[Cryptech Tech] Updated version of alpha board drawing and description available

Joachim Strömbergson joachim at secworks.se
Thu Mar 26 07:55:32 UTC 2015


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Aloha!

Joachim Strömbergson wrote:
> Aloha!
> 
> Павел Шатов wrote:
>> Joachim, can you recommend what EEPROM to use for FT232H 
>> configuration?
> 
> None. You don't need an EEPROM, esp if you want it to be a USB-UART 
> interface.

To be more exact, see chapter seven in:

http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT232H.pdf

"If the FT232H is used without an external EEPROM the chip defaults to a
USB to asynchronous serial UART (RS232 mode) port device. If no EEPROM
is connected (or the EEPROM is blank), the FT232H uses its built in
default VID (0403), PID (6014) Product Description and Power Descriptor
Value. In this case, the device will not have a serial number as part of
the USB descriptor."

If we wanted to go to SPI, synch FIFO etc we would need an EEPROM.

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
========================================================================
 Joachim Strömbergson          Secworks AB          joachim at secworks.se
========================================================================
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