| 主题：介绍NXP PCIe 器件 |
| 在线问答： |
| [主持人：ChinaECNet] |
各位听众（网友），上午好！欢迎参加中电网在线座谈。今天，我们有幸邀请到NXP公司的专家就“ 介绍NXP
PCIe 器件”举行在线座谈。在座谈中，您可就您关心的问题与NXP公司的专家在线进行直接、实时的对话交流。中电网衷心希望通过大家的共同努力，不仅能够增进各位听众（网友）对“介绍NXP
PCIe 器件”的了解和掌握，而且能够为大家事业的发展带来裨益。 |
[2006-8-10 10:25:08] |
| [问：itc008] |
请问PCI-E的速度跟AGP4速的速度量化对比关系？哪个快？ |
| [答：Lam] |
AGP4 is supposed to be replaced by PCI Express. Actually, in new Intel-based
motherboards, graphics cards are predominately offered by PCI Express
instead of AGP already. PCI Express x16 is typically used for graphics,
and the speed is 16 times 2.5Gb/s = 40Gb/s. |
[2006-8-10 10:31:02] |
| [主持人：ChinaECNet] |
我们已经进入问答阶段如果听众想重温演讲或内容可以点击下面“回顾演示”重看演讲。 |
[2006-8-10 10:31:55] |
| [问：lawyer] |
PCI，PCI-X，PCI-Express这几种接口在性能和使用上有何区别或联系? |
| [答：Lam] |
PCI is parallel 33MHz/66MHz 32-bit/64-bit interface. PCI-X is an extended
version of PCI, and is still a parallel interface with improved features.
PCI Express is serial running at 2.5Gb/s for one lane, and is scalable
to up to 16 lanes. So PCI Express is much higher speed, and uses only
4 serial lines for 2.5Gb/s! That is it is also easier for PCB layout and
cheaper for total system cost. PCI Express is expected to replace PCI,
PCI-X, AGP, PCMCIA PC Card, Cardbus etc. |
[2006-8-10 10:34:41] |
| [问：qizhi_liu] |
NXP PCIe现在有几款?参考价格多少？在中国市场是否已经有售？开发和使用这些芯片是否需要单独的开发环境，如驱动需要编写等？谢！ |
| [答：RChen] |
目前NXP已供货的有X1 PHY 芯片PX1011A和通道开关CBTU0808,在中国市场已经有售,PX1011A少量的参考价是8美元,具体价格可以通过我们的代理AVNET询价.开发和使用这些芯片只需要一个FGPA开发环境.(XILINX...) |
[2006-8-10 10:34:59] |
| [问：zhouwuqiang] |
PCI E相比PCI的除速度外，最大特点是什么？ |
| [答：Lam] |
Please see our answer to a previous question. |
[2006-8-10 10:36:25] |
| [主持人：ChinaECNet] |
在此回答问题的专家是NXP公司的：Ho Wai Wong-Lam、Aika Tsai、Richard
Yu、Eric Wu、Richard Chen和 Christian Paquet。 |
[2006-8-10 10:36:26] |
| [问：lawyer] |
NXP是否提供PCIe的IP核? |
| [答：RYu] |
No, we don"t provide IP cores. We hv 3rd party partners providing
IP cores. |
[2006-8-10 10:36:44] |
| [问：elmer] |
能应用在哪些家电上? |
| [答：Lam] |
PCI Express is mainly used computer-based systems, but already some
set-top boxes are using PCI Express as well. |
[2006-8-10 10:37:34] |
| [问：spcatv] |
PCI Express在数字电视机上有什么应用吗? |
| [答：Lam] |
To provide high-speed interface allowing multiple TV channels to be
watched, recorded and processed simultaneously. |
[2006-8-10 10:38:28] |
| [问：bobodu] |
PCI Express和高速总线Hyper Transport 在性能上和应用上有何差别? |
| [答：Lam] |
PCI Express and HyperTransport are functionally similar. HyperTransport
is mainly used for chip-chip interconnect on AMD platform. PCI Express
is used for IO connectivity on both Intel and AMD based platforms. |
[2006-8-10 10:40:32] |
| [问：ihopecao] |
