- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370261 > FW82439TX Controller Miscellaneous - Datasheet Reference PDF資料下載
參數(shù)資料
| 型號： | FW82439TX |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項-數(shù)據(jù)表參考 |
| 文件頁數(shù)： | 72/102頁 |
| 文件大?。?/td> | 759K |
| 代理商： | FW82439TX |
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頁當(dāng)前第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頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁
Extended Temperature 82439TX (MTXC) Datasheet
72
PRELIMINARY
Multi-Transaction Timer (MTT)
The priority chain algorithm has been enhanced by the Multi-Transaction Timer (MTT) mechanism. Once a
PCI agent is granted, the MTT is started. This timer then counts down in PCI clocks from its preset value to
zero. Until the timer expires, that agent will be promoted to being the highest priority PCI agent for the next
grant event.
4.8.2.
CPU POLICIES
The CPU never explicitly requests the bus. Instead, the arbiter grants the bus to the CPU when:
The CPU is the highest priority
PCI agents do not require main memory (peer-to-peer transfers or bus idle) and the PCI bus is not
currently locked by a PCI master
When the CPU is granted as highest priority, the MLT timer is used to guarantee a minimum amount of
system resources to the CPU before another requesting PCI agent is granted.
5.0.
CLOCKS AND RESET
5.1.
Clock Generation and distribution
The MTXC and CPU should be clocked from one clock driver output to minimize skew between the CPU
& MTXC.
5.2.
RESET Sequencing
The MTXC is asynchronously reset when the RST# signal is asserted.
The MTXC arbiter includes support for PCI central resource functions. These functions include driving the
AD[31:0],C/BE[3:0]#, and the PAR signals when no one is granted the PCI bus and the PCI bus is idle. The
MTXC drives 0’s on these signals during these times, plus during RESET.
6.0. ELECTRICAL TIMING SPECIFICATIONS
6.1. Absolute Maximum Ratings
Case Temperature under Bias...............................................-40oC to +115oC
Storage Temperature ............................................................-55oC to +150oC
Voltage on 5V tolerant pins with Respect to Ground..............-0.3 to REFVDD5 + 0.3
Voltage on 3.3V pins with Respect to Ground .......................-0.3 to VDD3 + 0.3
Supply Voltage with Respect to Vss......................................-0.3 to +3.6 V
(2.5V CPU) Supply Voltage with Respect to Vss...................-0.2 to +2.7 V
Maximum Power Dissipation.................................................1.0 W
WARNING:
Stressing the device beyond the "Absolute Maximum Ratings" may cause permanent
damage. These are stress ratings only. Operating beyond the "Operating Conditions" is
not recommended and extended exposure beyond "Operating Conditions" may affect
reliability.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FW82815 | Controller Miscellaneous - Datasheet Reference |
| FWA-25A10F | Fuse |
| FWA-30A10F | Fuse |
| FWA-35A21F | Fuse |
| FWA-40A21F | Fuse |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FW82439TX S L28T | 制造商:Intel 功能描述:System Controller 324-Pin BGA |
| FW82439TX S L3BT | 制造商:Intel 功能描述:System Controller |
| FW82439TX S L28T | 制造商:Intel 功能描述: |
| FW82439TX S L3BT | 制造商:Intel 功能描述:System Controller |
| FW82439TXSL28T | 功能描述:IC 82439TX SYS CTRL MTXC 324BGA RoHS:否 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。