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Started by Appalayagari Sreedhar ●February 18, 2004
Hi Everybody,
 
I am Sreedhar, i am a new member of this group. I am reading sharc 21266 hardware reference manual.
 
I am reading serial ports chapter. In the data word format section.
 
it is given as when DIFS = 1 and SPTRAN = 1
If a Frame sync occurs when a transmitter FIFO is empty, the MSB or the LSB of the previous word is transmitted.
 
Does this activity cause any wastage of space.
 
regards,
Sreedhar

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Reply by Mike Rosing ●February 18, 20042004-02-18
On Wed, 18 Feb 2004, [iso-8859-1] Appalayagari Sreedhar wrote:

> I am Sreedhar, i am a new member of this group. I am reading sharc 21266
hardware reference manual.
>
> I am reading serial ports chapter. In the data word format section.
>
> it is given as when DIFS = 1 and SPTRAN = 1
> If a Frame sync occurs when a transmitter FIFO is empty, the MSB or the LSB of
the previous word is transmitted.
>
> Does this activity cause any wastage of space.

Hello Sreedhar,

In a way, yes - you'll be transmitting all 1's or all 0's depending on
which bit is chosen and what it was for that entire frame. That should be
ok though for most systems, there's no data being transmitted anyway.
But if things are critical, then keeping the FIFO full is probably
a really important task!

Patience, persistence, truth,
Dr. mike


Reply by ayyam perumal ●February 19, 20042004-02-19
Hi all,

i am right now try to establish communication between
samsung nand flash memory K9F5608U0B-YCB0 and adsp2186
processor..

i gave the commands as per the instruction of the data
sheet but i couldn't get busy signal at the time of
erase and also write process..its always driving
high(ready)..so the commands doesn't executed

but the same thing i can get the busy signal(active
low) for 10 micro second in read processing

also i can read the status register.(command write
accecepted)..so write and read timings are ok..

but i did one thing.at First i write the reset
command.is it make any problem??..

kindly do help in this regards..what may be the
problem for this??..

thanks in advance

with good regards
ayyams

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