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參數(shù)資料
| 型號： | 9863 |
| 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)： | 11/56頁 |
| 文件大?。?/td> | 719K |
| 代理商： | 9863 |
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Advanced 10/100 Unmanaged Repeater
—
LXT9883/9863
Datasheet
Document #: 249115
Revision #: 003
Rev. Date: 08/07/01
11
Table 3. Inter-Repeater Backplane Signal Descriptions
Pin
Symbol
Type
1, 2
Description
Common IRB Signals
39
COMP_SEL
AI
Compatibility Mode Select.
3.3V on this pin causes the IRCFSBP signals to operate in
3.3V only mode. 5V on this pin causes the IR100CFSBP or IR10CFSBP signals to
operate in 5V backwards compatibility mode with LXT98x devices.
100 Mbps IRB Signals
36
IR100CFS
3
A I/O
OD
100 Mbps IRB Collision Force Sense.
A
three-level signal that determines number of
active ports on the
“
logical
”
repeater. High level (3.3V) indicates no ports active; Mid
level (approx. 1.6V) indicates one port active; Low level (0V) indicates more than one
port active, resulting in a collision. This signal requires a 215
pull-up resistor, and
connects between ICs on the same board.
37
IR100CFSBP
A I/O
OD
100 Mbps IRB Collision Force Sense - Backplane.
This three-level signal functions
the same as IR100CFS; however, it connects between ICs with FPS = 0, on different
boards. IR100CFSBP requires a single 91
pull-up resistor in each stack. This signal
can be set in either 5V or 3.3V modes by the COMP_SEL pin.
38
IR100SNGL
I/O
Schmitt PU
100 Mbps Single Driver State.
This active Low signal is asserted by the device with
FPS = 0 when a packet is received from one or more ports. Do not connect this signal
between boards.
40
IR100COL
I/O
Schmitt PU
100 Mbps Multiple Driver State.
This active Low signal is asserted by the device with
FPS = 0 when a packet is being received from more than one port (collision). Do not
connect this signal between boards.
41
IR100DEN
O
OD
100 Mbps IRB Driver Enable.
This output provides directional control for an external
bidirectional transceiver (74LVT245) used to buffer the 100 Mbps IRB in multi-board
applications. It must be pulled up by a 330
resistor. When there are multiple devices
on one board, tie all IR100DEN outputs together. If IR100DEN is tied directly to the DIR
pin on a 74LVT245, attach the on-board IR100DAT, IR100CLK, and IR100DV signals to
the
“
B
”
side of the 74LVT245, and connect the off-board signals to the
“
A
”
side of the
74LVT245.
42
IR100DV
I/O
Schmitt
OD
PU
100 Mbps IRB Data Valid.
This active Low signal indicates port activity on the
repeater. IR100DV frames the clock and data of the packet on the backplane. This
signal requires a 300
pull-up resistor.
43
44
45
48
49
IR100DAT0
IR100DAT1
IR100DAT2
IR100DAT3
IR100DAT4
I/O
Tri-state
Schmitt
PU
100 Mbps IRB Data.
These bidirectional signals carry 5-bit data on the 100 Mbps IRB.
Data is driven on the falling edge and sampled on the rising edge of IR100CLK. Buffer
these signals between boards.
50
IR100CLK
I/O
Tri-state
Schmitt
PD
100 Mbps IRB Clock.
This bidirectional, non-continuous, 25 MHz clock is recovered
from received network traffic. Schmitt triggering is used to increase noise immunity. This
signal must be pulled to VCC when idle. One 1 k
pull-up resistor on both sides of a
74LVT245 buffer is recommended.
1. I = Input, O = Output, I/O = Input/Output, D = Digital, AI = Analog Input, A I/O = Analog Input/Output, OD = Open Drain,
OS = Open Source, PD = Pull Down, PU = Pull Up. Even if the IRB is not used, required pull-up resistors must be installed as
listed above.
NC = No Clamp. Pad does not clamp input in the absence of power.
2. Pins are 5V tolerant, unless indicated.
3. IR100CFS is
not
5V tolerant.
4. IR10CFS is
not
5V tolerant.
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| 9863.22 | 制造商:Schurter Electronic Components 功能描述:TRANSIPILLAR STYLE 2 M6 制造商:Schurter Electronic Components 功能描述:TRANSIPILLAR, STYLE 2, M6 制造商:Schurter Electronic Components 功能描述:TRANSIPILLAR, STYLE 2, M6; Overall Length:32mm; Thread Size - Metric:M6; Spacer Material:Nylon 6.6 (Polyamide 6.6); SVHC:No SVHC (19-Dec-2012); External Diameter:16mm; External Length / Height:44.5mm; Fastener Material:Nylon 6.6 ;RoHS Compliant: Yes |
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