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sinara-hw / Phaser

Quad channel 1GS/s RF generator card with dual IQ upconverter and dual 5MS/s ADC and FPGA in EEM form factor
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IC10 unavaliability #135

Closed pkozakiewicz closed 1 year ago

pkozakiewicz commented 3 years ago

Please find an alternative for SC18IS602B bridge in the new release. This component became very hard to purchase. Maybe double footprint should be considered.

gkasprow commented 3 years ago

I think we can use SC18IS602IPW SC18IS602IPW does not support SS2. This pin should be used as GPIO2 only. We don't care about SS2 and use it as GPIO.

pkozakiewicz commented 3 years ago

SC18IS602IPW is an obsolete.

gkasprow commented 3 years ago

the same with SC18IS603 which could be potentially used

gkasprow commented 3 years ago

this is not a critical part - it's used only during remote FPGA programming. The lead time is 52 weeks. What about this source? https://www.win-source.net/interface-controllers-sc18is602bipw112.html

pkozakiewicz commented 3 years ago

We will check, but for the future I would prefer to have something available in the EMEA market. It can take weeks for packages from HK to arrive.

jordens commented 3 years ago

IIRC we use that chip on Banker, Humpback, Fastino and Phaser. It would be unfortunate if we have to redesign the hardware and software.

gkasprow commented 3 years ago

It is still produced, but recently electronics production is tough because many components have availability issues. Even when we redesign it, there is no guarantee that after a month or so the issue won't reappear. The only remedy is to keep the stock of hard to get components.

gkasprow commented 3 years ago

It is normally available in Mouser/Farnell and other stores. As I said, recently there are shortages of many components.