... | ... | @@ -58,6 +58,8 @@ PCB |
|
|
- ZL9101M is EOL
|
|
|
- SI and PDN analysis at this stage does not make much sense.
|
|
|
- not enough power for 3.3V rail. If we assume each SFP taking 0.7W they will already use 5.3A. The DC/DC is rated for 5A and there is much more stuff supplied from that rail. Note that some SFPs, especially long range take much higher power
|
|
|
- I did initial PDN analysis for VCCINT and for existing layout at 10A we will get 688mV at the centre of FPGA
|
|
|
- there is current density of over 250A/mm2 while it should not exceed 50A/mm2.
|
|
|
|
|
|
|
|
|
-------------------------------------------------------------------------------
|
... | ... | |