• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 83 subscribers
  • Views 630 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMS320F2800132: TMS320F240PQA writing a backup into a new chip

Sven Onderbeke
Prodigy 15 points

Part Number: TMS320F2800132

Tool/software:

[Since a partnumber is required but TMS320F240PQA is not in the list I selected most similar being  TMS320F2800132]

I'm doing a repair of a PCB where the TMS320F240PQA is defect.

GOAL: I want to be able to download a backup I have into a new soldered chip. 

I already read quite some forum threads and learned the following:

  • It's a very old DSP chip, obsolete. It has no readout security
  • Reading can be done on a windows XP with CCS3.3 using a XDS510-USB2.0 TI DSP EMULATOR ( ran in a virtual machine ) by going 'File' -> 'Data' -> 'Save' and store from address 0x0000 a length of 0x8000 bytes in a coff format (.out) -> I have done this successfully
  • Writing can not be done with CCS 3.3 (correct me if I am wrong)
  • Writing can not be done with my XDS510-USB2.0 TI DSP EMULATOR (correct me if I am wrong)
  • Writing should be done with the DOS program Prg2xx
  • Writing can be done with the XDS510 ISA controller card connected to a Spectrum digital XDS510PP plus

I bought myself an old PC with win98 and an ISA slot. Inserted the card. In BIOS I reserved some IRQ's for ISA legacy devices. I attached the XDS510PP and fed it with 5V.

The XDS510PP plus is fysically connected to the PCB with the foreseen header. The board is powered. 

I run C:\specdig\prg2xx\f240\BTEST.bat and get "API Error 100" This readme file explains this error as "Target power detected, but scan path is not functional" 6011.README.PDF 

Unfortunately I get this same error when no adapter is attached so it doesn't confirm a correct connection to the XDS510PP plus.

Then there is this F240 file, both files tell me the internal clock should run at 20Mhz, there is a CLKOUT pin on this chip which I measured, for one device this is good (20Mhz) for another this is 8Mhz. I Attached a signal generator at CLKIN to bump the clockspeed at CLKOUT but it collapses at 18Mhz. There is some explanation on how to reconfigure the PLL for me its a contradiction: connecting to the chip requires 20mhz internal clock but reconfiguring the pll requires you to have a connection (to change the settings)?

VCCP is 5V and the chip is in MC mode (MP /MC pin LOW).

F240.TXT

In SDConfig using emulator test on '240' I get:

Also I would expect the 'Active' led on the XDS510PP plus to turn on but it is off.

Really hoping someone can help me out by clearing out some of the questions I have or pointing me to the fault I'm currently making SmileyFingers crossed

General Questions I have:

  • How do I need to set the DIP switches of this ISA card
  • How to install the XDS510 ISA card, do I need to install drivers?
  • How to get the chips internal clock to 20Mhz
  • When does the active led of the XDS510PP theoretically go on.
  • Is my setup currently able to communicate with the XDS510PP or not?