Taw qhia rau PCIe 5.0 specifications

• Taw qhia rau PCIe 5.0 specifications

PCIe 4.0 specification tau ua tiav hauv 2017, tab sis nws tsis tau txais kev txhawb nqa los ntawm cov neeg siv khoom siv kom txog rau thaum AMD's 7nm Rydragon 3000 series, thiab yav dhau los tsuas yog cov khoom xws li supercomputing, enterprise-chav kawm high-speed cia, thiab cov khoom siv network siv PCIe 4.0 thev naus laus zis.Txawm hais tias PCIe 4.0 thev naus laus zis tseem tsis tau siv rau ntawm qhov loj, lub koom haum PCI-SIG tau ntev tau txhim kho PCIe 5.0 sai dua, cov teeb liab tus nqi tau nce ob npaug ntawm 16GT / s tam sim no mus rau 32GT / s, bandwidth tuaj yeem ncav cuag 128GB / s, thiab version 0.9/1.0 specification tau ua tiav.v0.7 version ntawm PCIe 6.0 tus qauv ntawv tau raug xa mus rau cov tswv cuab, thiab kev txhim kho ntawm tus qauv yog nyob rau hauv txoj kev.Tus pin tus nqi ntawm PCIe 6.0 tau nce mus rau 64 GT / s, uas yog 8 npaug ntawm PCIe 3.0, thiab bandwidth hauv x16 raws tuaj yeem loj dua 256GB / s.Hauv lwm lo lus, qhov ceev tam sim no ntawm PCIe 3.0 x8 tsuas yog ib qho PCIe 6.0 channel kom ua tiav.Raws li v0.7 muaj kev txhawj xeeb, PCIe 6.0 tau ua tiav feem ntau ntawm cov yam ntxwv tau tshaj tawm thaum xub thawj, tab sis kev siv hluav taws xob tseem tseem txhim kho ntxiv.d, thiab tus qauv tau qhia tshiab L0p lub zog teeb tsa iav.Tau kawg, tom qab tshaj tawm xyoo 2021, PCIe 6.0 tuaj yeem ua lag luam muaj nyob rau xyoo 2023 lossis 2024 thaum ntxov.Piv txwv li, PCIe 5.0 tau pom zoo hauv 2019, thiab tam sim no tsuas yog muaj cov ntaub ntawv thov

Piv nrog rau cov txheej txheem dhau los, PCIe 4.0 specifications tuaj lig.PCIe 3.0 specifications tau qhia nyob rau hauv 2010, 7 xyoo tom qab kev taw qhia ntawm PCIe 4.0, yog li lub neej ntawm PCIe 4.0 specifications yuav luv luv.Tshwj xeeb, qee tus neeg muag khoom tau pib tsim PCIe 5.0 PHY lub cev txheej txheej.

Lub koom haum PCI-SIG cia siab tias ob tus qauv yuav nyob ua ke rau qee lub sijhawm, thiab PCIe 5.0 feem ntau yog siv rau cov khoom siv ua haujlwm siab nrog cov kev xav tau ntau dua, xws li Gpus rau AI, cov khoom siv hauv network, thiab lwm yam, uas txhais tau hais tias PCIe 5.0 yog. yuav tshwm sim nyob rau hauv cov ntaub ntawv chaw, network, thiab HPC ib puag ncig.Cov cuab yeej siv nrog tsawg bandwidth xav tau, xws li desktops, tuaj yeem siv PCIe 4.0.

Rau PCIe 5.0, lub teeb liab tus nqi tau nce los ntawm PCIe 4.0′s 16GT/s rau 32GT/s, tseem siv 128/130 encoding, thiab x16 bandwidth tau nce los ntawm 64GB/s mus rau 128GB/s.

Ntxiv nrog rau kev ua ob npaug ntawm qhov bandwidth, PCIe 5.0 coj lwm yam kev hloov pauv, hloov hluav taws xob tsim los txhim kho cov teeb liab kev ncaj ncees, rov qab sib raug zoo nrog PCIe, thiab ntau dua.Tsis tas li ntawd, PCIe 5.0 tau raug tsim los nrog cov qauv tshiab uas txo qis latency thiab teeb liab attenuation nyob ntev.

Lub koom haum PCI-SIG cia siab tias yuav ua kom tiav 1.0 version ntawm qhov tshwj xeeb hauv Q1 xyoo no, tab sis lawv tuaj yeem tsim cov qauv, tab sis lawv tswj tsis tau thaum lub davhlau ya nyob twg yog qhia rau kev ua lag luam, thiab xav tias thawj PCIe 5.0. cov khoom siv yuav nthuav tawm xyoo no, thiab ntau cov khoom yuav tshwm sim hauv 2020. Txawm li cas los xij, qhov xav tau kev nrawm dua tau ua rau tus qauv lub cev los txhais cov tiam tom ntej ntawm PCI Express.Lub hom phiaj ntawm PCIe 5.0 yog txhawm rau nce qhov nrawm ntawm tus qauv hauv lub sijhawm luv tshaj plaws.Yog li ntawd, PCIe 5.0 yog tsim los kom yooj yim nce qhov nrawm rau PCIe 4.0 tus qauv yam tsis muaj lwm yam tseem ceeb tshiab.

Piv txwv li, PCIe 5.0 tsis txhawb PAM 4 cov cim qhia thiab tsuas yog suav nrog cov yam ntxwv tshiab uas xav tau los ua kom tus qauv PCIe txhawb 32 GT / s hauv lub sijhawm luv tshaj plaws.

Hardware kev sib tw

Qhov kev sib tw loj hauv kev npaj cov khoom lag luam los txhawb PCI Express 5.0 yuav cuam tshuam txog qhov ntev ntawm cov channel.Qhov ceev ntawm lub teeb liab tus nqi, qhov ntau dua cov cab kuj zaus ntawm cov teeb liab kis tau los ntawm PC board.Ob hom kev puas tsuaj rau lub cev txwv qhov twg cov engineers tuaj yeem tshaj tawm cov cim PCIe:

· 1. Kev txo qis ntawm channel

· 2. Reflections uas tshwm sim nyob rau hauv lub channel vim impedance discontinuities nyob rau hauv pins, connectors, los ntawm-qhov thiab lwm yam qauv.

PCIe 5.0 specification siv raws nrog -36dB attenuation ntawm 16 GHz.Qhov zaus 16 GHz sawv cev rau Nyquist zaus rau 32 GT / s digital signals.Piv txwv li, thaum lub teeb liab PCIe5.0 pib, nws yuav muaj qhov nruab nrab ntawm qhov nruab nrab ntawm 800 mV.Txawm li cas los xij, tom qab dhau los ntawm qhov pom zoo -36dB channel, ib qho zoo ib yam li qhov qhib qhov muag ploj.Tsuas yog los ntawm kev siv lub tshuab xa hluav taws xob raws li kev sib npaug (de-accentuating) thiab cov neeg txais kev sib npaug (kev sib xyaw ntawm CTLE thiab DFE) tuaj yeem ua rau PCIe5.0 teeb liab dhau los ntawm lub kaw lus channel thiab raug txhais los ntawm tus txais.Qhov tsawg kawg nkaus qhov muag qhov siab ntawm PCIe 5.0 teeb liab yog 10mV (post-equalization).Txawm tias muaj qhov ze-zoo meej low-jitter transmitter, qhov tseem ceeb ntawm cov channel txo cov teeb liab amplitude mus rau qhov chaw uas lwm yam teeb liab puas tshwm sim los ntawm kev xav thiab crosstalk tuaj yeem raug kaw los kho qhov muag.