參數(shù)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(wǎng)收發(fā)器
文件頁數(shù)： 16/74頁
文件大?。?/td> 1061K
代理商： LXT970A
LXT970A
—
Dual-Speed Fast Ethernet Transceiver
16
Datasheet
Table 8
summarizes the relationship between input voltage levels (V
MF
1, V
MF
2, V
MF
3, V
MF
4) and
the configuration function for each of the MF input pins. Each MF pin shows two configuration
inputs; configuration function and MII address. The initial setting of the corresponding bit is also
shown.
Table 8. MF Pin Function Settings
1, 3
Input Voltage Levels
2
Pin
Function
V
MF
1 (5V)
V
MF
2 (3.5V)
V
MF
3 (1.5V)
V
MF
4 (0V)
MF0
MII Address Bit 0
1
1
0
0
Auto-Negotiation
Sets the initial value of bit
0.12
Disabled
(0.12 = 0)
Enabled
(0.12 = 1)
Enabled
(0.12 = 1)
Disabled
(0.12 = 0)
MF1
MII Address Bit 1
1
1
0
0
Repeater / DTE Mode
Sets the initial value of bit
19.13
DTE
(19.13 = 0)
Repeater
(19.13 = 1)
Repeater
(19.13 = 1)
DTE
(19.13 = 0)
MF2
MII Address Bit 2
1
1
0
0
Nibble (4B) / Symbol (5B) Mode
Sets the initial value of bit
19.4
Nibble (4B)
(19.4 = 0)
Symbol (5B)
(19.4 = 1)
Symbol (5B)
(19.4 = 1)
Nibble (4B)
(19.4 = 0)
MF3
MII Address Bit 3
1
1
0
0
Scrambler Operation
Sets the initial value of bit
19.3
Enabled
(19.3 = 0)
Bypassed
(19.3 = 1)
Bypassed
(19.3 = 1)
Enabled
(19.3 = 0)
MF4
MII Address Bit 4
1
1
0
0
If Auto-Negotiate Enabled via
MF0, MF4 works in combination
with CFG1 to control operating
speed and duplex advertisement
capabilities via bits 4.5 - 4.8.
See
Table 9
for details.
If Auto-Negotiate Disabled via
MF0, MF4 selects either
TX or FX Mode
Sets the initial value of bit
19.2
100TX
(19.2 = 0)
100FX
(19.2 = 1)
100FX
(19.2 = 1)
100TX
(19.2 = 0)
1. In MDIO Control Mode, the MF pins control only the initial or default value for the respective register bits. In Manual Control
mode, the MF pins provide continuous control of the respective register bits.
2. Input Voltage Levels (V
MF
1, V
MF
2, V
MF
3, V
MF
4) for MF pins.
3. See
Table 12
through
Table 14
for operating configuration set-up.
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
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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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