[Coco] [Color Computer] FYI: USB Modules & Add-Ons

[Mark Marlette]

james,

I would agree...I'm an Atmel fan.

Mark
Quoting jdaggett at gate.net:

> Mark
>
> Here is the PDF errata sheet link:
>
> http://www.cypress.com/portal/server.pt?space=CommunityPage&control=SetCo
> mmunity&CommunityID=209&PageID=259&fid=10&rpn=SL811HS
>
> next to the data sheet is the errata link to download the errata sheet.
>
> To me I have issues with a device that is essential broke and the only  work
> arround is not use the feature. Auto address increment is where I 
> have the most
> issues. At 2MHz buss rate reading up to 64 bytes from the FIFO and having to
> write the address for each byte read is double the time.
>
> Erratas that may be of concern:
>
> #6 details the issues with auto increment function. From what I gather
> #this is an
> intermittant problem and the only workaround is to not use the
> autoincrement mode on addressing.
>
> #1 concerns with SEO when in host mode working and low speed with certain
> hubs. SOFs stop being sent.
>
> #2 deals with Sync to SOF in low speed mode is not functional.
>
>
> james
>
>
>
> On 4 Sep 2006 at 13:36, Mark Marlette wrote:
>
>> james,
>>
>> Do you have a link to the errata?
>>
>> Mark
>>
>> At 9/3/2006 02:06 PM, you wrote:
>>
>> >On 2 Sep 2006 at 23:30, Gene Heskett wrote:
>> >
>> > > And this is the major advantage over the FTDI devices shown on the same
>> > > web page as it appears these might be usable with nothing more than chip
>> > > select logic, and possibly a byte wide fifo for rx buffering.  
>> The cheaper
>> > > FTDI devices would also need an rs232 type uart, raising the
>> > > implementation cost considerably.
>> >
>> >**************
>> >
>> >The FT245B/R devices interface to a parallel 8 bit data buss. Same
>> >function as
>> >the FT232. The FT245B is $6.33 in unit cost and the FT245R is $4.94
>> >unit cost.
>> >Like the Cypress SH811 device, someone has to write drivers for DEB/OS9 to
>> >make them useable. From best I can tell the FT245 would be a better 
>> solution
>> >than the Cypress chip due to errata and the lack of Cypress to correct some
>> >issues in the chip design.
>> >
>> >james
>> >
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>> >
>> >
>> >
>> >
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>
>
>
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