- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄369886 > LXT9880HC Controller Miscellaneous - Datasheet Reference PDF資料下載
參數(shù)資料
| 型號： | LXT9880HC |
| 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)： | 30/96頁 |
| 文件大?。?/td> | 1309K |
| 代理商： | LXT9880HC |
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頁當前第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
LXT980/980A Dual-Speed, 5-Port Fast Ethernet Repeater
30
Datasheet
2.1.6
LED Drivers
The LXT980 provides 23 LED drivers:
3 mode-selectable port LED drivers (15 total)
2 segment LED drivers (4 total)
4 global LED drivers
Refer to
Table 8 on page 16
for LED Interface pin assignments and signal descriptions.
2.2
Requirements
2.2.1
Power
The LXT980 has four types of +5V power supply input pins (VCC, VCCV, VCCR, and VCCT).
These inputs may be supplied from a single power supply, although ferrites should be used to filter
the power going to the analog and digital power planes. As a matter of good practice, these supplies
should be as clean as possible. Specific operating recommendations are shown in the Test
Specifications section,
Table 25 on page 59
.
Each supply input should be decoupled to its respective ground. Refer to
Table 9 on page 17
for
power and ground pin assignments, and to
“
Design Recommendations
”
on page 48
.
2.2.2
Clock
A stable, external 25 MHz system clock source (CMOS) is required by the LXT980. This is
connected to the CLK25 pin. Refer to Test Specifications,
Table 26 on page 59
, for clock input
requirements.
2.2.3
Bias Resistor
The LXT980 requires a 22.1 k
, 1% resistor connecting its RBIAS input to ground.
2.2.4
Reset
At power-up, the reset input must be held low until VCC reaches at least 4.5V. An
‘
LS14 or
equivalent should be used to drive reset if there are multiple LXT980 devices (See
Figure 25 on
page 58
).
2.2.5
PROM
An external, auto-incrementing 48-bit PROM can be used for two purposes:
to assign a unique ID to all LXT980s on a board
to support the EPROM-based address arbitration mechanism on the Serial Management
Interface (refer to
page 44
)
相關PDF資料 |
PDF描述 |
|---|---|
| LXT9883HC | LAN HUB CONTROLLER |
| LZ1030M | Common Anode Diode Array |
| LZ1032AD | Interface IC |
| LZ1032AM | Interface IC |
| LZ1032AR | Interface IC |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LXT9883 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Advanced 10/100 Umnmanaged Repeater |
| LXT9883HC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN HUB CONTROLLER |
| LXTON/H0 | 制造商:Red Lion Controls 功能描述:ANNUN LABELS, 1 LPAX LABEL: TON/H 制造商:Red Lion Controls 功能描述:1 LPAX LABEL TON/H |
| LXTON000 | 制造商:Red Lion Controls 功能描述:ANNUNCIATOR LABELS,1 LPAX LABEL: TON 制造商:Red Lion Controls 功能描述:1 LPAX LABEL TON |
| LXU/MIN0 | 制造商:Red Lion Controls 功能描述:ANNUN LABELS, 1 LPAX LABEL: U/MIN 制造商:Red Lion Controls 功能描述:1 LPAX LABEL U/MIN |
發(fā)布緊急采購，3分鐘左右您將得到回復。