- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1962 > PI7C9X20505GPBNDE (Pericom)IC PCIE PACKET SWITCH 256BGA PDF資料下載
參數(shù)資料
| 型號： | PI7C9X20505GPBNDE |
| 廠商： | Pericom |
| 文件頁數(shù)： | 14/81頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PCIE PACKET SWITCH 256BGA |
| 產(chǎn)品變化通告： | Copper Wire Change 26/Sept/2011 |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 系列： | GreenPacket™ |
| 應(yīng)用： | 封裝開關(guān)，5 端口/5 線道 |
| 接口： | PCI Express |
| 封裝/外殼： | 256-BGA |
| 供應(yīng)商設(shè)備封裝： | 256-PBGA（17x17） |
| 包裝： | 托盤 |
| 安裝類型： | 表面貼裝 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁當(dāng)前第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁
PI7C9X20505GP
5Port-5Lane PCI Express Switch
GreenPacket
TM Family
Datasheet
Page 21 of 81
June 2009 – Revision 1.5
Pericom Semiconductor
5.5
TC/VC MAPPING
The 3-bit TC field defined in the header identifies the traffic class of the incoming packets. To enable the
differential service, a TC/VC mapping table at destination port that is pre-programmed by system software or
EEPROM pre-load is utilized to cast the TC labeled packets into the desired virtual channel. Note that TC0 traffic is
mapped into VC0 channel by default. After the TC/VC mapping, the receive block dispatches the incoming request,
completion, or data into the appropriate VC0 and VC1 queues.
5.6
QUEUE
In PCI Express, it defines six different packet types to represent request, completion, and data. They are respectively
Posted Request Header (PH), Posted Request Data payload (PD), Non-Posted Request Header (NPH), Non-Posted
Data Payload (NPD), Completion Header (CPLH) and Completion Data payload (CPLD). Each packet with
different type would be put into a separate queue in order to facilitate the following ordering processor. Since NPD
usually contains one DW, it can be merged with the corresponding NPH into a common queue named NPHD.
Except NPHD, each virtual channel (VC0 or VC1) has its own corresponding packet header and data queue. When
only VC0 is needed in some applications, VC1 can be disabled and its resources assigned to VC0 by asserting
VC1_EN (Virtual Channel 1 Enable) to low.
5.6.1
PH
PH queue provides TLP header spaces for posted memory writes and various message request headers. Each header
space occupies sixteen bytes to accommodate 3 DW or 4 DW headers. There are two PH queues for VC0 and VC1
respectively.
5.6.2
PD
PD queue is used for storing posted request data. If the received TLP is of the posted request type and is determined
to have payload coming with the header, the payload data would be put into PD queue. There are two PD queues for
VC0 and VC1 respectively.
5.6.3 NPHD
NPHD queue provides TLP header spaces for non-posted request packets, which include memory read, IO read, IO
write, configuration read, and configuration write. Each header space takes twenty bytes to accommodate a 3-DW
header, s 4-DW header, s 3-WD header with 1-DW data, and a 4-DW header with 1-DW data. There is only one
NPHD queue for VC0, since non-posted request cannot be mapped into VC1.
5.6.4 CPLH
CPLH queue provides TLP header space for completion packets. Each header space takes twelve bytes to
accommodate a 3-DW header. Please note that there is no 4-DW completion headers. There are two CPLH queues
for VC0 and VC1 respectively.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PI7C9X20508GPBNDE | IC PCIE PACKET SWITCH 256BGA |
| PI7C9X440SLBFDE | IC PCIE-TO-USB 2.0 CTRLR 128LQFP |
| PI7C9X442SLBFDE | IC PCIE-TO-USB2.0 SWIDGE 128LQFP |
| PI7C9X7952AFDE | IC PCIE-TO-UART BRIDGE 128LQFP |
| PI7C9X7954AFDE | IC PCIE-TO-UART BRIDGE 128LQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI7C9X20508GPANDE | 制造商:Pericom Semiconductor Corporation 功能描述:5-PORT, 8-LANE, GREENPACKET- PCIE PACKET SWITCH - Rail/Tube |
| PI7C9X20508GPBEVB | 制造商:Pericom Semiconductor Corporation 功能描述:EVAL BOARD - Boxed Product (Development Kits) |
| PI7C9X20508GPBNDE | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 5port 8lane PCIe PacketSwitch RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| PI7C9X20508GPNDE | 制造商:Pericom Semiconductor Corporation 功能描述:5-PORT, 8-LANE, GREENPACKET- PCIE PACKET SWITCH - Trays |
| PI7C9X2G303ELAEVB | 制造商:Pericom Semiconductor Corporation 功能描述:Switch IC Development Tools Eval Kit for PI7C9X2G303ELA |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。