Jerry Avins wrote:
> Leon wrote:
> 
>   ...
> 
>> Radio amateurs, on the whole, are a tight-fisted lot. 8-)
> 
> Make that "Amateurs, on the whole, are a tight-fisted lot." I won't 
> grind another telescope mirror now that I can but one for less than the 
> cost of the blanks and abrasives. I did machine the cell for my 
> 6-diopter achromatic close-up attachment. (It allows me to use my new 
> digital SLR to digitize 35 mm slides by merely photographing them 
> effectively 1:1. I cut the metric thread with a gear* I made myself.)
> 
> Jerry
> _________________________
> * I cut two teeth out of a 26-tooth gear and closed the resulting gap. 
> 34 threads/inch is close enough to .75mm/thread as makes no difference.

Gaaah! I started with a 36-tooth gear, not 26.

For the curious, I cut out the hub, leaving an toothed ring with an 
appropriate inner diameter. A 24-pitch gear has 24 teeth for every inch 
of (pitch) diameter, and I made another hub 1/12" smaller than the 
ring's inner diameter. After sawing two teeth out of the annulus, I 
pulled it around the new hub with a hose clamp and brazed it in place. 
(A small gap ensured that the new hub determined the new size. To remove 
any possible errors, I ran the gear under pressure against a steel 
50-tooth gear with fine valve-grinding compound as "lubricant", then 
shifted it one tooth and lapped it some more. All that to save $300 
(plus tax) for a special order from the gear shop. I said I'm cheap.

Jerry
-- 
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������

Leon wrote:

   ...

> Radio amateurs, on the whole, are a tight-fisted lot. 8-)

Make that "Amateurs, on the whole, are a tight-fisted lot." I won't 
grind another telescope mirror now that I can but one for less than the 
cost of the blanks and abrasives. I did machine the cell for my 
6-diopter achromatic close-up attachment. (It allows me to use my new 
digital SLR to digitize 35 mm slides by merely photographing them 
effectively 1:1. I cut the metric thread with a gear* I made myself.)

Jerry
_________________________
* I cut two teeth out of a 26-tooth gear and closed the resulting gap. 
34 threads/inch is close enough to .75mm/thread as makes no difference.
-- 
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������

"Leon" <leon.heller@bulldoghome.com> wrote in 
news:1150456520.820311.204150@y41g2000cwy.googlegroups.com:

> 
> Al Clark wrote:
>> "Leon" <leon.heller@bulldoghome.com> wrote in
>> news:1150387411.434274.122720@h76g2000cwa.googlegroups.com:
>>
>> >
>> > Al Clark wrote:
>> >> "Leon" <leon.heller@bulldoghome.com> wrote in
>> >> news:1150366594.811674.145580 @p79g2000cwp.googlegroups.com:
>> >>
>> >> > I've just got a couple of samples of the new ADSP-21262 SHARC DSP
>> >> > (1200 MFLOPS!) in the LQFP package. It is a masked-ROM device, 
and
>> >> > I wondered if there was likely to be anything useful in the ROM.
>> >> >
>> >> > I've started designing a simple PCB so that I can play with them,
>> >> > it'll consist basically of  the '21626 and a suitable codec.
>> >> >
>> >> > Leon
>> >> >
>> >> >
>> >>
>> >> The 21262 has the potential for ROM (if you pay for a mask charge 
and
>> >> buy a gazillion). The 21266 is the same part with code in the ROM.
>> >> These are audio algorithms from Dolby, DTS, etc that must be 
licensed
>> >> accordingly.
>> >>
>> >> We sell many 21262 boards that you may want to look out before you 
do
>> >> your own. It will be much cheaper.
>> >>
>> >> You might want to take a look at the 21369 as well. This is the
>> >> latest third generation SHARC. We think it will be the dominant DSP
>> >> in our lineup by next year and the most popular for development 
this
>> >> year.
>> >
>> > Thanks, Al. I'd rather design my own as I have rather specific
>> > requirements for the final sytem - with a Cyclone II FPGA and
>> > high-speed USB interface, as small and cheap as possible, for 
amateur
>> > radio applications.
>> >
>> > Leon
>> >
>> >
>>
>> Having participated in the amateur radio market, I can appreciate the
>> cost side. As a hobby, ham radio is fine. I think it is a difficult
>> business to make money in. I co-founded Timewave, which still is 
active
>> in this market.
>>
>> We currently have a board with high speed USB & an ADSP-21369. We are
>> planning a dspblok 21369 with 64Mbit SDRAM & a Cyclone 2 for later 
this
>> year. The dspblok is 60mm x 60mm. This is fairly small when you look 
at
>> the size of the components.
> 
> 



