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6700PXH 参数 Datasheet PDF下载

6700PXH图片预览
型号: 6700PXH
PDF下载: 下载PDF文件 查看货源
内容描述: 64位PCI中枢 [64-bit PCI Hub]
分类和应用: PC
文件页数/大小: 194 页 / 2283 K
品牌: INTEL [ INTEL ]
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Signal Description  
Figure 2-12. Intel® 6700PXH 64-bit PCI Hub Clocking Diagram  
The Intel® 6700PXH 64-bit PCI Hub component uses a 100-MHz differential pair clock inputs to  
generate all of its core and PCI clocks. The differential clock inputs EXP_CLK and EXP_CLK#  
are part of the PCI Express* interface. Board design must insure that all voltages supplying the  
Intel® 6700PXH 64-bit PCI Hub (VCC, VCCEXP, VCC33 and VCC15) are valid before these PCI  
Express* clocks begin running.  
These clocks are fed into internal logic contained within the Intel® 6700PXH 64-bit PCI Hub to  
generate a 2.5 GHz clock that runs the PCI Express* interface and the Intel® 6700PXH 64-bit PCI  
Hub core. This 2.5 GHz clock is then fed into additional internal logic that converts the clock  
frequency to one of the PCI/PCI-X supported frequencies (33/66/100/133 MHz for PCI or PCI-X).  
Each of the PCI Bus segments supports 7 PCI output clocks, called PxPCLKO[6:0], where ‘x’ is  
either and A or a B depending on which PCI Bus segment is being referenced. The PxPCLKO[6]  
output clock is connected to the PCI feedback clock input PxPCLKI.  
2.17.2  
Component Reset  
There are five types of reset that can be performed on the Intel® 6700PXH 64-bit PCI Hub. These  
are listed from highest level of reset to the lowest level reset:  
PWROK – this signal indicates stable power when high and causes an asynchronous reset of  
the entire Intel® 6700PXH 64-bit PCI Hub chip when low.  
RSTIN# – this is also an asynchronous reset to the Intel® 6700PXH 64-bit PCI Hub and can  
be used for resetting the Intel® 6700PXH 64-bit PCI Hub for the front panel reset.  
Intel® 6700PXH 64-bit PCI Hub Datasheet  
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