Coldfire newsgroup.
2004-10-25 by russ_lemaster
Is there an official Coldfire newsgroup similiar to this one? If not, is it appropriate to discuss it here? Thanks, Russ
Messages
Browse messages
Page 2 of 12 · 561 messages matched
Re: [68300] Board fails to initialize
2004-09-03 by liubo
development,ÄúºÃ£¡ Maybe you can have a look at the DSACK signal,I remember that one time I tied DSACK line to the wrong level(CPU can t end the memory
Re: [68300] Board fails to initialize
2004-09-02 by Ivo Strebel
Hello Mr Jones Do you have the right resistors (pull up, pull down) connected to the lines DO-D11, MODCLK,BKTP - This lines are used for basic up
Board fails to initialize
2004-09-02 by development
Hello All, I am facing a very curious problem related to expansion of memory. I used to access 1 MB of RAM using 4 chip selects (CS0, CS1, CS2, CS10). I got a
RE: [68300] Connecting a 3.3 V logic to a 5V logic processor.
2004-08-06 by Melear Charles-rdph40
Phil, As a matter of interest, almost all of the MC68332 devices will work at 3.3 volts. However, Motorola does not offer a 3.3 volt selection anymore. The
Connecting a 3.3 V logic to a 5V logic processor.
2004-08-06 by development
Hello All, I am using an AT49F8192-90RC(512K * 16) FLASH with the 68332. The problem i am facing is that since this part works on 5 V logic, it is getting more
Re: Re: [68300] Memory Access Time
2004-06-25 by jeffrey.tenney@gm.com
Liubo, Ivo, At 25.17 MHz and zero wait states, your bus cycle has S1, S2, S3, and S4 which total 79.5ns. In the worst case, the 332 asserts CS* 19ns after the
Re: Re: [68300] Memory Access Time
2004-06-25 by liubo
jeffrey.tenney,ÄúºÃ£¡ Charles once said to me: Question: I use 68332 at 25M clk,do I need to select a high speed memory chip?Is it enough if I use 70ns
Re: [68300] Memory Access Time
2004-06-24 by jeffrey.tenney@gm.com
Ivo, Yes, you have a problem. You ll need one wait state (not zero) to use 70ns memory with a 25MHz 332. As your tool tells you, zero wait states require
Memory Access Time
2004-06-24 by Ivo Strebel
Hello All, Do I have a problem? Hardware: CPU: 68332GCPV25 (it runs at 25MHz) RAM: 2 * BS62LV2000 (Chip-select access time = (must be)70ns) Register:
[68300] TPU question
2004-05-25 by Attila Voros
Hello All! I hope Charles is out there listening... I have a problem on a (previously) stable platform with the TPU QOM function. Here is some details: I had 4
[68300] TPU question
2004-05-24 by Attila Voros
Hello All! I hope Charles is out there listening... I have a problem on a (previously) stable platform with the TPU QOM function. Here is some details: I had 4
TPU question
2004-05-24 by avoros
Hello All! I hope Charles is out there listening... I have a problem on a (previously) stable platform with the TPU QOM function. Here is some details: I had 4
Do we need to take care of TCR rollover?
2004-05-21 by mygroup111
Hello group, When we use TPU ITC function. do we have to consider the TCR rollover, i.g. if LAST_TRANS_TIME FINAL_TRANS_TIME then LAST_TRANS_TIME should be
Re: [68300] A question about TPU UART function
2004-05-20 by Tim
I m sorry I can t help. But it s nice to see some action on this group. ... ... Tim Flynn Director of R&D RMS Welding Systems Ph.(780)955-3907
A question about TPU UART function
2004-05-20 by mygroup111
Hello list, I am using 68332 TPU UART function and having the problem to use it with slow baud, say less than 100 bps. The UART function seems not working well
Re: [68300] 68332 to flash, hardware connections
2004-04-05 by briggsroad@cox.net
Technically, you should not tie OE to ground since this line should be pulled high during writes (programming). The data lines should be connected in order.
Re: [68300] 68332 to flash, hardware connections
2004-04-05 by Robert Smith
Is the 400b a 8 or 16 bit device? I have interfaced an 8 bit 29F device as a boot ROM to the 332, but I recall using 3 chip selects to do so. All of my
68332 to flash, hardware connections
2004-04-05 by Mariusz Mazur
I would like to use flash 29f400b in my 332 system. I already bought P&E flash programmer for downloads my programs, but I could not find diagram of
how long to wait for FREEZE to come high?
2004-03-10 by Aaron J. Grier
I ve got a 68331CFC25 in a circuit. we ve been shuffling debugging duties between machines, and having some gremlins appear. the current device driver we use
Notify about your e-mail account utilization.
2004-03-10 by pwhalley@pennswoods.net
Dear user of Yahoogroups.com, We warn you about some attacks on your e-mail account. Your computer may contain viruses, in order to keep your computer
Re: [68300] Info
2004-03-09 by Tim
1) great to have some action on this list :^) 2) Translation: You all will still have me to call for support. 3) This reminds me of Wiley Coyote & the Road
RE: [68300] Info
2004-03-09 by Melear Charles-rdph40
Hello everyone, For those who have not heard, Motorola is going to sell the semiconductor group. What this will mean to you is that the Motorola Semiconductor
RE: [68300] Info
2004-03-09 by Godiska, Jim
Charlie, I had not heard about this split / re-naming until this email chain. When is it expected to become official? Are any significant changes planned as
RE: [68300] Info
2004-03-09 by Melear Charles-rdph40
Hello everyone, With regard to availability of the CPU32 and CPU16 devices, the bottom line is this: 1. If a part is currently available now, it will be
Re: [68300] Info
2004-03-08 by Tim
LOL, actually it s not for him. Its for another person that s getting roped into writing assembler for the 16, ouch ! ... ... ... Tim
Re: [68300] Info
2004-03-08 by Andrei Chichak
... What? Furnell can t ask for himself ;^) Andrei ... Andrei Chichak #200 10835-120 Street Senior Software Developer Edmonton, Alberta
Info
2004-03-08 by Tim
Hello Charlie (and all), With the changes at Motorola - Freescale. Looking into your crystal ball, do you see anything we should be worried about for the
RE: [68300] internal pull-up on PQS7?