> Al,
> 
> I've just noticed what appear to be typos on the data sheet - some of
> the pin names seem wrong. For instance, pin 80 is DAI_P13 (SCLK23).
> According to the Peripherals Manual there should be an SCLK for each
> SPORT. Or, is SCLK23 shared by SPORTs 2 and 3?
> 
> Leon
> 

The 21262 has 6 half duplex SPORTs. Each SPORT has a FS, SCLK, and two 
data lines going in the same direction. The DAI has twenty pins that can 
be assigned to any of the SPORT pins. The internal SPORT pins can be tied 
together. 

For example, we often tie multiple SCLKs and FSs together for 
multichannel systems. This uses two arbitrary DAI pins. 

The same thing is true of the 21369 except their are 8 SPORTs. 

The datasheet shows some alternate assignments that I think are 
confusing. We ignore them and set up the DAI explicitly for our desired 
I/O.

The DAI is a great feature of the 21262. It really simplifies routing. 
The idea has been expanded on the 21369 to include a similar interface 
call DPI. This interface handles SPI, UARTs, I2C, etc.




-- 
Al Clark
Danville Signal Processing, Inc.
--------------------------------------------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com

>> >
>>
>> Having participated in the amateur radio market, I can appreciate the
>> cost side. As a hobby, ham radio is fine. I think it is a difficult
>> business to make money in. I co-founded Timewave, which still is active
>> in this market.
>>
>> We currently have a board with high speed USB & an ADSP-21369. We are
>> planning a dspblok 21369 with 64Mbit SDRAM & a Cyclone 2 for later this
>> year. The dspblok is 60mm x 60mm. This is fairly small when you look at
>> the size of the components.


> 
> Radio amateurs, on the whole, are a tight-fisted lot. 8-)
> 
> Leon
> 

Copper wire was invented by two hams fighting over a penny;-)




-- 
Al Clark
Danville Signal Processing, Inc.
--------------------------------------------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com

Al Clark wrote:
> "Leon" <leon.heller@bulldoghome.com> wrote in
> news:1150387411.434274.122720@h76g2000cwa.googlegroups.com:
>
> >
> > Al Clark wrote:
> >> "Leon" <leon.heller@bulldoghome.com> wrote in
> >> news:1150366594.811674.145580 @p79g2000cwp.googlegroups.com:
> >>
> >> > I've just got a couple of samples of the new ADSP-21262 SHARC DSP
> >> > (1200 MFLOPS!) in the LQFP package. It is a masked-ROM device, and
> >> > I wondered if there was likely to be anything useful in the ROM.
> >> >
> >> > I've started designing a simple PCB so that I can play with them,
> >> > it'll consist basically of  the '21626 and a suitable codec.
> >> >
> >> > Leon
> >> >
> >> >
> >>
> >> The 21262 has the potential for ROM (if you pay for a mask charge and
> >> buy a gazillion). The 21266 is the same part with code in the ROM.
> >> These are audio algorithms from Dolby, DTS, etc that must be licensed
> >> accordingly.
> >>
> >> We sell many 21262 boards that you may want to look out before you do
> >> your own. It will be much cheaper.
> >>
> >> You might want to take a look at the 21369 as well. This is the
> >> latest third generation SHARC. We think it will be the dominant DSP
> >> in our lineup by next year and the most popular for development this
> >> year.
> >
> > Thanks, Al. I'd rather design my own as I have rather specific
> > requirements for the final sytem - with a Cyclone II FPGA and
> > high-speed USB interface, as small and cheap as possible, for amateur
> > radio applications.
> >
> > Leon
> >
> >
>
> Having participated in the amateur radio market, I can appreciate the
> cost side. As a hobby, ham radio is fine. I think it is a difficult
> business to make money in. I co-founded Timewave, which still is active
> in this market.
>
> We currently have a board with high speed USB & an ADSP-21369. We are
> planning a dspblok 21369 with 64Mbit SDRAM & a Cyclone 2 for later this
> year. The dspblok is 60mm x 60mm. This is fairly small when you look at
> the size of the components.


