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Any timing problem of using LCX16245 to drive the Data and address pins of 56805 ??   [8 Articles]

Hi all. When building my own 56805 board, I would add two LCX16245 to drive the 56805's address and data signals, will these cause any problem to the external bus...

Interrupts (masking them all) - 56805   [9 Articles]

I am trying to understand the data that is in the books concerning interrupts on the 56805. I am trying to disable all (software/hardware) interrupts by modif...

PRAM segment. What is it ?   [4 Articles]

Is about from two years that I'm using 56805 microcontroller and I don't know yet what PRAM segment is. Can anyone explan me ? Thanks ...

Program xFlash & interrupt problem   [3 Articles]

Does anyone know if is necessary to disable all interrupt ISR when programming or erasing xFlash data ? I'm using 56805 microcontroller in single chip mode. Thank...

bit-wise shift operator problem   [2 Articles]

56805 DSP and I am trying to shift 16 places to the left into an unsigned long (32-bit size). unsigned long big_value = 0; big_value = 1 << 16; big_value is...

SCI with two stop bits, is possible ?   [2 Articles]

I'm using 56805, and I'm trying to set the SCI with two stop bits. As mentioned in table 12.2 of family manual it seems possible but is doesn't work! Does anyone ha...

question about compare registers

hi, everybody I have a question about compare registers. The dsp 56805 has two compare registers. How to use these two registers at same time? The dual Compare re...

Looking for a DSP56F805 EVM for senior design project

I am an EE student and I'm trying to get ahold of an evaluation board for the 56805 DSP processor to use for my senior design project. The motorola website lists th...

Boot sector size in 56805   [2 Articles]

Actualy the boot sector is 2Kword size. If my boot loader program is more than 2Kword, can I use normal PFlash ? This obviusly reduce the application size, but Is b...

move to X memory   [3 Articles]

Please, read this simple code: asm{ move #$0800,r0 move #$5555,y0 move y0,X:(r0) nop } I have inserted this code in a new proyect for 56807, created...

unknown memory locations?   [2 Articles]

I am going trough the FSTART.C code To understand what it takes to set up the Processor for a C program. FSTART.C #define TCR01 0xFFDF #defin...

help needed in setting the sampling frequency

Hi, iam simply confused. i did read the datasheets and have understood the following. from the datasheet ,and from the register ADCR2 which gives u the cl...

Stationery problem when creating a project with codewarrior 5.0

I have just started working with the DSP56F805EVM development board with Codewarrior 5.0 and Embedded SDK 3.0. I've used some of the examples to download to the ...

RE: Problem with SPI in DSP 56F807.

Hi Iker Yes, I saw the same thing. I don't recall what exactly, really, fixed it, but I thrashed around for ages. I did not use the SDK. I used the Rx Full IRQ for b...

Normal, Fast and Super Fast interrupt on 56805

Hi, I want to speed up the response of my interrupt on the input 1 of timerA and after reading the Embedded SDK Programmer's Guide I'm still confuse on h...

Writing MSCAN CANE bit (56805)   [2 Articles]

Hi, in manual there is written following about CANTCL1 register bits (ch. 8.8.2 of 5680x User's manual): "These bits are read/write at any time when SFTRES ...

RE: Protecting Flash memory on DSP56F80x devices   [2 Articles]

Ok, but does anyone have a good idea to protect flash program. I work in single chip mode with a 56805 and I could spend about $0.5 for additional components. Fo...

Rif: RE: SCI with two stop bits, is possible ?

Ok but after my test I can declare that is possible only receive data and not tx data (with two stop bits). Do you agree ? "Johnson, Jerry...

Rif: RE: Program xFlash & interrupt problem

Very interest discussion. Fortunately for this application I can disable all interrupts during flash erase&write (disabled for 40msec!!!!! during page erase) . B...