AW: 56F807 DSP failures

Started by Bende Georg in Freescale DSPs15 years ago 2 replies

Nachricht Yes, I have the same effect. The voltage is about 0,15V and I get values around 32000 in the ADC register. Seems...

Nachricht Yes, I have the same effect. The voltage is about 0,15V and I get values around 32000 in the ADC register. Seems this isn't the bevhaviou


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...


DSP56F805 Synchronous sampling twice per PWM period

Started by Mstr in Freescale DSPs13 years ago 1 reply

Hello, I've got a sensorless BLDC motor control application on a DSP56F805. I'm sampling the entire ADC bank, including phase currents and...

Hello, I've got a sensorless BLDC motor control application on a DSP56F805. I'm sampling the entire ADC bank, including phase currents and voltages, at the trough of the PWM carrier (center aligned PWM) in order to measure average current. I'm using a minimum-ripple PWM scheme in which the top switch turns off and the current circulates around GND for part of the PWM cycle. For better ...


56F800DEMO problem with FIR Filter

Started by los_...@yahoo.com.ar in Freescale DSPs13 years ago

Hi, I'm Mateo We are Trying to implement a FIR Filter with a 56F800DEMO Board, outputing the signal via PWM, in audio band. The timer C2 is...

Hi, I'm Mateo We are Trying to implement a FIR Filter with a 56F800DEMO Board, outputing the signal via PWM, in audio band. The timer C2 is set for 8Khz, so the ADC is sampling with that clock base. The PWM is set for reload every cycle and its Frequency is also 8KHz. No matter the taps setting, we always have at the PWM output, some sort of impulse response "drived" by the input signal. ...


DSP563xx ESAI and DMA

Started by Alexander Trica in Freescale DSPs14 years ago 2 replies

Hi @ all, I have a question concerning the ESAI data transfer using a DMA channel. I configured the DMA0 channel to transfer the ESAI...

Hi @ all, I have a question concerning the ESAI data transfer using a DMA channel. I configured the DMA0 channel to transfer the ESAI data (ADC data, i2s mode) from the RX0 register to the X memory space. Since there is no other DMA trigger source I am using the mode 01011 as DMA request source which is "ESAI receive data" (RDF=1). For


Mysterious ADC problem ! (DSP56f807)

Started by V A in Freescale DSPs16 years ago 1 reply

Hi Everybody :) I am new to the motoroladsp yahoogroup.  

Hi Everybody :) I am new to the motoroladsp yahoogroup.