how to assign pads to a sub-block layout.

henry_wangjj

Dear all, here comes a trouble when I am doing rectilinear floor planning using Astro.

I need to assign both PADs and pins to a T-shaped rectilinear floorplan, which is a sub-block of a design, but the PADs are not placed properly when I initialized floorplan, Could anyone give me some advice ?

or some instruction on the full-chip layout design?

henry_wangjj

Could anyone give me some help ?or anything about the hierarchical floorplan or the layout of IP with PADs?

Thanks in advance!

1359784773

ICC中-side选项吧

henry_wangjj

回复 3# 1359784773


    Thank you very much, we planned to implement the layout using Astro at this stage since we are not very familiar with ICC.
And, I have communicated with an engineer of synopsys, they suggest to place the PADs manually, treating the PAD as normal macros.

icfbicfb

very easy, place the PADS manually,

you are in shanghai ? we can help you on site ,

henry_wangjj

回复 5# icfbicfb

Thank icfbicfb very much, as what you have said, the PAD could  be modified manually.

however,  when I try to assign the Pins by loading the TDF files, Astro give the Error info as shown below:

INFO: point set is clockwise
INFO: top boundary has 8 sides
INFO: 0 IO pins considered in design
INFO: there is no valid pins to work on
ERROR: rectilinear pin initial placement failed.

all of the Pins couldn't be placed, for example, clk_osc, which comes from the analog block, serves as an input port in the top module of the digital block, when I loaded the netlist, Astro gives the following Warnings:

WARNING : boundary port clk_osc has no pin
  treat net clk_osc as pseudo net and mark it dont_touch

Any help?
thanks in advance!

icfbicfb

as for rectilinear floorplan ,  please use axgRectiPlanner，

or  create boundary yourself,  like geAddRectilinearBoundary ,

axgRectiPlanner
setFormField "Rectilinear Floor Planning" "Mode" "Enter Boundary"

henry_wangjj

回复 7# icfbicfb


    Thanks, info. given above is right from axgRectiPlanner.

I remember in ICC, floating Pins should set some constraints, and is this needed in Astro?

icfbicfb

yes , in  tdf file , can set som constraints ,

sunilrirt

Thanks