您好，请问一下NXP又没有PCie toPCI的器件呢？ |
| [答：Lam] |
No. |
[2006-8-10 10:40:43] |
| [问：qizhi_liu] |
请问：PCIE与PCI的软件兼容是代码级的还是源程序级的，需要重新编译或者修改代码吗？ |
| [答：Christian] |
In theary, the source code is indeed compatible with PCI. However, the
PCIe code may have specific configuration registers. In that case, recompile
is required |
[2006-8-10 10:44:39] |
| [主持人：ChinaECNet] |
在此回答问题的专家是NXP公司的：Ho Wai Wong-Lam、Aika Tsai、Richard
Yu、Eric Wu、Richard Chen和 Christian Paquet。 |
[2006-8-10 10:47:00] |
| [主持人：ChinaECNet] |
各位观众，现在用户提问很踊跃，专家正在逐一回答。请耐心等待您问题的答案，同一问题请不要多次提交。 |
[2006-8-10 10:51:35] |
| [问：飞翔青鸟] |
PCI-Express在主从设备中使用时,如何做到时钟的同步? |
| [答：Lam] |
PCI Express does not require the transmitter and receiver to have the
same clock. The clock is embedded in the data stream, and is recovered
at the receiver side automatically. |
[2006-8-10 10:51:51] |
| [主持人：ChinaECNet] |
各位观众，现在用户提问很踊跃，专家正在逐一回答。请耐心等待您问题的答案，同一问题请不要多次提交。 |
[2006-8-10 10:53:43] |
| [问：qmyi] |
请问NXP PCIe的兼容性如何？ |
| [答：Lam] |
Very good. NXP PCI Express PHY solution is very well tested in a
multitude of PC systems and many system-level tests have been done by
NXP and our partners. So this is a very mature design and product.
Many interoperability tests have been done. Please visit http://www.standardics.NXP.com/support
/faq/interface/pcie.compliance/ |
[2006-8-10 10:58:12] |
| [问：aquarius_song] |
请问NXP的PHY芯片和Ti的相比有什么优势？谢谢 |
| [答：Lam] |
NXP has a smaller package and lower power dissipation, which makes
it ideal for all kinds of form factor, including ExpressCard modules.
NXP PCI Express PHY solution is very well tested in a multitude of
PC systems and many system-level tests have been done by NXP and our
partners. So this is a very mature design and product. We work with many
PCI Express IP vendors, so you have a wide choice of PCI Express IP vendors.
There are also many 3rd party design kits with NXP PHY, so that you
can test out your design without investing in your own PCB design. Many
interoperability tests have been done. Please visit http://www.standardics.NXP.com/support
/faq/interface/pcie.compliance/ |
[2006-8-10 10:59:37] |
| [问：bobodu] |
串行PCI Express, 对时钟有何特别的要求如抖动和相位? |
| [答：Lam] |
PCI Express does not require the transmitter and receiver to have the
same clock. The clock is embedded in the data stream, and is recovered
at the receiver side automatically. |
[2006-8-10 10:59:49] |
| [问：spcatv] |
如何确保PCI Express总线传输数据的安全性? |
| [答：RChen] |
NXP可以提供相关的技术文档,如PCB LAYOUT的技术文档来指导工程师,以提高PCI Express总线传输数据的安全性和可靠性 |
[2006-8-10 11:00:48] |
| [问：飞翔青鸟] |
ISA接口的延时很难控制,PCI中的延迟是否也很难控制? |
| [答：RChen] |
PCI-E是采用差分信号传输,很好的解决了传输过程中的延迟和同步问题 |
[2006-8-10 11:03:14] |
