Replacing the PassThru in code in I2C EEPROM with user code {56720 EVM}

Started by pdj...@blueyonder.co.uk in Freescale DSPs9 years ago 1 reply

Hi Guys I've written and tested my DSP assy code on the 56720 EVM Dev board. Does anyone have any pointer to documentation that will show...

Hi Guys I've written and tested my DSP assy code on the 56720 EVM Dev board. Does anyone have any pointer to documentation that will show me how to overwrite the PassThru code on the EEPROMS, with my own code, to make my Dev board run my program in stand alone mode? Thanks Pete J


Studio Eclipse wrong values below 255

Started by pdj...@blueyonder.co.uk in Freescale DSPs10 years ago 2 replies

Hi All I'm using Symphony Studio Eclipse 1.1.0 and having problems setting values (but only if they are below 255). It seems to left shift the...

Hi All I'm using Symphony Studio Eclipse 1.1.0 and having problems setting values (but only if they are below 255). It seems to left shift the value by two bytes. i.e. Fred equ $70 or move #$70,x1 when used, comes out as $700000 when read from the chips ram or chips registers. Even Fred equ $000070 comes out as $700000. Anything above $ff works as you would exp...


Nubbie DSPAUDIOEVM 56720 Pass Through distortion

Started by pdj...@blueyonder.co.uk in Freescale DSPs10 years ago 15 replies

Hi Guys I've just purchased the DSPX72YDBZE and DSPAUDIOEVMMB1E. I've tried the Audio Pass Through Demo linking up as per...

Hi Guys I've just purchased the DSPX72YDBZE and DSPAUDIOEVMMB1E. I've tried the Audio Pass Through Demo linking up as per DSP56720BUG.pdf I just get a distorted sound on the analogue output that is loosely based on the Analogue input signal. I can get a perfectly clean signal out if I change the OSC SEL links to EXT instead of INT and INT and add link AUX1 on JP11 (Which changes the S...


56858 second stage serial bootloader

Started by ian...@glensound.co.uk in Freescale DSPs10 years ago

Hello, I have been trying to get the second stage SPI serial bootloader to work on the DSP56858EVM using the example from Precessor...

Hello, I have been trying to get the second stage SPI serial bootloader to work on the DSP56858EVM using the example from Precessor Expert. After much hair pulling it looks as if the second stage bootloader is loaded and runs but fails to load my application code. The SecondStageSPIBootLoader.pdf document says that the application code should be in s-record format at 0x1C00 in the flash. ...


Re: Re: Nubbie DSPAUDIOEVM 56720 Pass Through distortion

Started by Johnny Chen in Freescale DSPs10 years ago 3 replies

Hi Christian, I have verified passthru_720_upt.cmd with 720passthru_FTF_20070619 package on 720A EVM board. It does has output even I send...

Hi Christian, I have verified passthru_720_upt.cmd with 720passthru_FTF_20070619 package on 720A EVM board. It does has output even I send command stepwise in GDS cmd window. Please note for this version, jumpers of JP1 on the daughter board should be all closed. JP8: DEBUG Port closed JP4: all "4114" are closed, others open JP10: all closed Daughter card: JP15: two INT closed ? JP1...


Re: Maths in assembly language.

Started by pate...@yahoo.com in Freescale DSPs10 years ago 1 reply

Hey, Can anyone still explain how to divide two integers (not necessarily by a power of 2)? Mishal > > > > Hi Rob, > >...

Hey, Can anyone still explain how to divide two integers (not necessarily by a power of 2)? Mishal > > > > Hi Rob, > > check DSP56800 Family's manual chapter 3.3.5.2 Integer Multiplication. > There you will find that any multiplication is done in fractional > format. To convert it back to integer you have to do following: > > MPY X0,Y0,A ; Generates correct answer shif


Symphony Soundbite Examples

Started by thed...@yahoo.com in Freescale DSPs10 years ago 3 replies

Well, I recently bought a Symphony Soundbite Development kit (DSP56371), and downloaded the Symphony Studio Software to program it. So far I've...

Well, I recently bought a Symphony Soundbite Development kit (DSP56371), and downloaded the Symphony Studio Software to program it. So far I've found two example programs. One is an extremely simple program that demonstrates importing and building projects, which is extremely trivial. The other I downloaded from Freescale's website on the development kit, which is called Eight-channel-C-templat...


LP filter using demo assembly app for SYMPHONY SOUNDBITE

Started by Diesel in Freescale DSPs10 years ago 3 replies

Hello, I'm using a Symphony Soundbite development board. (dsp56371) I'm using the assembly sourcecode, you can find on the...

Hello, I'm using a Symphony Soundbite development board. (dsp56371) I'm using the assembly sourcecode, you can find on the Freescale website. I'm trying to make a simple Low Pass filter. (just 4th order; and only 1 left channel) But it is not working properly. I get a very thick sine wave at the output. There seems to be some kind of LP filtering; but not that correct, I think. ...


Re: Symphony Studio

Started by carr...@hotmail.com in Freescale DSPs10 years ago

I keep getting this error in the debug mode of Symphony Studio, "source file not found." I read a tutorial that had a troubleshooting section...

I keep getting this error in the debug mode of Symphony Studio, "source file not found." I read a tutorial that had a troubleshooting section that explains how to fix it. I followed their directions, which don't seem to make that much sense, and I've tried creating new path mappings and varied it countless times to no avail. There are two fields in the path mapping specification, "Compilati...


Soundbite (DSP56371) and 192kHz sampling

Started by "petr.sh111" in Freescale DSPs10 years ago 6 replies

Hi, I have bought recently a Symphony Soundbite Development kit. It has onboard DSP56371, AK4584 as the I2S clock master and ADC/DACs...

Hi, I have bought recently a Symphony Soundbite Development kit. It has onboard DSP56371, AK4584 as the I2S clock master and ADC/DACs AK4556. I need 192kHz sampling rate for the analog audio inputs. I have used Freescale's sample C-application that enables passthrough for all channels. It works fine at 48, 64, 96 kHz sampling frequencies. I have problems enabling 192kHz: I can see the input 1k...


Ask a Question to the DSPRelated community

To significantly increase your chances of receiving answers, please make sure to:

  1. Use a meaningful title
  2. Express your question clearly and well
  3. Do not use this forum to promote your product, service or business
  4. Write in clear, grammatical, correctly-spelled language
  5. Do not post content that violates a copyright