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9883 Datasheet(PDF) 31 Page - Intel Corporation

Part # 9883
Description  Advanced 10/100 Umnmanaged Repeater
PDF  56 Pages
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

9883 Datasheet(HTML) 31 Page - Intel Corporation

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Advanced 10/100 Unmanaged Repeater — LXT9883/9863
Datasheet
31
Document #: 249115
Revision #: 003
Rev. Date: 08/07/01
3.8
MII Port Operation
The LXT98x3 MII ports allow direct connection with a MAC. The MII ports can operate at either
10 Mbps or 100 Mbps. Speed control is provided via MIIn_SPD. For 100 Mbps operation, set
MIIn_SPD = 1. For 10 Mbps operation, set MIIn_SPD = 0.
3.8.1
Preamble Handling
When operating at 100 Mbps, the LXT98x3 passes the full 56 bits of preamble through before
sending the SFD. When operating at 10 Mbps, the LXT98x3 sends data across the MII starting
with the 8-bit SFD (no preamble bits).
Table 16. IRB Signal Details
Name
Pad Type
Buffer
Pull-up
Connection Type
100 Mbps IRB Signals
IR100DAT<4:0>
Digital
Yes
No
Full
IR100CLK
Digital
Yes
1K
Full
IR100DV
Digital, Open Drain
Yes
300
Ω
Full
IR100CFS
Analog
No
215
Ω, 1%
Local
IR100CFSBP
Analog
No
91
Ω, 1%
Stack
IR100COL
Digital
No
No
Local
IR100SNGL
Digital
No
No
Local
IR100DEN
Digital, Open Drain
N/A1
330
Ω
Local
10 Mbps IRB Signals
IR10DAT
Digital, Open Drain
Yes
330
Ω
Full
IR10CLK
Digital
Yes
No
Full
IR10ENA
Digital, Open Drain
Yes
330
Ω
Full
IR10CFS
Analog
No
215
Ω, 1%
Local
IR10CFSBP
Analog
No
330
Ω, 1%
Stack
IR10COL
Digital
No
330
Ω, 1%
Local
IR10COLBP
Digital
No
330
Ω, 1%
Stack
IR10DEN
Digital, Open Drain
N/A
1
330
Ω
Local
1. Driver Enable signals are provided to control an external bidirectional transceiver.



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