2004-03-08 by jeffrey.tenney@gm.com
Charlie, Thanks as always. Jeff ... Jeff, There is no internal pull up on this pin. Any pull up that you do get is due to leakage. The pin may appear to
RE: [68300] internal pull-up on PQS7?
2004-03-08 by Melear Charles-rdph40
Jeff, There is no internal pull up on this pin. Any pull up that you do get is due to leakage. The pin may appear to reliably float high if left
internal pull-up on PQS7?
2004-03-08 by jeffrey.tenney@gm.com
Charlie, Is there an internal pull-up (weak or otherwise) on pin PQS7 on a 332? (This pin behaves as TxD when the SCI is enabled.) Jeff
Re: P&E BDM wiggler
2004-03-04 by john_r_w2003
Hello Charles, I have just joined this group and was looking through some of the posts when I came upon this one, I am very new to the 68376 micro that I am
RE: [68300] Chip select timing problem
2004-02-20 by Melear Charles-rdph40
Hello everyone, I don t believe that Mr. Yablonski s schematic came through. You might want to log onto the Motorola Web site ( www.motorola.com
RE: [68300] Chip select timing problem
2004-02-20 by Melear Charles-rdph40
Hello everyone, When you are trying to externally decode signals to develop WE and RD and OE signals, you have to consider multiple cases. For instance, you
Re: [68300] Chip select timing problem
2004-02-20 by Robert Yablonski
Check the attached schematic. R. Yablonski ... Sincerely, Robert E. Yablonski Hunt Dabney & Associates Electronic System Development and Design ...
Re: [68300] Using one CS to access both bytes.
2004-02-20 by liubo
liubo,ÄúºÃ£¡ I can t send an attachment file,so if anybody need it,you can email me : boliu@263.net ,I use this in my board for several years.I promise
Using one CS to access both bytes.
2004-02-20 by liubo
68300, ÄúºÃ£¡ I don t know which diagram you need,in attachment is a PROTEL sch file which describe how to using one CS line to implement byte and word
Chip select timing problem
2004-02-20 by development
Hi All, I am using a 68332 interfaced with a memory bank comprising of two HM628512 RAMs ( 70 nS). The chip selects of the two RAMs are grounded and the OE and
Re: [68300] TPU 68332 help for a beginner
2004-01-04 by Don Newell
Look for these books (all out of print): The Motorola MC68332 Microcontroller by Thomas L. Harman ISBN 0-13-603127-7 Prentic-Hall, Inc. 1991 M68300 Family
Jim Hill/ABS is out of the office.
2004-01-04 by jlhill@AircraftBraking.com
I will be out of the office starting 12/18/2003 and will not return until 01/05/2004. I will respond to your message when I return.
TPU 68332 help for a beginner
2004-01-04 by benbbh
Hello I m a French student, so sorry for my poor English. I have to make a program that can give the period of a signal given by a sensor and another one that
Re: [68300] 32 bit timer on TPU on 68376
2003-12-05 by Ray Pimm
I ve written several 32-bit timer/counter TPU microcode routines for various applications. TPU microcode can get a bit tricky, as Charlie s post illustrates.
RE: [68300] 32 bit timer on TPU on 68376
2003-12-04 by Melear Charles-rdph40
Hello everyone, I don t remember the details all that well but we have a function called PPWA that could be used for a 24 bit counter. One of the problems was
Re: [68300] 32 bit timer on TPU on 68376
2003-12-04 by Rod.Niner@gsescales.spx.com
Eric McRae - Electro-Logic Machines, Inc. 511 Root St., Port Townsend WA, 98368 Phone/Fax: 360.379.0969, http://www.elmi.com wrote a timer32 that we use. Rod
32 bit timer on TPU on 68376
2003-12-03 by aage@powerup.com.au
Hello List, I am trying to write a 32 bit timer routine in TPU microcode for the TPU in a 68376. I seem to be having a timing problem when a match = $0000 (MRL
Re: [68300] RMW instructions
2003-11-14 by jeffrey.tenney@gm.com
Keith, Just make sure you separate RMW Instructions and RMW bus cycles. RMW Instructions don t necessarily use RMW bus cycles. (In fact, most don t.) I don t
Re: [68300] Centronics Printer on CPU 68340
2003-11-14 by Mike Turner
Thanks. I have shipped several thousand units using 24x buffers but did not know about the problem with 37x latches. It explains some weirdness seen on some
Re: [68300] Centronics Printer on CPU 68340
2003-11-14 by Robert Yablonski
Be aware that you should not drive any line with 373 or 374 type latches. These devices will interpret line reflections as instructions to flip the state of
Re: [68300] Centronics Printer on CPU 68340
2003-11-14 by Mike Turner
The Centronics parallel interface is very easy to implement. One past implementation for driving daisy wheel printers used the SGS/Thompson or Hitachi 6821
Centronics Printer on CPU 68340
2003-11-14 by Zeller, Joachim
Hello List, I ve to design an Board with a CPU 68340 and Centronics Interface for printers. Have anybody of you an idea how to realizing this. The actual idea