标题: [求助] xilinx: 普通IO能驱动MMCM吗? [打印本页] 作者: h2o_freely 时间: 2013-7-4 20:51 标题: [求助] xilinx: 普通IO能驱动MMCM吗? 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! X, q# ]0 e( _; h$ O( S
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),( w J7 Q$ Y1 X0 h% v- H+ ^
or b) the IOB is placed on a global clock capable IOB site which has a dedicated fast path to all MMCM sites.3 O y8 E8 ^8 U! j
6 J" @0 l; {- AISE建议用 CLOCK_DEDICATED_ROUT = FALSE 来使error变为warning。. U. m b. |' s& D5 U
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请问，是否还有别的方法？ " d" A0 O$ c6 n+ H8 M& e7 _/ {1 C9 } t v+ w
有的情况即时使用CLOCK_DEDICATED_ROUT = FALSE，还会出现：1 D6 [8 y* d: z6 b
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.8 T y& ^3 V7 l3 \1 v