- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄369886 > LXT914PE LAN HUB CONTROLLER PDF資料下載
參數(shù)資料
| 型號(hào)： | LXT914PE |
| 英文描述： | LAN HUB CONTROLLER |
| 中文描述： | 局域網(wǎng)集線器控制器 |
| 文件頁數(shù)： | 21/42頁 |
| 文件大?。?/td> | 561K |
| 代理商： | LXT914PE |
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頁當(dāng)前第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
Flexible Quad Ethernet Repeater
—
LXT914
Datasheet
21
2.5
10BASE-T Port Operation
2.5.1
10BASE-T Reception
Each LXT914 10BASE-T port receiver acquires data packets from its twisted-pair input (TPDIP/
TPDIN). An internal RC filter and an intelligent squelch function discriminate noise from link test
pulses and valid data streams. The receive function is activated only by valid data streams (above
the squelch level and with proper timing). If the differential signal at the DI circuit inputs falls
below 75% of the threshold level (unsquelched) for eight bit times (typical), the port receiver enters
the idle state.
Table 11. Packet Status Register Bit Assignments
Register
D7
D6
D5
D4
D3
D2
D1
D0
PSR(0)
COL2
COL1
COLA
RX4
RX3
RX2
RX1
RXA
PSR(1)
PR2
PR1
LLS4
LLS3
LLS2
LLS1
COL4
COL3
PSR(2)
SPA
AP4
AP3
AP2
AP1
APA
PR4
PR3
PSR(3)
LP3
LP2
LP1
LPA
SP4
SP3
SP2
SP1
PSR(4)
RXJABA
MJLP
LCOL4
LCOL3
LCOL2
LCOL1
LCOLA
LP4
PSR(5)
RES
RXCOL
MANCV
FIFOER
RXJAB4
RXJAB3
RXJAB2
RXJAB1
Table 12. Packet Status Register Bit Definitions
Bit
Definition
RX
x
Received Packet on Twisted-Pair Port 1-4 or on AUI Port
COL
x
Transmit Collision of Twisted -Pair Port 1-4 or on AUI Port
LLSC
x
Link Loss State on Twisted-Pair Port 1-4 or on AUI Port
PR
x
Polarity reversed on Twisted-Pair Port 1-4 or on AUI Port
AP
x
Auto-Partition circuit isolated Twisted-Pair Port 1-4 or the AUI Port
SP
x
Short Packet (less than 74 bits) on Twisted-Pair Port 1-4 or on AUI Port
LP
x
Long Packet (more than 1.3 ms) on Twisted-Pair Port 1-4 or on AUI Port
LCOL
x
Late Collision on Twisted-Pair Port 1-4 or on AUI Port
MJLP
MAU Jabber Lockup Protection
RXJAB
x
Receive Jabber Lockup Protection
FIFOER
FIFO overflow/underflow
MANCV
Manchester Code Violation
RXCOL
Receive Collision on the AUI Port
RES
Reserved. Not used
The notation ABCD
x
means bit ABCD associated with port
x
, which can be any of the four Twisted-Pair
Ports or the AUI Port.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LXT914QE | LAN Transceiver |
| LXT916QC | LAN Transceiver |
| LXT917QC | LAN Transceiver |
| LXT9784BC | LAN TRANSCEIVER|OCTAL|BGA|324PIN|PLASTIC |
| LXT9784BE | LAN TRANSCEIVER|OCTAL|BGA|324PIN|PLASTIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXT914QC | 制造商:LEVEL ONE 功能描述: |
| LXT914QE | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Transceiver |
| LXT915 | 制造商:LVL1 制造商全稱:LVL1 功能描述:Simple Quad Ethernet Repeater |
| LXT915QC | 制造商:LEVEL ONE 功能描述:LAN HUB CONTROLLER, 64 Pin, QFP |
| LXT916 | 制造商:LVL1 制造商全稱:LVL1 功能描述:Multi-Port Hub Repeaters for Managed 10BASE-T Applications |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。