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): 50/74頁
文件大?。?/td> 1061K
代理商: LXT970A
LXT970A
Dual-Speed Fast Ethernet Transceiver
50
Datasheet
Table 29. 10BASE-T Transceiver Characteristics
Parameter
Sym
Min
Typ
1
Max
Units
Test Conditions
Transmitter
Peak Differential
Output Voltage
V
OP
2.2
2.5
2.8
V
With transformer, line
replaced by 100
(±1%)
resistor
Transmit Timing Jitter added by the
MAU and PLS Sections
0
2
11
ns
After line model specified by
IEEE 802.3 for 10BASE-T
MAU
Receiver
Receive Input Impedance
2
Z
IN
3.6
k
Between TPIP/TPIN
Differential Squelch Threshold
V
DS
300
420
585
mV
5 MHz square wave input
1. Typical values are at 25
°
C and are for design aid only; not guaranteed and not subject to production testing.
2. Parameter is guaranteed by design; not subject to production testing.
3. IEEE 802.3 specifies maximum jitter additions at 1.5 ns for the AUI cable, 0.5ns from the encoder, and 3.5ns from the MAU.
Table 30. 10BASE-T Link Integrity Timing Characteristics
Parameter
Sym
Min
Typ
1
Max
Units
Test Conditions
Time Link Loss Receive
T
LL
50
64
150
ms
Link Pulse
T
LP
2
4
7
Link Pulses
Link Min Receive Timer
T
LR
M
IN
2
4
7
ms
Link Max Receive Timer
T
LR
M
AX
50
64
150
ms
Link Transmit Period
Tlt
8
10
24
ms
Link Pulse Width
Tlpw
100
ns
1. Typical values are at 25
°
C and are for design aid only; not guaranteed and not subject to production testing.
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