RM新时代网站-首页

0
  • 聊天消息
  • 系統(tǒng)消息
  • 評論與回復(fù)
登錄后你可以
  • 下載海量資料
  • 學(xué)習(xí)在線課程
  • 觀看技術(shù)視頻
  • 寫文章/發(fā)帖/加入社區(qū)
會員中心
創(chuàng)作中心

完善資料讓更多小伙伴認識你,還能領(lǐng)取20積分哦,立即完善>

3天內(nèi)不再提示

DPHY在high-speed模式下有雙向傳輸?shù)墓δ軉幔?/h1>

DPHY在high-speed模式下有雙向傳輸?shù)墓δ軉??我看dphy的協(xié)議里有這么兩段描述,不太理解什么意思?

aa3f2620-f0fd-11ee-a297-92fbcf53809c.png

答:一個通用的Lane中包含LP-TX、LP-RX、HS-TX、HS-RX和LP-CD模塊,所有收發(fā)模塊均共用同一個差分線Dp,Dn(在LP模式下,為兩根單獨的信號線)。整個Lane通過PPI接口(PHY Protocol Interface)與系統(tǒng)的其他部分連接。

aa58f834-f0fd-11ee-a297-92fbcf53809c.png

D-PHY中一共有三種Lane,Unidirectional Clock Lane、Unidirectional Data Lane以及Bi-directional Data Lane。針對Bi-directional Data Lane是可以支持HS的turnaround的,也可以是支持LP的turnaround的。

TX端反轉(zhuǎn)數(shù)據(jù)通信方向請求(Turnaround):LP11→LP10→LP00→LP10→LP00;

隨后,等待一段時間后,RX端接管,并切換為TX端發(fā)送:LP00→LP10→LP11,切換完成。如下圖所示:

aa75dff8-f0fd-11ee-a297-92fbcf53809c.png

注意,HS模式下,為差分信號傳輸,信號電平在100mV~300mV(200mV的壓擺);LP模式下,為單端信號傳輸,信號電平在0~1.2V(1.2V壓擺)。HS模式下,信號傳輸速度可達80Mbps~1Gbps(v1.0)或80Mbps~1.5Gbps(v1.1),

HS模式有時也被稱為Busrt Mode,Low Power Mode包括Control Mode和Escape Mode。

注意,Burst Mode和Escape Mode之間不可以直接來回切換,必須通過Control Mode進行中轉(zhuǎn),即:Burst Mode <-> Control Mode <-> Escape Mode。


審核編輯:劉清
聲明:本文內(nèi)容及配圖由入駐作者撰寫或者入駐合作網(wǎng)站授權(quán)轉(zhuǎn)載。文章觀點僅代表作者本人,不代表電子發(fā)燒友網(wǎng)立場。文章及其配圖僅供工程師學(xué)習(xí)之用,如有內(nèi)容侵權(quán)或者其他違規(guī)問題,請聯(lián)系本站處理。 舉報投訴
  • 數(shù)據(jù)通信
    +關(guān)注

    關(guān)注

    2

    文章

    431

    瀏覽量

    33754
  • 信號線
    +關(guān)注

    關(guān)注

    2

    文章

    171

    瀏覽量

    21462
  • PHY
    PHY
    +關(guān)注

    關(guān)注

    2

    文章

    301

    瀏覽量

    51732
  • 信號傳輸
    +關(guān)注

    關(guān)注

    4

    文章

    423

    瀏覽量

    20176
  • 差分線
    +關(guān)注

    關(guān)注

    0

    文章

    37

    瀏覽量

    8904

原文標(biāo)題:注意,DPHY在HS模式下的雙向傳輸

文章出處:【微信號:全棧芯片工程師,微信公眾號:全棧芯片工程師】歡迎添加關(guān)注!文章轉(zhuǎn)載請注明出處。

收藏 人收藏

    評論

    相關(guān)推薦

    High-Speed Circuit Board Signa

    High-Speed Circuit Board Signal Integrity:Characteristics and Construction of Printed Wiring Boards
    發(fā)表于 02-17 10:21 ?0次下載
    <b class='flag-5'>High-Speed</b> Circuit Board Signa

    High-Speed Interconnect -高速接口I

    業(yè)界功能最為齊全的高速接口IC產(chǎn)品線-High-Speed Interconnect (8th edition)
    發(fā)表于 03-23 21:36 ?15次下載

    High-speed Digital Design - Jo

    High-speed Digital Design - Johnson & Graham.pdf
    發(fā)表于 04-23 23:19 ?0次下載
    <b class='flag-5'>High-speed</b> Digital Design - Jo

    High-Speed Differential Signal

    High-Speed Differential Signaling in Cyclone Devices From high-speed backplane applications
    發(fā)表于 05-14 10:42 ?21次下載

    High-Speed Audio Ripping,Encod

    High-Speed Audio Ripping,Encoding and Playback: Entertainment Systems Get a Makeover:The way
    發(fā)表于 09-30 20:00 ?28次下載

    TJA1051 High-speed CAN transce

    The TJA1051 is a high-speed CAN transceiver that provides an interface between aController Area
    發(fā)表于 11-10 13:43 ?21次下載

    TJA1042 High-speed CAN transce

    The TJA1042 is a high-speed CAN transceiver that provides an interface between aController Area
    發(fā)表于 11-10 13:47 ?51次下載

    High-Speed Board Design Techni

    High-Speed Board Design TechniquesThe most important factor in the design of many systems today
    發(fā)表于 11-22 19:48 ?20次下載

    TLC5540: 8-Bit High-Speed Anal

    The TLC5540 is a high-speed, 8-bit analog-to-digital converter (ADC) that converts at sampling
    發(fā)表于 06-02 09:01 ?18次下載

    Clamp function of high-speed A

    IntroductionThe THS1041 from Texas Instruments (TI) is a 10-bit, 40-MSPS, CMOS high-speed
    發(fā)表于 06-06 17:03 ?5次下載

    TSW1250EVM: High-Speed LVDS De

    The TSW1250 includes a High-Speed LVDS Deserializer and Analysis System which provide
    發(fā)表于 06-12 09:41 ?10次下載

    PGA870,pdf(High-Speed, Fully D

    The PGA870 is a wideband programmable-gain amplifier (PGA) for high-speed signal chain and data
    發(fā)表于 09-18 23:49 ?27次下載

    High-Speed ADC Sets Input Comm

    receivers that include baseband-sampling, high-speed ADCs. A VCM is especially important for single-supply, low-voltage circuits with DC-couple
    發(fā)表于 04-16 16:46 ?589次閱讀
    <b class='flag-5'>High-Speed</b> ADC Sets Input Comm

    High-speed Digital Design 中文版

    電子發(fā)燒友網(wǎng)站提供《High-speed Digital Design 中文版.txt》資料免費下載
    發(fā)表于 05-03 16:08 ?0次下載

    MAX22195: High-Speed, Octal, Industrial Digital Input with Parallel Output Data Sheet MAX22195: High-Speed, Octal, Industrial Digital Input

    電子發(fā)燒友網(wǎng)為你提供ADI(ADI)MAX22195: High-Speed, Octal, Industrial Digital Input with Parallel Output Data
    發(fā)表于 10-17 19:15
    MAX22195: <b class='flag-5'>High-Speed</b>, Octal, Industrial Digital Input with Parallel Output Data Sheet MAX22195: <b class='flag-5'>High-Speed</b>, Octal, Industrial Digital Input

    RM新时代网站-首页