[hpsdr] Appropriate Altera part choices

[Philip Covington]

On 5/11/06, Alex <harvilchuck at yahoo.com> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> So an argument could be made that most plugin cards should use the MAX II, and the more complex plugin cards (OZY,  SASQUATCH, etc.) should consider using the Cyclone II.
>
> Has JANUS (or MERCURY) completed the ATLAS bus interface using the MAX II? If so we should consider using it for GIBRALTAR and other cards. It will help with debugging and development if we have common design elements.
>
> Plus PROTO (the prototyping board) could be designed reusing the same MAX II element and vhdl interface code.
>
> Alex, N3NP

Hi Alex,

The MERCURY will probably use a Cyclone II because of the need to do
DDC on-board.  The MAX II EPM240 is a nice inexpensive part and I like
the idea of using it on the various slave/interface boards like the
JANUS.  This adds an extra layer of protection against "OH S**T" type
of things as far as conflicts on the ATLAS bus.  The MAX II also has
some user flash memory built in to allow storage/retrieval of device
settings and serial numbers/board IDs. etc... over either our I2C or
SPI bus lines.

73 de Phil N8VB

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