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map的时候总是报错 ：ERROR : Place : 1155 - A clock IOB/MMCM clock component pair have been found MMCM site pair. The clock IOB component <xx>is placed at site <M22>. the corresponding MMCM component <XXX> is placed at site <MMCM_ADV_X0Y7>.The clock IO can use the fast path between the IOB and the clock manager if$ k0 [, Q" a4 i5 l0 _- p: B
a) the IOB is placed on a local clock capable IOB site in the same horizontal clock region pair as the MMCM site (fastest dedicated path),
( M% m M) D& {. {3 c8 a$ [% I; uor b) the IOB is placed on a global clock capable IOB site which has a dedicated fast path to all MMCM sites.! ]- M' I. [( T6 R" j
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ISE建议用 CLOCK_DEDICATED_ROUT = FALSE 来使error变为warning。
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" B# P& y6 t8 j. K" j; k. m请问，是否还有别的方法？# [4 r' Q* a2 U# @
! [( C4 d. ^3 u" q; N' `有的情况即时使用CLOCK_DEDICATED_ROUT = FALSE，还会出现：
( d2 N7 K$ _3 t( }physDesignRules:2053 - unsupported MMCM_ADV configuration. The signal xx on the CLKIN1 pin of MMCM_ADV comp xxx with COMPENSATION mode ZHOLD must be driven by a clock capable IOB.% Z1 _. S! r1 E8 ^/ G. j* P+ O
3 b$ P. t. a9 [/ s2 W$ R2 ?8 n请教，这个如何解决？* ~4 ^# i8 Z/ T1 D3 e
因为pcb已经做好，pin的位置都固定了，没法把时钟信号重新连dao clock capable IOB的pin上了。
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# X8 [$ l3 P, v0 y* r谢谢 |
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发表于 2013-7-4 20:51
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