參數(shù)資料
型號(hào)： LXT1000
英文描述： LAN TRANSCEIVER|SINGLE|HYBRID|BGA|492PIN|PLASTIC
中文描述： 網(wǎng)絡(luò)收發(fā)器|單|混合|的BGA | 492PIN |塑料
文件頁(yè)數(shù)： 17/104頁(yè)
文件大?。?/td> 1500K
代理商： LXT1000
Gigabit Ethernet Transceiver
—
LXT1000
Datasheet
17
Table 5. LXT1000 LED Indicator Configuration Signal Descriptions
Ball #
Symbol
Type
1
Description
AA5
LEDG
I/O
Gigabit LED.
This active High output is asserted when a Gigabit link is
established. Pull Low through a resistor/LED. (Refer to
“
PHY Address
Determination
”
on page 36
.)
Y6
LEDS
I/O
Speed LED.
This active high output is asserted when a 100 Mbps link is
established. Pull Low through a resistor/LED. (Refer to
“
PHY Address
Determination
”
on page 36
.)
AA4
LEDC/ADD4
I/O
3
Collision LED
2
.
After reset, this is a LED output indicating collision. The
LXT1000 automatically determines whether this output is active High or active
Low. In full-duplex Gigabit mode, the LEDC output goes active whenever packets
are simultaneously transmitted and received.
MDIO Address 4.
During power-up or reset, this ball is read to determine bit 4 of
the LXT1000
’
s MDIO Address.
W6
LEDF/ADD3
I/O
3
Duplex LED
2
. After reset, this ball is a LED output indicating duplex state. The
LXT1000 automatically determines whether this output is active High or active
Low.
MDIO Address 3.
During power-up or reset, this ball is read to determine bit 3 of
the LXT1000
’
s MDIO Address.
W4
LEDR/ADD2
I/O
Receive LED
2
.
After reset, this LED output indicates receive activity at the
twisted-pair (not indicated in Loopback operation). The LXT1000 automatically
determines whether this output is active High or active Low.
MDIO Address 2.
During power-up or reset, this ball is read to determine bit 2 of
the LXT1000
’
s MDIO Address.
U5
LEDT/ADD1
I/O
Transmit LED
2
.
After reset, this ball is an LED output indicating transmit activity
at the twisted-pair (not indicated in Loopback operation). The LXT1000
automatically determines whether this output is active High or active Low.
MDIO Address 1.
During power-up or reset, this ball is read to determine bit 1 of
the LXT1000
’
s MDIO Address.
U4
LEDL/ADD0
I/O
Link LED
2
. After reset, this ball is an LED output indicating link establishment at
any speed. The LXT1000 automatically determines whether this output is active
High or active Low.
MDIO Address 0.
During power-up or reset, this ball is read to determine bit 0 of
the LXT1000
’
s MDIO Address.
1. I/O Column Coding: I = Input, O = Output.
2. Polarity of LEDs is automatically set during the initial configuration.
3. The Input function, however, is not used.
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