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Our CM is complaining about the long reference designators created by Concept-HDL from hierarchical designs. Some of their software only accepts 7 character reference designators. In a design that has 4 levels, we have strings up to twenty characters. For example DAC1_CHAN0_MOD0_REG0. We can shrink that to something like U1C0M0R0 but that is still 8 characters and harder to read. It could easily go to 9 or more if the number for each level exceded 1 character. We need to use hierarchy for effeciency and clarity in the design.Anyone else run into this problem? And do you have any suggestions about how to resolve it in the design data?
Yes, we ran into the very same issue a few years ago when we first started implementing Design Reuse. We concluded that we really needed TWO reference designators, one for our engineering folks and one for the Manufacturing/MRP/PDM/Documentation folks.The Engineering ref des would preserve the hierarchical nature of the design and would be very intuitive to the engineers in showing the inherited relationships in the design.The other ref des would meet the needs of the other downstream systems that have restrictions on character length.We have communicated this need to Cadence. I'm not sure if this is still on their radar screen to implement. I would certainly invite you (and others) to join the party and request this!In the mean time, the engineers in our company have to sacrifice for the sake of the other systems.
hi,we r using hierarchical design and we encountered a serious prob....we cnat found any reference designators for the components..plz help to solve this...thanks in advance
Joe,I'm not sure what you mean. Could you please provide additional details. Is this a schematic problem (Capture or Concept)? Is this a layout problem?If it's a schematic problem and you're usign Concept, have you turned on Occurrence Edit Mode?