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CDCE6214-Q1: CDCE6214-Q1 with AM69A

Part Number: CDCE6214-Q1
Other Parts Discussed in Thread: AM69A, , CDCE6214

I am going to to use PCIe GEN3 in AM69A. In the design I will use a clock generator and a clock multiplier for ref clocks. 

As seen in block diagram I want to use 2 different lp-hcsl ref clk input to AM69A so I will use 2  CDCE6214-Q1.

  1. I will generate lp-hcsl output  from xtal or ref clk in. For diff ref clk in can I use lp-hcsl clk type?
  2. If I use LP-hcsl for ref clk in Do I have to use ac coupling cap next to ref clk in?
  3. I will supply clk out voltages(VDDO12 and VDDO34) with 3.3V. So Can I directly connect AM69A serdes banks  for reference inputs. (the banks voltages are 1.8V)

  • Asim,

    The input clock can be either XTAL or LP-HCSL. PRIREF does not accept XTAL inputs, only SECREF.

    The inputs must still be AC-coupled for the LP-HCSL input to the CDCE6214.

    If the outputs are LP-HCSL, there is no issue.