DevGuide_zh.md

OCP2PCIe

OCP 夹层网卡转标准 PCIe 槽转接卡设计
OCP Mezzanine card V2.0 to standard PCIe slot adapter design

请使用最新版 KiCAD 编辑
Please use the latest KiCAD version

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Catalog

目录

• Directory Description
  文件说明

  • Name Rule
    项目命名规则

• Manufacturing instructions
  制造说明

• Some Problem
  疑难问题

  • About PCIe Lanes Sequence
    关于 PCIe 通道顺序问题

  • ⚠About 5V Power⚠
    关于5V供电

Directory Description

文件说明

\OCP2PCIe_Lib
OCP2PCIe 公共 KiCAD 库
OCP2PCIe public KiCAD lib

\OCP2PCIe-*-*-*
项目分类，命名规则见下一节
Project classification, see the next section

Name Rule

项目命名规则

OCP2PCIe-H-F-4-V0.1 @

• OCP2PCIe 项目名称 / Project Name

• H: 全高 PCI 卡 / Standard Height PCI Card
  L: 半高 PCI 卡 / Low-Profile PCI Card

• F: PCIe 通道顺序连接 / PCIe lane sequential connection
  R: PCIe 通道逆序连接 / PCIe lane reverse connection
  详细描述见最后一节 / See the last paragraph for a detailed explanation

• 1/2/4/8/16: PCIe 通道数 / PCIe Lanes

• V0.1: 版本号 / Version

Manufacturing instructions

制造说明

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Some Problem

疑难问题

About PCIe Lanes Sequence

关于 PCIe 通道顺序问题

OCP卡有两种不同的连接方式，目前已知这两种方式都可以工作，但具体的性能和稳定性影响未知
OCP Mezz has two different connection methods. Currently it is known that both methods can work, but the specific performance and stability impact is unknown.

• 顺序连接 / Sequential connection
  OCP插槽通道与PCIe通道按顺序相连，如0-0、1-1、2-2、3-3
  The OCP slot lanes are sequentially connected to the PCIe lanes, etc: 0-0, 1-1, 2-2, 3-3

• 逆序连接 / Reverse link
  OCP插槽通道与PCIe通道按逆序相连，如7-0、6-1、5-2、4-3
  The OCP slot lanes are sequentially connected to the PCIe lanes, etc: 7-0, 6-1, 5-2, 4-3

About 5V Power

关于5V供电

OCP规范需要5V辅助供电，目前已知情况如下：
The OCP specification requires a 5V auxiliary power supply. The current known situation is as follows:

• 不需要5V
  Don't need 5V

  • intel X540

• 需要5V，但5V电路元器件与12V一致，可以直接与12V连接
  5V is required, but the 5V circuit components are consistent with 12V and can be directly connected to 12V

  • Mellanox MCX341A
  • Mellanox MCX342A

• 必须提供稳定的5V供电
  Must provide stable 5V power

  • 未知 / Uknown