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M1.3 MAP: What do "Clock IOBs" mean in the MAP report ?
Keywords: IOBs, BUFGS, BUFGP, BUFGLS, BUFGE, BUFFCLK
It may not be clear as to what resources the "Clocked IOBs"
line in the Map report file is referring to.
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
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