Al,

I've just noticed what appear to be typos on the data sheet - some of
the pin names seem wrong. For instance, pin 80 is DAI_P13 (SCLK23).
According to the Peripherals Manual there should be an SCLK for each
SPORT. Or, is SCLK23 shared by SPORTs 2 and 3?

Leon

Al Clark wrote:
> "Leon" <leon.heller@bulldoghome.com> wrote in
> news:1150387411.434274.122720@h76g2000cwa.googlegroups.com:
>
> >
> > Al Clark wrote:
> >> "Leon" <leon.heller@bulldoghome.com> wrote in
> >> news:1150366594.811674.145580 @p79g2000cwp.googlegroups.com:
> >>
> >> > I've just got a couple of samples of the new ADSP-21262 SHARC DSP
> >> > (1200 MFLOPS!) in the LQFP package. It is a masked-ROM device, and
> >> > I wondered if there was likely to be anything useful in the ROM.
> >> >
> >> > I've started designing a simple PCB so that I can play with them,
> >> > it'll consist basically of  the '21626 and a suitable codec.
> >> >
> >> > Leon
> >> >
> >> >
> >>
> >> The 21262 has the potential for ROM (if you pay for a mask charge and
> >> buy a gazillion). The 21266 is the same part with code in the ROM.
> >> These are audio algorithms from Dolby, DTS, etc that must be licensed
> >> accordingly.
> >>
> >> We sell many 21262 boards that you may want to look out before you do
> >> your own. It will be much cheaper.
> >>
> >> You might want to take a look at the 21369 as well. This is the
> >> latest third generation SHARC. We think it will be the dominant DSP
> >> in our lineup by next year and the most popular for development this
> >> year.
> >
> > Thanks, Al. I'd rather design my own as I have rather specific
> > requirements for the final sytem - with a Cyclone II FPGA and
> > high-speed USB interface, as small and cheap as possible, for amateur
> > radio applications.
> >
> > Leon
> >
> >
>
> Having participated in the amateur radio market, I can appreciate the
> cost side. As a hobby, ham radio is fine. I think it is a difficult
> business to make money in. I co-founded Timewave, which still is active
> in this market.
>
> We currently have a board with high speed USB & an ADSP-21369. We are
> planning a dspblok 21369 with 64Mbit SDRAM & a Cyclone 2 for later this
> year. The dspblok is 60mm x 60mm. This is fairly small when you look at
> the size of the components.

Radio amateurs, on the whole, are a tight-fisted lot. 8-)

Leon

"Leon" <leon.heller@bulldoghome.com> wrote in
news:1150387411.434274.122720@h76g2000cwa.googlegroups.com: 

