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标题: PCIe显卡,16对 Receive 信号是闲置的吗? [打印本页]

作者: Quantum_    时间: 2018-1-24 15:05
标题: PCIe显卡,16对 Receive 信号是闲置的吗?
1. x16 的显卡, 共有HSI(0)n/p ~ HSI(15)n/p 16对Receive信号(显卡到CPU). ( w5 W0 O' t( ^  B
2. 显卡只是一个输出设备,只接收CPU的输出, 并不需要与CPU高速交互。
9 B% |$ `- P9 N5 a% v5 X3. 那么, 第1点描述的16对线, 是否就一直是闲置的? (这么浪费,有点不可思议!特发此问)
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2 |5 S$ c: v' f* w/ v  r9 T谢谢!
作者: 超級狗    时间: 2018-1-24 22:56
PCI Express Basics and Background
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PCI_Express_Basics_Background.pdf

1.88 MB, 下载次数: 15, 下载积分: 威望 -5


作者: Quantum_    时间: 2018-1-26 14:05
Dear Super: y& T5 e& H* U5 X5 |
I still can't understand what happened to PCIe receiver signals to make them transmit signal from Device to Host, after reading your attachment carefully. & `9 F! ?' a' J: E8 [8 n1 ^* g
Do you mean that the answer of my question is concluded in the chapter below?
! Z* B& v. Z0 {3 U, @/ B"Credit-based flow control is point-to-point based, not end-to-end, "6 s% j- L& |3 V
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"Split Transactions"
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Do you have any other stuff for a rookie EE to learn about the PCIe Dispaly Card.
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Thanks very much.
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作者: ykwym    时间: 2018-2-7 22:57
PCIe的有些包发出来是需要接收端发信息回去,确保包是一定被收到的。so。。。




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