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參數(shù)資料
| 型號： | 9883 |
| 廠商： | Intel Corp. |
| 英文描述： | Advanced 10/100 Umnmanaged Repeater |
| 中文描述： | 高級10/100 Umnmanaged直放站 |
| 文件頁數(shù)： | 21/56頁 |
| 文件大?。?/td> | 719K |
| 代理商： | 9883 |
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Advanced 10/100 Unmanaged Repeater
—
LXT9883/9863
Datasheet
Document #: 249115
Revision #: 003
Rev. Date: 08/07/01
21
Each supply input should be decoupled to ground. Refer to
Table 6 on page 15
for power and
ground pin assignments, and to the
"General Design Guidelines
”
on page 32.
.
3.5.2
Clock
A stable, external 25MHz reference clock source (TTL) is required to the CLK25 pin. The
reference clock is used to generate transmit signals and recover receive signals. A crystal-based
clock is recommended over a derived clock (i.e., PLL-based) to minimize transmit jitter. Refer to
Table 18 on page 37
for a list of recommended oscillators and to
Table 21 on page 44
for clock
timing requirements.
3.5.3
Bias Resistor
The RBIAS input requires a 22.1 k
, 1% resistor connected to ground.
3.5.4
Reset
At power-up, the reset input must be held Low until VCC reaches at least 3.15V. A buffer should be
used to drive reset if there are multiple LXT98x3 devices. The clock must be active.
3.5.5
IRB Bus Pull-ups
Even when the LXT98x3 is used in a stand-alone configuration, pull-up resistors are required on
the IRB signals. See
Figure 16
and
Figure 17 on page 43
.
3.6
LED Operation
The LXT98x3 drives the most commonly used LEDs directly (see
"Direct Drive LEDs
”
on
page 24.
). The less frequently used LEDs are optionally driven via a serial bus to inexpensive
Serial-to-Parallel devices (see
“
Serial LEDs
”
on this page).
3.6.1
LEDs at Start-up
For approximately 2 seconds after the LXT98x3 is reset, all LEDs are driven to the ON state. This
start-up routine is an LED check.
100 Mbps IRB
10 Mbps IRB
IR100CFS
IR10DAT
IR100CFSBP
IR10ENA
IR100DV
IR10COL
IR100CLK
IR10CFS
IR10COLBP
IR10CFSBP
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| 9883 010500 | 功能描述:多芯電纜 20AWG 3PR SHIELD 500ft SPOOL BLACK RoHS:否 制造商:Alpha Wire 導體數(shù)量:3 線規(guī) - 美國線規(guī)（AWG）:16 絞合:19 x 29 屏蔽:Shielded 長度:100 ft 電壓額定值:600 V 外殼材料:Polytetrafluoroethylene (PTFE) 絕緣材料:Polytetrafluoroethylene (PTFE) 類型:Communication and Control |
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