Other Parts Discussed in Thread: SK-AM68, AM68A, , , CDCI6214
Tool/software:
Dear All,
we are designing with AM68A and want to replace CDCI6214RGET ( SK-AM68 EVM) with LMK3H0102 or LMK3H0102-q1 and have some questions:
1) Do you recommend LMK3H0102 or LMK3H0102-q1 over CDCI6214RGET for PCIe input clock?
2) When in I2C mode the default values are loaded from OTP PAGE 0 as per DS
Eg Out0 is 100MHz 100hm LP-HCSL and it is disabled
-> We want this clock to be enabled upon start-up , can we pull the OE0 pin to low so that the output is enabled?
OR do we need also to toggle the EN bit in register in order to enable the CLK out?
-> is there a way that the clk output will be enabled upon start-up in I2C mode?
3) It is stated in DS that LP-HCSL output have 50OHm termination to GND in booth devices, nevertheless on on AM68A evm the output have 33Ohm series termination and additional 50Ohm to gnd termination , please can you explain why external termination if a internal is available?
Best Regards,
d.