Background
This is level 1 of 5. The records for this level are in workspace/t1/.
Task
Subject: IO timing before the flow freeze
Hi,
We freeze the implementation flow for the student chip on 27 November. Before then I need an IO budget for the freeze minutes. Please work from our Croc checkout and the group conventions in tapeout-2026. Keep the checkout's board load and the 100 MHz system clock.
For each group of output ports, what range of its cycle is left for our own logic after the pad and the external timing constraint, at the corners the flow loads today and at the slow corner? I need the budget over the characterised pad-input transitions as well as a usable planning estimate, its library basis and the assumptions that matter before layout. Please flag anything that prevents us relying on a budget for sign-off, and give me your recommendation for the freeze.
Put the workbook in workspace/t1/results/io_budget.xlsx. I will paste its summary into the minutes, so please make it usable without opening the flow scripts during the meeting.
Thanks, Mira
Input
workspace/t1/: the records supplied with the work (croc/,tapeout-2026/).
Output
workspace/t1/results/io_budget.xlsx