> 
> Al Clark wrote:
>> "Leon" <leon.heller@bulldoghome.com> wrote in
>> news:1150366594.811674.145580 @p79g2000cwp.googlegroups.com:
>>
>> > I've just got a couple of samples of the new ADSP-21262 SHARC DSP
>> > (1200 MFLOPS!) in the LQFP package. It is a masked-ROM device, and
>> > I wondered if there was likely to be anything useful in the ROM.
>> >
>> > I've started designing a simple PCB so that I can play with them,
>> > it'll consist basically of  the '21626 and a suitable codec.
>> >
>> > Leon
>> >
>> >
>>
>> The 21262 has the potential for ROM (if you pay for a mask charge and
>> buy a gazillion). The 21266 is the same part with code in the ROM.
>> These are audio algorithms from Dolby, DTS, etc that must be licensed
>> accordingly. 
>>
>> We sell many 21262 boards that you may want to look out before you do
>> your own. It will be much cheaper.
>>
>> You might want to take a look at the 21369 as well. This is the
>> latest third generation SHARC. We think it will be the dominant DSP
>> in our lineup by next year and the most popular for development this
>> year. 
> 
> Thanks, Al. I'd rather design my own as I have rather specific
> requirements for the final sytem - with a Cyclone II FPGA and
> high-speed USB interface, as small and cheap as possible, for amateur
> radio applications.
> 
> Leon
> 
> 

Having participated in the amateur radio market, I can appreciate the 
cost side. As a hobby, ham radio is fine. I think it is a difficult 
business to make money in. I co-founded Timewave, which still is active 
in this market.

We currently have a board with high speed USB & an ADSP-21369. We are 
planning a dspblok 21369 with 64Mbit SDRAM & a Cyclone 2 for later this 
year. The dspblok is 60mm x 60mm. This is fairly small when you look at 
the size of the components. 

-- 
Al Clark
Danville Signal Processing, Inc.
--------------------------------------------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com

Al Clark wrote:
> "Leon" <leon.heller@bulldoghome.com> wrote in news:1150366594.811674.145580
> @p79g2000cwp.googlegroups.com:
>
> > I've just got a couple of samples of the new ADSP-21262 SHARC DSP (1200
> > MFLOPS!) in the LQFP package. It is a masked-ROM device, and I wondered
> > if there was likely to be anything useful in the ROM.
> >
> > I've started designing a simple PCB so that I can play with them, it'll
> > consist basically of  the '21626 and a suitable codec.
> >
> > Leon
> >
> >
>
> The 21262 has the potential for ROM (if you pay for a mask charge and buy a
> gazillion). The 21266 is the same part with code in the ROM. These are
> audio algorithms from Dolby, DTS, etc that must be licensed accordingly.
>
> We sell many 21262 boards that you may want to look out before you do your
> own. It will be much cheaper.
>
> You might want to take a look at the 21369 as well. This is the latest
> third generation SHARC. We think it will be the dominant DSP in our lineup
> by next year and the most popular for development this year.

Thanks, Al. I'd rather design my own as I have rather specific
requirements for the final sytem - with a Cyclone II FPGA and
high-speed USB interface, as small and cheap as possible, for amateur
radio applications.

Leon

"Leon" <leon.heller@bulldoghome.com> wrote in news:1150366594.811674.145580
@p79g2000cwp.googlegroups.com:

> I've just got a couple of samples of the new ADSP-21262 SHARC DSP (1200
> MFLOPS!) in the LQFP package. It is a masked-ROM device, and I wondered
> if there was likely to be anything useful in the ROM.
> 
> I've started designing a simple PCB so that I can play with them, it'll
> consist basically of  the '21626 and a suitable codec.
> 
> Leon
> 
> 

The 21262 has the potential for ROM (if you pay for a mask charge and buy a 
gazillion). The 21266 is the same part with code in the ROM. These are 
audio algorithms from Dolby, DTS, etc that must be licensed accordingly.

We sell many 21262 boards that you may want to look out before you do your 
own. It will be much cheaper.

You might want to take a look at the 21369 as well. This is the latest 
third generation SHARC. We think it will be the dominant DSP in our lineup 
by next year and the most popular for development this year.

 

-- 
Al Clark
Danville Signal Processing, Inc.
--------------------------------------------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com

I've just got a couple of samples of the new ADSP-21262 SHARC DSP (1200
MFLOPS!) in the LQFP package. It is a masked-ROM device, and I wondered
if there was likely to be anything useful in the ROM.

I've started designing a simple PCB so that I can play with them, it'll
consist basically of  the '21626 and a suitable codec.

Leon