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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)： | 22/70頁 |
| 文件大?。?/td> | 833K |
| 代理商： | LXT972A |
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LXT972A
—
3.3V Dual-Speed Fast Ethernet Transceiver Datasheet
22
Datasheet
3.4.3
Reduced Power Modes
The LXT972A offers two power-down modes.
3.4.3.1
Hardware Power Down
The hardware power-down mode is controlled by the PWRDWN pin. When PWRDWN is High,
the following conditions are true:
The LXT972A network port and clock are shut down.
All outputs are tri-stated.
All weak pad pull-up and pull-down resistors are disabled.
The MDIO registers are not accessible.
3.4.3.2
Software Power Down
Software power-down control is provided by bit 0.11 in the Control Register (refer to
Table 37 on
page 58
). During soft power-down, the following conditions are true:
The network port is shut down.
The MDIO registers remain accessible.
Figure 6. Initialization Sequence
MDDIS Voltage
Level
High
Low
MDIO Control
Mode
Hardware Control
Mode
Disable MDIO Read and
Write Operations
Reset MDIO Registers to
values read at H/W
Control Interface at last
Hardware Reset
MDIO Controlled Operation
(MDIO Writes Enabled)
Power-up or Reset
Initialize MDIO Registers
Read H/W Control
Interface
Software
Reset
Yes
No
相關(guān)PDF資料 |
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|---|---|
| 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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