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參數(shù)資料
| 型號： | LXT971A |
| 廠商： | Intel Corp. |
| 英文描述： | 3.3V Dual-Speed Fast Ethernet PHY Transceiver |
| 中文描述： | 3.3雙速快速以太網(wǎng)物理層收發(fā)器 |
| 文件頁數(shù)： | 86/90頁 |
| 文件大?。?/td> | 568K |
| 代理商： | LXT971A |
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LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver
86
Datasheet
Document #: 249414
Revision #: 002
Rev. Date: August 7, 2002
20.7:4
LED3
Programming
bits
0000 = Display Speed Status
0001 = Display Transmit Status
0010 = Display Receive Status (Default)
0011 = Display Collision Status
0100 = Display Link Status
0101 = Display Duplex Status
0110 = Unused
0111 = Display Receive or Transmit Activity
1000 = Test mode- turn LED on
1001 = Test mode- turn LED off
1010 = Test mode- blink LED fast
1011 = Test mode- blink LED slow
1100 = Display Link and Receive Status combined
2
(Stretched)
1101 = Display Link and Activity Status combined
2
(Stretched)
1110 = Display Duplex and Collision Status combined
4
(Stretched)
1111 = Unused
R/W
0010
20.3:2
LEDFREQ
5
00 = Stretch LED events to 30 ms.
01 = Stretch LED events to 60 ms.
10 = Stretch LED events to 100 ms.
11 = Reserved.
R/W
00
20.1
PULSE-
STRETCH
0 = Disable pulse stretching of all LEDs.
1 = Enable pulse stretching of all LEDs.
R/W
1
20.0
Reserved
Ignore.
R/W
N/A
Table 57. Digital Config Register (Address 26)
Bit
Name
Description
Type
1
Default
26.15:12
Reserved
Reserved
RO
0
26.11
MII Drive Strength
1 = Increased MII drive strength
0 = Normal MII drive strength
R/W
0
26.10
Reserved
Reserved
RO
0
26.9
Show Symbol Error
1 = Map Symbol Error Signal To RXER
0 = Normal RXER
R/W
0
26.8:0
Reserved
Reserved
RO
0
1. R/W = Read /Write, RO = Read Only, LH = Latching High
Table 56. LED Configuration Register (Address 20, Hex 14) (Continued)
Bit
Name
Description
Type
1
Default
1. R/W = Read /Write
RO = Read Only
LH = Latching High
2. Link status is the primary LED driver. The LED is asserted (solid ON) when the link is up.
The secondary LED driver (Receive or Activity) causes the LED to change state (blink).
3. Combined event LED settings are not affected by Pulse Stretch Register bit 20.1. These display settings
are stretched regardless of the value of 20.1.
4. Duplex status is the primary LED driver. The LED is asserted (solid ON) when the link is full-duplex.
Collision status is the secondary LED driver. The LED changes state (blinks) when a collision occurs.
5. Values are relative approximations. Not guaranteed or production tested.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXT971ABC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN TRANSCEIVER|SINGLE|CMOS|BGA|64PIN|PLASTIC |
| LXT971ABE | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:3.3V Dual-Speed Fast Ethernet PHY Transceiver |
| LXT971ALC | 制造商:Intel 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP 制造商:Intellon Corporation 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP 制造商:Level One 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP |
| LXT971ALE | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:3.3V Dual-Speed Fast Ethernet PHY Transceiver |
| LXT971LC | 制造商:Intel 功能描述: |
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