Wow! It looks good, if they will actually STOCK any parts.

It reminds me of the SPI serial interface they sell. It worked
OK, had a quirky oscillator, but was fixable.

--Bob

Denny Esterline wrote:

>Has anybody else seen these? any opinions?
>It's a SPI based full speed USB interface
>MAX3420E
>
>Press release:
><http://www.maxim-ic.com/view_press_release.cfm/release_id/1152>
>
>Product page <http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4751>
>
>>From the product page:
>The MAX3420E contains the digital logic and analog circuitry necessary to
>implement a full-speed USB peripheral compliant to USB specification rev
>2.0. A built-in full-speed transceiver features =B115kV ESD protection and
>programmable USB connect and disconnect. An internal SIE (serial-interface
>engine) handles low-level USB protocol details such as error checking and
>bus retries. The MAX3420E operates using a register set accessed by an SPI
>interface that operates up to 26MHz. Any SPI master (microprocessor, ASIC,
>DSP, etc.) can add USB functionality using the simple 3- or 4-wire SPI
>interface.
>
>Internal level translators allow the SPI interface to run at a system
>voltage between 1.71V and 3.6V. USB timed operations are done inside the
>MAX3420E with interrupts provided at completion so an SPI master does not
>need timers to meet USB timing requirements. The MAX3420E includes four
>general-purpose inputs and outputs so any microprocessor that uses I/O pins
>to implement the SPI interface can reclaim the I/O pins and gain additional
>ones.
>
>The MAX3420E operates over the extended -40=B0C to +85=B0C temperature ran=
ge and
>is available in a 32-pin TQFP package (7mm x 7mm) and a space-saving 24- p=
in
>TQFN package (4mm x 4mm).
>
>
>
>-Denny
>
>  =

>


-- =

Note: To protect our network,
attachments must be sent to
attach@engineer.cotse.net .
1-520-850-1673 USA/Canada
http://beam.to/azengineer

-- =

http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist