Hi
> What about placing one TYCO ELECTRONICS MICROSMD075F (in 1210 package) in
> series with *both* connectors ("ganged" configuration), with a current limit
> of roughly 1.5A (to allow a margin for non-compliant gadgets that use more
> than 500mA)? Looks like the simplest option to me...
Since Ih equals 0.75A, yes, actually further increases in either
current, ambient temperature, or both will cause the device to reach a
temperature where the resistance rapidly increases, that's the margin
we will be met. So the trip point will be under 1.5A practically.
[1]
http://www.tycoelectronics.com/catalog/bin/TE.Connect?C=1&M=BYPN&TCPN=RF1354-000&RQPN=MICROSMD075F-2
[2] http://uk.mouser.com/catalog/640/605.pdf
>> If can let resistor value to be zero and traced to connectors as
>> option if one wants to add extra device via I2C later. This could
>> exempt from misconfiguration also make I2C extendable potentially.
>> Some hackers may like.
>
> For extending, I'm rather thinking of routing some spare FPGA I/Os to a
> dedicated connector. This way, adding I2C (or other) devices can be done
> without risk of interfering with the video input.
Sounds great. Yeah. Using FPGA spare pins is better than adding parts.
Adam
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