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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)： | 30/90頁 |
| 文件大?。?/td> | 568K |
| 代理商： | LXT971A |
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LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver
30
Datasheet
Document #: 249414
Revision #: 002
Rev. Date: August 7, 2002
3.4.5
Hardware Configuration Settings
The LXT971A provides a hardware option to set the initial device configuration. The hardware
option uses the three LED driver pins. This provides three control bits, as listed in
Table 9
. The
LED drivers can operate as either open-drain or open-source circuits as shown in
Figure 8
.
Figure 8. Hardware Configuration Settings
Table 9. Hardware Configuration Settings
Desired Mode
LED/CFG
n
Pin Settings
1
Resulting Register Bit Values
Control Register
AN Advertisement Registers
Auto-
Neg
Speed
(Mbps)
Duplex
1
2
3
Auto-
Neg
0.12
Speed
0.13
FD
0.8
100FD
4.8
100TX
4.7
10FD
4.6
10T
4.5
Disabled
10
Half
Low
Low
Low
0
0
0
N/A
Auto-Negotiation Adver-
tisement
Full
Low
Low
High
1
100
Half
Low
High
Low
1
0
Full
Low
High
High
1
Enabled
100
Only
Half
High
Low
Low
1
1
0
0
1
0
0
Full
High
Low
High
1
1
1
0
0
10/100
Half
Only
High
High
Low
0
0
1
0
1
Full or
Half
High
High
High
1
1
1
1
1
1. Refer to
Table 7 on page 19
for LED/CFG pin assignments.
Configuration Bit = 1
Configuration Bit = 0
LED/CFG Pin
LED/CFG Pin
3.3 V
1. The LED/CFG pins automatically adjust their
polarity upon power-up or reset.
2. Unused LEDs may be implemented with pull-up/
pull-down resistors of 10 K.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LXT972A | 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet |
| 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 |
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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