Therefore, I think at this time setting of MP/MC# pin is not problem (It is set to zero.)
Moreover, at this time at first I want to program the flash, so define it in data space between 0x8000 and 0xFFFF.
I will be thankful if state your opinion.
Best Regards,
- Farhad
Brian Lane wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
h...@yahoo.com wrote:
> All, hi
>
> I design a relatively simple board consisting of a TMS320VC5416, a Flash memory, and a FPGA.
>
> I use the Flash to place my code.
>
> To program the flash, I declare it external in data space (DROM = 0). I connect the data and address buses directly from DSP to the Flash memory. Further, I make OE, WE, and CE signals of the Flash using MSTRB#, DS# and R/W# signals of DSP.
>
> The MSTRB#, DS# and R/W# signals of DSP active, however, I don't see any change on data and address buses of DSP.
> I also write a simple program to examine I/O signals of DSP. Strangle not only address and data bus are inactive, But IS# and IOSTRB# are also inactive.
>
> I will be thankful if state your opinions.
>
Its been a bit since I touched a DSP, but I think you also need to have
the MP/MC line pulled the correct direction in order to boot from the
flash.
You might take a look at the bootloader app note for the C54XX family,
it covers all the different boot sources and how to make sure the
correct one is selected.
Brian
- --
- ---[Office 73.2F]--[Outside 62.6F]--[Server 91.4F]--[Coaster 73.5F]---
- ---[ WENATCHEE WSF (366749710) @ 47 36.9426 -122 22.4449 ]---
Software, Linux, Microcontrollers http://www.brianlane.com
AIS Parser SDK http://www.aisparser.com
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (Darwin)
Comment: Remember Lexington Green!
iD8DBQFGiyN6Iftj/pcSws0RAlKzAJ9bQOfZWE9KZeGZh+QLqwCYLtGF0wCfdAud
AzwXgHeRlvY7IJcu2BKpnOQ=heLa
-----END PGP SIGNATURE-----
---------------------------------
Got a little couch potato?
Check out fun summer activities for kids.
Brain Thanks for your reply.
About your point about MP/MC#.
My board is correctly starting up. I am also running a relatively complex program and debugging it through emulator. Therefore, I think at this time setting of MP/MC# pin is not problem (It is set to zero.)
Moreover, at this time at first I want to program the flash, so define it in data space between 0x8000 and 0xFFFF.
I will be thankful if state your opinion.
Best Regards,
- Farhad
Brian Lane wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
h...@yahoo.com wrote:
> All, hi
>
> I design a relatively simple board consisting of a TMS320VC5416, a Flash memory, and a FPGA.
>
> I use the Flash to place my code.
>
> To program the flash, I declare it external in data space (DROM = 0). I connect the data and address buses directly from DSP to the Flash memory. Further, I make OE, WE, and CE signals of the Flash using MSTRB#, DS# and R/W# signals of DSP.
>
> The MSTRB#, DS# and R/W# signals of DSP active, however, I don't see any change on data and address buses of DSP.
> I also write a simple program to examine I/O signals of DSP. Strangle not only address and data bus are inactive, But IS# and IOSTRB# are also inactive.
>
> I will be thankful if state your opinions.
>
Its been a bit since I touched a DSP, but I think you also need to have
the MP/MC line pulled the correct direction in order to boot from the
flash.
You might take a look at the bootloader app note for the C54XX family,
it covers all the different boot sources and how to make sure the
correct one is selected.
Brian
- --
- ---[Office 73.2F]--[Outside 62.6F]--[Server 91.4F]--[Coaster 73.5F]---
- ---[ WENATCHEE WSF (366749710) @ 47 36.9426 -122 22.4449 ]---
Software, Linux, Microcontrollers http://www.brianlane.com
AIS Parser SDK http://www.aisparser.com
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (Darwin)
Comment: Remember Lexington Green!
iD8DBQFGiyN6Iftj/pcSws0RAlKzAJ9bQOfZWE9KZeGZh+QLqwCYLtGF0wCfdAud
AzwXgHeRlvY7IJcu2BKpnOQ=heLa
-----END PGP SIGNATURE-----
---------------------------------
Got a little couch potato?
Check out fun summer activities for kids.
