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參數資料
| 型號： | L84225 |
| 英文描述： | L84225 100BaseTX/FX/10BaseT Physical Layer Device technical manual 4/02 |
| 中文描述： | L84225 100BaseTX/FX/10BaseT物理層設備的技術手冊，4月2日 |
| 文件頁數： | 41/118頁 |
| 文件大小： | 890K |
| 代理商： | L84225 |
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Functional Description
Copyright 1999-2002 by LSI Logic Corporation. All rights reserved.
41 of 118
April, 2002
2.14.2 10Base-T Link Integrity Algorithm
The L84225 uses the same 10Base-T link integrity algorithm that is
defined in IEEE 802.3 clause 14. This algorithm uses normal link pulses,
referred to as NLP’s and transmitted during idle periods, to determine if
a device has successfully established a link with a remote device (called
Link Pass state). The transmit link pulse meets the template defined in
IEEE 802.3 Clause 14 and shown in
Figure 7
. Refer to IEEE 802.3
Clause 14 for more details if needed.
2.14.3 100Base-TX Link Integrity Algorithm
Since 100Base-TX is defined to have an active idle signal, then there is
no need to have separate link pulses like those defined for 10Base-T.
The L84225 uses the squelch criteria and descrambler synchronization
algorithm on the input data to determine if the device has successfully
established a link with a remote device (called Link Pass state). Refer to
IEEE 802.3 for details on both algorithms.
2.14.4 AutoNegotiation Algorithm
As stated previously, the AutoNegotiation algorithm is used for two
purposes:
To automatically configure the device for either 10/100 Mbps and
Half/Full Duplex modes
To establish an active link to and from a remote device
The AutoNegotiation algorithm is the same algorithm that is defined in
IEEE 802.3 Clause 28. AutoNegotiation uses a burst of link pulses, called
fast link pulses and referred to as FLP’s, to pass up to 16 bits of signaling
back and forth between the L84225 and a remote device. The transmit
FLP pulses meet the template specified in IEEE 802.3 and shown in
Figure 7
. A timing diagram contrasting NLP’s and FLP’s is shown in
Figure 8
.
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相關代理商/技術參數 |
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|---|---|
| L84225/B1 | 制造商:LSI Corporation 功能描述: |
| L8446-04 | 制造商:HAMAMATSU 制造商全稱:Hamamatsu Corporation 功能描述:CW LASER DIODES |
| L8446-06 | 制造商:HAMAMATSU 制造商全稱:Hamamatsu Corporation 功能描述:CW LASER DIODES |
| L8446-07 | 制造商:HAMAMATSU 制造商全稱:Hamamatsu Corporation 功能描述:CW LASER DIODES |
| L8446-41 | 制造商:HAMAMATSU 制造商全稱:Hamamatsu Corporation 功能描述:CW LASER DIODES |
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