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參數(shù)資料
| 型號： | LXT972A |
| 廠商： | Intel Corp. |
| 英文描述： | 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet |
| 中文描述： | 3.3雙速快速以太網(wǎng)收發(fā)器數(shù)據(jù)表 |
| 文件頁數(shù)： | 31/70頁 |
| 文件大小： | 833K |
| 代理商： | LXT972A |
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3.3V Dual-Speed Fast Ethernet Transceiver Datasheet
—
LXT972A
Datasheet
31
3.7.2
Collision Indication
Figure 17
shows normal transmission. Upon detection of a collision, the COL output is asserted
and remains asserted for the duration of the collision as shown in
Figure 18
.
3.7.3
100BASE-X Protocol Sublayer Operations
With respect to the 7-layer communications model, the LXT972A is a Physical Layer 1 (PHY)
device. The LXT972A implements the Physical Coding Sublayer (PCS), Physical Medium
Attachment (PMA), and Physical Medium Dependent (PMD) sublayers of the reference model
defined by the IEEE 802.3u standard. The following paragraphs discuss LXT972A operation from
the reference model point of view.
3.7.3.1
PCS Sublayer
The Physical Coding Sublayer (PCS) provides the MII interface, as well as the 4B/5B encoding/
decoding function.
For 100TX operation, the PCS layer provides IDLE symbols to the PMD-layer line driver as long
as TX_EN is de-asserted.
Figure 17. 100BASE-TX Transmission with no Errors
Figure 18. 100BASE-TX Transmission with Collision
DA
DA DA
DA
DA
DA
DA
DA
DA
TX_CLK
TX_EN
TXD<3:0>
CRS
COL
P
R
E
A
M
B
L
E
JAM
TX_CLK
TX_EN
TXD<3:0>
CRS
COL
P
R
E
A
M
B
L
E
JAM
JAM
JAM
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LXT972ALC | 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet |
| LXT972M | Single-Port 10/100 Mbps PHY Transceiver |
| LXT9763 | Fast Ethernet 10/100 Hex Transceiver with Full MII |
| LXT9763HC | LAN TRANSCEIVER|HEX|QFP|208PIN|PLASTIC |
| LXT9784 | Transceiver Hardware Integrity Function Overview |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXT972ALC | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:3.3V Dual-Speed Fast Ethernet Transceiver Datasheet |
| LXT972LCHFB8 | 制造商:LEVEL_ONE 功能描述: |
| LXT972M | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Single-Port 10/100 Mbps PHY Transceiver |
| LXT973QC | 制造商:Intel 功能描述:LAN Transceiver, Dual, 100 Pin, Plastic, QFP |
| LXT974 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Fast Ethernet 10/100 Quad Transceivers |
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