ENTITY pck_px IS
  GENERIC (
    CONSTANT area : NATURAL := 80000;	
    CONSTANT cin_pad : NATURAL := 1326;	
    CONSTANT tpll_pad : NATURAL := 1443;	
    CONSTANT rdown_pad : NATURAL := 58;	
    CONSTANT tphh_pad : NATURAL := 228;	
    CONSTANT rup_pad : NATURAL := 68	
  );
  PORT (
  pad : in BIT;	
  ck : out BIT;	
  vdde : in BIT;	
  vddi : in BIT;	
  vsse : in BIT;	
  vssi : in BIT	
  );
END pck_px;


ARCHITECTURE behaviour_data_flow OF pck_px IS

BEGIN
  ck <= pad;

  ASSERT ((((vddi and vdde) and not (vssi)) and not (vsse)) = '1')
    REPORT "power supply is missing on pck_px"
    SEVERITY WARNING;
END;