- 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： | 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)： | 12/42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頁當前第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
LXT914
—
Flexible Quad Ethernet Repeater
12
Datasheet
Table 6. LXT914 Miscellaneous Control Signal Descriptions
PLCC
PQFP
Symbol
I/O
Description
19
18
TEST
I
Test Mode Select.
This pin must be tied Low for normal operation.
20
19
RESET
I
RESET.
This pin resets the LXT914 circuitry when pulled High for
≥
1 ms.
21
21
DSQE
(Local)
I
DSQE.
In Local Mode, this pin controls the SQE function. When High, the
SQE function of the AUI port is disabled. When Low, SQE is enabled.
SECTP1
(External)
I
Security Mode Select (TP Port 1).
In External Mode, this pin enables the
security mode for twisted-pair port 1. When pulled High, the LXT914 Jams
the port. This pin must be tied Low if external security control is not
required.
22
23
24
22
23
24
SECTP2
SECTP3
SECTP4
(External)
I
I
I
Security Mode Select (TP Ports 2–4).
In External Mode, these pins
enable the security mode for the respective twisted-pair ports (TP1 through
TP4). When pulled High, the LXT914 jams the affected port. The SEC pins
must be tied Low if external security control is not required.
25
25
FPS
(Local)
I
First Position Select.
In the Local mode this pin identifies the first device
in a daisy chain configuration. When tied High (First position), the LXT914
controls the local EEPROM by providing clock and handshaking. When tied
Low (Not First), the LXT914 will accept CLK and data in its turn from
previous LXT914s in the data chain.
SECAUI
(External)
I
Security Mode Select (AUI Port).
In the External mode this pin enables
the security mode for the AUI port. When pulled High, the LXT914 jams the
AUI port. The security feature is available only in External management
mode.
Table 7. LXT914 LED Driver Signal Descriptions
PLCC
PQFP
Symbol
I/O
Description
27
32
LEDCF
O
Collision & FIFO Error LED Driver.
This tri-state LED driver pin reports
collisions and FIFO errors. It pulses Low to report collisions, and pulses
High to report FIFO errors. When this pin is connected to the anode of one
LED and to the cathode of a second LED, the LXT914 will simultaneously
monitor and report both conditions independently.
28
33
LEDJM
O
Jabber/MJLP & Manchester Code Violation LED Driver.
This tri-state
LED driver pin reports jabber and code violations. It pulses Low to report
MAU Jabber Lockup Protection (MJLP), and pulses High to report
Manchester code violations. When this pin is connected to the anode of
one LED and to the cathode of a second LED, the LXT914 will
simultaneously monitor and report both conditions independently.
29
30
31
32
34
35
36
37
LEDTP1
LEDTP2
LEDTP3
LEDTP4
O
O
O
O
Twisted-Pair Port LED Drivers.
These tri-state LED drivers use an
alternating pulsed output to report TP port status. Each pin should be tied to
a pair of LEDs (to the anode of one LED and the cathode of a second LED).
When connected this way, each pin reports five separate conditions
(receive, transmit, link integrity, reverse polarity and auto partition).
33
38
LEDAUI
O
AUI Port LED Driver.
This tri-state LED driver uses an alternating pulsed
output to report AUI port status. This pin should be tied to a pair of LEDs (to
the anode of one LED and the cathode of a second LED). When connected
this way, this pin reports five separate conditions (receive, transmit, receive
jabber, receive collision and auto partition.
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。