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參數資料
| 型號： | LXT970A |
| 廠商： | Intel Corp. |
| 英文描述： | Dual-Speed Fast Ethernet Transceiver |
| 中文描述： | 雙速度快速以太網收發(fā)器 |
| 文件頁數： | 30/74頁 |
| 文件大?。?/td> | 1061K |
| 代理商： | LXT970A |
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LXT970A
—
Dual-Speed Fast Ethernet Transceiver
30
Datasheet
2.4.2.1
Manual Configuration
The LXT970A can be manually configured to force operation in the following modes:
100FX, full-duplex
100FX, half-duplex
100TX, full-duplex
100TX, half-duplex
10T, full-duplex
10T, half-duplex
Refer to
Table 12
through
Table 14
in the Hardware Control Interface discussion for specific
manual configuration settings.
2.4.2.2
Auto-Negotiation/Parallel Detection
With auto-negotiation enabled at power-up or reset, the LXT970A attempts to establish link
operating conditions with its partner by sending Fast Link Pulse (FLP) bursts.
If the link partner is also capable of auto-negotiation, the two devices exchange FLP bursts to
communicate their capabilities to each other. Each side finds the highest common capabilities that
both sides can support and then begins operating in that mode.
If the link partner is not capable of auto-negotiation, it transmits either 10 Mbps Normal Link
Pulses (NLP) or 100 Mbps Idle symbols. When the LXT970A detects either NLPs or Idle symbols,
it automatically configures to match the detected operating speed in half-duplex mode. This ability
allows the LXT970A to communicate with devices that do not support auto-negotiation.
Figure 11. LXT970A Initialization Sequence
Power-up or Reset
Check Value
MDDIS
High
Low
MDIO Control
Mode
Exit
Manual Control
Mode
Disable MDIO Writes
Read H/W Control
Interface
Initialize MDIO Registers
Read H/W Control
Interface
Pass Control to MDIO
Interface
Update MDIO Registers
相關PDF資料 |
PDF描述 |
|---|---|
| LXT970 | Fast Ethernet Transceiver |
| LXT970QC | Fast Ethernet Transceiver |
| LXT971A | 3.3V Dual-Speed Fast Ethernet PHY Transceiver |
| LXT972A | 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet |
| LXT972ALC | 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LXT970AQC | 制造商:LEVEL ONE 功能描述: 制造商:LEVELONE 功能描述: 制造商: 功能描述: 制造商:LEVEL1 功能描述: |
| LXT970AQC.B11 | 制造商:Intel 功能描述: |
| LXT970ATC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecomm/Datacomm |
| LXT970QC | 制造商:LEVEL ONE 功能描述: 制造商:Level One 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP 制造商:Level One Communications 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP |
| LXT971A | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:3.3V Dual-Speed Fast Ethernet PHY Transceiver |
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