SDK default CPU clock rate, DSP56F80x

Started by Roger Flor in Freescale DSPs17 years ago 4 replies

Hello! I am using a DSP56F805 EVM. Page 3-47 of the Embedded SDK Targeting Motorola DSP56F80x Platform manual says that...

Hello! I am using a DSP56F805 EVM. Page 3-47 of the Embedded SDK Targeting Motorola DSP56F80x Platform manual says that the default SDK setting for the CPU clock is 72MHz. Is there any special reason for this? Why not 80MHz? Is there anything I should be aware of


DSP56F80x question about a pipeline dependency when disabling interrupts

Started by Art Johnson in Freescale DSPs15 years ago 4 replies

Hello, I have a question about whether or not there is a pipeline dependency when disabling interrupts in the DSP56F80x devices...

Hello, I have a question about whether or not there is a pipeline dependency when disabling interrupts in the DSP56F80x devices (we use the DSP56F807). Specifically, in the following instruction sequence: X_Ram_Test_Loop: // Disable interrupts during the following


JTAG for DSP56F803

Started by nepali_cool_man in Freescale DSPs15 years ago 1 reply

Hi, I have been looking for a jtag programming cable for the DSP56F80x, specifically 56F803 but am unable to find any...

Hi, I have been looking for a jtag programming cable for the DSP56F80x, specifically 56F803 but am unable to find any producers. Does anybody know of one available? I found one that might work with it at PE Microelectonics, but the programmer is really expensive, ~$200 US. I


Comparison

Started by Roelof Oelofsen in Freescale DSPs18 years ago 8 replies

Hi all, I am new to this newsgroup as well as to DSP in general. Can you guys that have all the experience give me a comparison...

Hi all, I am new to this newsgroup as well as to DSP in general. Can you guys that have all the experience give me a comparison between the Motorola DSP56F80x and similar DSP's (40MIPS, 16bit fixed point) from TI and AD? Thanks in advance... Regards


LCD control

Started by Roger Flor in Freescale DSPs17 years ago

Hello! Has anybody here tried controlling a LCD display using a DSP56F80x? I am referring to a LCD without a controller (i.e...

Hello! Has anybody here tried controlling a LCD display using a DSP56F80x? I am referring to a LCD without a controller (i.e you have to provide the CL1 (line strobe),CL2(data shift) ,FLM(frame) signals). Thanks in advance Roger


AN1927

Started by Maria in Freescale DSPs16 years ago 1 reply

Hi all! Help me, please Where can I find application AN1927 "DSP56F80x MC PWM Module in Motor Control Applications" pdf format? ...

Hi all! Help me, please Where can I find application AN1927 "DSP56F80x MC PWM Module in Motor Control Applications" pdf format? Thanks. Maria


Ethernet Connection

Started by franklloydhoffman in Freescale DSPs18 years ago 1 reply

Just Joined the Group. Is there any recommended Ethernet Hardware that can be used with the DSP56F80x, DSP56F82x family of...

Just Joined the Group. Is there any recommended Ethernet Hardware that can be used with the DSP56F80x, DSP56F82x family of processors. I understand that there is a TCP/IP stack available in the SDK. TIA, Frank Hoffman Leviton Lighting Control Systems


Port A on the DSP56F80x

Started by Roger Flor in Freescale DSPs17 years ago 1 reply

Hello! I am using a DSP56F805. 1. If I write data to a peripheral(say an LCD controller) using the external data bus,...

Hello! I am using a DSP56F805. 1. If I write data to a peripheral(say an LCD controller) using the external data bus, will I be able to override the address bus and use some of the multiplexed GPIO's(GPIOE2, GPIOE3, and GPIOA0 to GPIOA7)? 2. Upon exi


AW: Re: Measuring PWM with DSP56F80x

Started by Bende Georg in Freescale DSPs16 years ago

Thanks for your comments, at least I'm now sure that it's not my English that isn't enough to understand the Manual. :) What I've...

Thanks for your comments, at least I'm now sure that it's not my English that isn't enough to understand the Manual. :) What I've discovered, that I can't use the same input pin once inverted and once with true polarity. The manual states that "14.7.2.7 Input Polarity Select (IP


Measuring PWM with DSP56F80x

Started by Bende Georg in Freescale DSPs16 years ago 2 replies

Hello all, I'm trying to measure the duty percentage of a PWM signal in the range of 200Hz-2KHz. I configured 2 timer...

Hello all, I'm trying to measure the duty percentage of a PWM signal in the range of 200Hz-2KHz. I configured 2 timer channels in the following way: /*. Quad Timer A0 configuration ---------------------------- Count mode: Edge of 2nd source triggers pr


Re: motoroladsp] Protecting Flash memory on DSP56F80x devices

Started by David D in Freescale DSPs18 years ago

Taking Roelof Oelofsen's suggestion a little further, one could pin out the JTAG/OnCE connector differently and using a different...

