Answers Database

M1.3 MAP: What do "Clock IOBs" mean in the MAP report ?


Record #2362

Product Family:  Software

Product Line:  Merged Core

Problem Title:
M1.3 MAP: What do "Clock IOBs" mean in the MAP report ?


Problem Description:
Keywords: IOBs, BUFGS, BUFGP, BUFGLS, BUFGE, BUFFCLK

Urgency: Standard

Reference: 14616

General Description:

It may not be clear as to what resources the "Clocked IOBs"
line in the Map report file is referring to.


Solution 1:

What the "Clock IOBs" are referring to are any of the
dedicated pins with direct access to global buffers:

XC3000A/L:   ACLK, GCLK
XC4000/E/L:  BUFGS or BUFGP
XC4000EX/XL: BUFGLS/BUFGE, BUFFCLK



End of Record #2362