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TmS320C6416 PCI 接口问题

Other Parts Discussed in Thread: TMS320C6416

你好,我使用的TMS320C6416遇到了如下问题:板卡插在pci主机上,识别不到PCI设备。和PCI相关的硬件配置应该都是正确的,有两块板卡,硬件设计相同,第一块正常已交付,但是第二块板卡始终识别不到。通过测量Frame,Pclk,be(3:0),idsel,DEVSEL,PTRDY,Pirdy 发现dsp所驱动的DEVSEL和PTRDY 信号始终处于无效状态。另外,DSP通过jTAG可以识别到,测clkout4这些信号也正常。有哪些原因可能造成这个现象?

期待您的回复!万分感谢!