参数资料
型号: WJLXT971ALE.A4-857346
厂商: CORTINA SYSTEMS INC
元件分类: 网络接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封装: 10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64
文件页数: 50/80页
文件大小: 931K
代理商: WJLXT971ALE.A4-857346
Page 54
Cortina Systems LXT972A Single-Port 10/100 Mbps PHY Transceiver
LXT972A PHY
Datasheet
249186, Revision 5.2
13 September 2007
7.2 AC Timing Diagrams and
Parameters
7.2
AC Timing Diagrams and Parameters
See the following timing diagrams and AC parameters:
Table 27
10BASE-T PHY Characteristics
Parameter
Symbol
Min
Typ
Max
Units
Test Conditions
Transmitter
Peak differential output
voltage
VOP
2.2
2.5
2.8
V
With transformer, line
replaced by 100
Ω
resistor
Transition 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
ZIN
––
22
k
Ω
Differential Squelch
Threshold
VDS
300
420
585
mV
Table 28
10BASE-T Link Integrity Timing Characteristics
Parameter
Symbol
Min
Typ
Max
Units
Test Conditions
Time Link Loss Receive
TLL
50
150
ms
Link Pulse
TLP
2–
7
Link Pulses
Link Min Receive Timer
TLR MIN
2–
7
ms
Link Max Receive Timer
TLR MAX
50
150
ms
Link Transmit Period
Tlt
8
24
ms
Link Pulse Width
Tlpw
60
150
ns
1. Typical values are at 25 °C and are for design aid only, not guaranteed, and not subject to production
testing.
Table 29
Thermal Characteristics
Parameter
Value
Package
1 0x 10 x1.4 64 LD LQFP
Theta-JA
58 C/W
Theta-JC
27 C/W
Psi - JT
3.4 C/W
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PDF描述
WJLXT972ALC.A4-857341 DATACOM, ETHERNET TRANSCEIVER, PQFP64
WJLXT972ALC.A4-857345 DATACOM, ETHERNET TRANSCEIVER, PQFP64
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WJLXT971ALE.A4SE000 DATACOM, ETHERNET TRANSCEIVER, PQFP64
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