首页 > 数据 高频线缆
[问题求助] UDI 线缆结构有谁知道?
P:2007-02-23 10:01:35
7
李小龍:
larryhe:
李小龍:
樓上的,這個是標準的UDI規格?
為甚麼UDI增加了一對線,原因應該是新增功能 Micro-USB的強大功能,4對線根本就是錯誤的
私人建议兄台去阅读一下UDI的标准再说吧,里面应该有一个PIN的定义的!呵呵
標準我早就拿到了,而且線材有送到台灣去測試了,
不知道你怎麼定義呢?
我们就是根据标准定义的,兄台所说的是7芯又是如何定义?5对又做何理解?
7.2.2.3 Cable
The specific cable construction is up to each connector and cable assembly manufacturer, as long as the
UDI connectors and cable assemblies meet all the electrical, mechanical, and reliability performance
requirements.
The following are some descriptions regarding the UDI cable:
There are total 16 wires in a UDI-to-UDI cable assembly with 4 differential pairs for UDI data and
reference clock. Each differential pair shall be shielded with a drain wire electrically attached to
the shield.
The choice of wire gauge is up to each connector and cable manufacturer. Smaller gauge wire is
preferred for cable flexibility, but larger gauge wire incurs less loss. A wire gauge from 30 to
26 AWG is expected for the high-speed differential pairs.
This specification does not explicitly define the cable length. A UDI cable is allowed to have any
length, as long as the cable meets the cable assembly system electrical requirements defined in
Section 7.2.3.1. Note that in this specification, a cable assembly system includes a cable我相信只要懂英语的都知道这个是什么意思,因为介定不一定就是标准,但我想至于UDI的跳线至少应该保持这个结构吧!所谓5对的说话真的好难让人接受!三基色信道再加上时钟这是数位必定的格式,我就不晓得你的5对多一对是拿来做什么的?UDI的数据宽度一样是10位,多一个信道实在是说不过去的!
cableletter - 电缆电报 (0) 投诉
16
