- 您现在的位置：买卖IC网 > PDF目录4578 > IDT88P8344BHGI (IDT, Integrated Device Technology Inc)IC SPI3-SPI4 EXCHANGE 820-PBGA PDF资料下载
参数资料
| 型号： | IDT88P8344BHGI |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 18/98页 |
| 文件大小： | 0K |
| 描述： | IC SPI3-SPI4 EXCHANGE 820-PBGA |
| 标准包装： | 24 |
| 系列： | * |
| 其它名称： | 88P8344BHGI |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页当前第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页
25
IDT88P8344 SPI EXCHANGE 4 x SPI-3 TO SPI-4
INDUSTRIALTEMPERATURERANGE
APRIL 10, 2006
4.1 SPI-3 to SPI-4 datapath and flow control
Four packet fragment processor modules from SPI-3 to SPI-4 are provided.
One packet fragment processor module is associated with one SPI-3 ingress
interface. All four packet fragment processor modules connect to a single SPI-
4interface.
PacketfragmentsfromtheSPI-3ingressarereceivedintotheSPI-3ingress
portbuffers.Apacketfragmentprocessortransferscompletepacketfragments
from the SPI-3 ingress port buffers to memory segments previously reserved
on a per-LP basis in the buffer segment pool. The SPI-3 ingress port buffer
watermarkandtheper-LPfreebuffersegmentthresholdinformationiscombined
to produce SPI-3 ingress FIFO status towards the attached device. Packets or
packet fragments received on one SPI-3 ingress logical port can be forwarded
to any one of:
A logical port on the egress SPI-4 interface.
A logical port on an associated SPI-3 interface (between physical port
interfaces A and B, and between C and D only).
The microprocessor interface, using the capture buffer.
Theconnectiononthelogicalportlevelisperformedthroughanintermediate
mapping to a Link Identification number (LID).
Figure 13. SPI-3 ingress to SPI-4 egress packet fragment processor
6370 drw27
buffer segment pool
PMON & DIAG
SPI3 egress port
buffers
uP
Associated
egress PFP
capture
buffer
SPI-3
redirect
buffers
uP
insert buffer
SPI3 Ingress
SPI4 Egress
FIFO status
SPI3 ingress port
buffers
SPI-3 ingress PFP functions
Thepacket fragmentprocessor(PFP)receivesstatusinformationaboutthe
SPI-3ingressbuffersandthemicroprocessorinsertbuffer.ThePFPprocesses
SPI-3 ingress buffers in high priority and the insert buffer with low priority. The
PFP copies data into the buffer segment , requests new buffer segments, and
generates entries in the SPI4-egress queue.
SPI-3 ingress buffer processing
The PFP verifies whether a SPI-3 ingress buffer is occupied. If the SPI-3
ingress buffer is not occupied the PFP processes the insert buffer.
Normal operation
Inloopbackmode,alloftheSPI-3ingressbuffersofaphysicalSPI-3portare
copied into the SP-3 egress buffers of that same port. This is a test mode only,
as no non-loopback traffic can be transferred at this time.
In non – loop back mode (normal operation) the SPI-3 ingress buffers are
forwarded to the LID process by the PFP.
TheLIDprocessgeneratesasetofeventsforanassociatedLID.Theevents
that are directed towards the PMON&DIAG module are:
SPI-3 error tagged packet event (errored packets)
SPI-3 EOP event (all packets)
SPI-3 fragment event (all fragments) with an associated length field
相关PDF资料 |
PDF描述 |
|---|---|
| ESM44DRAS | CONN EDGECARD 88POS R/A .156 SLD |
| ASM28DSAS | CONN EDGECARD 56POS R/A .156 SLD |
| ESC60DRTN-S93 | CONN EDGECARD 120PS DIP .100 SLD |
| ESC60DRTH-S93 | CONN EDGECARD 120PS DIP .100 SLD |
| MIC5232-3.3YML TR | IC REG LDO 3.3V 10MA 6-MLF |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IDT88P8344BHI | 功能描述:IC SPI3-SPI4 EXCHANGE 820-PBGA RoHS:否 类别:集成电路 (IC) >> 专用 IC 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA（27x27） 包装:散装 |
| IDT89H10T4BG2ZBBC | 制造商:Integrated Device Technology Inc 功能描述:IC PCI SW 10LANE 4PORT 324BGA |
| IDT89H10T4BG2ZBBC8 | 制造商:Integrated Device Technology Inc 功能描述:IC PCI SW 10LANE 4PORT 324BGA |
| IDT89H10T4BG2ZBBCG | 功能描述:IC PCI SW 10LANE 4PORT 324BGA RoHS:是 类别:集成电路 (IC) >> 专用 IC 系列:PRECISE™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA（27x27） 包装:散装 |
| IDT89H10T4BG2ZBBCG8 | 制造商:Integrated Device Technology Inc 功能描述:IC PCI SW 10LANE 4PORT 324BGA |
发布紧急采购，3分钟左右您将得到回复。