Taking Roelof Oelofsen's suggestion a little further, one could pin out the JTAG/OnCE connector differently and using a different connector than what Motorola uses. Additionally, a 0 Ohm resistor that ties TRST to RESET on your production boards would prevent a rogue using the


DSP56F80X and JTAG

Started by Mark B in Freescale DSPs16 years ago

I am currently using Codewarrior to program the DSP through it's JTAG port and it doesn't generate a checksum when a file is...

I am currently using Codewarrior to program the DSP through it's JTAG port and it doesn't generate a checksum when a file is loaded through the JTAG port. I am looking for something out there that actually has a checksum generator integrated into the JTAG programming software.


Where can I find 56f83xx's struct s_io file

Started by cwmkd in Freescale DSPs12 years ago

Hi all, I'm migrating from DSP56F80x family to MC56F83xx. In 80x family, I used to use struct s_io to access hardware, for example...

Hi all, I'm migrating from DSP56F80x family to MC56F83xx. In 80x family, I used to use struct s_io to access hardware, for example io.timra0.ctrl. In 83xx family, is there a file similar to dsp56f807_io.h? Thanks cwmkd


ADC public interface

Started by Roger Flor in Freescale DSPs17 years ago 1 reply

I have been trying to use the SDK. I am trying to run the ADC Section 5.4.3 (ADC API Definition) of the SDK Documentation...

I have been trying to use the SDK. I am trying to run the ADC Section 5.4.3 (ADC API Definition) of the SDK Documentation (DSP56F80x Platform) contains this: "Public Data Structure(s) typedef struct { adc_eAnalogChannel AnalogChannel; adc_tSample


Programming DSP56F80x through JTAG (was: Create a S-Record File for Data Flash???)

Started by Daniel Malik in Freescale DSPs18 years ago

Hi, > In AN1926 page 6 There is written that SDK 2.4 will include an > Windows-Application to program DSP via JTAG port. > I...

Hi, > In AN1926 page 6 There is written that SDK 2.4 will include an > Windows-Application to program DSP via JTAG port. > I did not find any application. > Should I clean my glasses or is there no application? The application is still in development.


Protecting Flash memory on DSP56F80x devices

Started by chet_kaufman in Freescale DSPs18 years ago 9 replies

I have heard that there is a way to protect the flash on the DSP56F8xx devices by overvoltaging the TDO line on the JTAG port. ...

I have heard that there is a way to protect the flash on the DSP56F8xx devices by overvoltaging the TDO line on the JTAG port. This would keep any information from being pulled out of the device via the JTAG interface. If there was no other loading mechanism in the bootloader flash,


MSCAN useful information

Started by Art Johnson in Freescale DSPs17 years ago

The following Application Notes and FAQs have some highly useful information for anyone writing code for the MSCAN (Motorola...

The following Application Notes and FAQs have some highly useful information for anyone writing code for the MSCAN (Motorola Scalable Controller Area Network) module. Although they were written for other devices, most of this information does apply to the DSP56F80x MSCAN module, espe


Instruction Set Opcode Map?

Started by c91935 in Freescale DSPs16 years ago 1 reply

Hi, Am using Pete Gray's SmallC package assembler. We are programming only in assembly language for a DSP56F803. Does anyone know...

Hi, Am using Pete Gray's SmallC package assembler. We are programming only in assembly language for a DSP56F803. Does anyone know where an Instruction Set Opcode Map can be found for DSP56F80x assembly language? Thank you.


DSP56F80x Pwm port directly drive Leds or optocoupler?

Started by hao yuan in Freescale DSPs17 years ago

Hi everybody, May I use the pwm port with resistors drive the leds and/or optocouplers directly? I mean without any buffers...

Hi everybody, May I use the pwm port with resistors drive the leds and/or optocouplers directly? I mean without any buffers as 74ls06 or 74ls07. The max current of pwm is 20ma and we can confine the currents 10ma. Is that ok? or will it do any harm to the whole DSP


RE: [motoroladsp_unmoderated] ADC conversion

Started by Art Johnson in Freescale DSPs17 years ago

Motorola has 3 excellent Application Notes about the ADCs: AN1933/D "Synchronizing of On-Chip Analog to Digital Converter on...

Motorola has 3 excellent Application Notes about the ADCs: AN1933/D "Synchronizing of On-Chip Analog to Digital Converter on DSP56F80x DSPs" AN1940/D "Mapping ADC Control Registers to the SDK API" AN1947/D "DSP56800 ADC" AN1940/D has quite a