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參數(shù)資料
| 型號(hào)： | LAN8187I |
| 廠商： | SMSC Corporation |
| 英文描述： | High-Performance MII and RMII 10/100 Ethernet PHY with HP Auto-MDIX |
| 中文描述： | 高性能信息產(chǎn)業(yè)部及RMII 10/100以太網(wǎng)PHY與HP Auto - MDIX功能 |
| 文件頁(yè)數(shù)： | 65/66頁(yè) |
| 文件大?。?/td> | 545K |
| 代理商： | LAN8187I |
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High-Performance MII and RMII 10/100 Ethernet PHY with HP Auto-MDIX
Datasheet
SMSC LAN8187/LAN8187I
65
Revision 0.6 (02-24-06)
DATASHEET
Note:
For VDDIO operation below +2.5V, SMSC recommends designs add external strapping
resistors in addition the internal strapping resistors to ensure proper strapped operation.
Note 6.2
Measured at the line side of the transformer, line replaced by 100
Ω
(+/- 1%) resistor.
Note 6.3
Offset from 16 nS pulse width at 50% of pulse peak
Note 6.4
Measured differentially.
Note 6.5
Min/max voltages guaranteed as measured with 100
Ω
resistive load.
RXD[3:0]
Pull-down
RX_DV
Pull-down
RX_CLK
Pull-down
RX_ER/RXD4
Pull-down
TXEN
Pull-down
COL
Pull-down
CRS
Pull-down
Table 6.20 100Base-TX Transceiver Characteristics
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Peak Differential Output Voltage High
V
PPH
950
-
1050
mVpk
Note 6.2
Peak Differential Output Voltage Low
V
PPL
-950
-
-1050
mVpk
Note 6.2
Signal Amplitude Symmetry
V
SS
98
-
102
%
Note 6.2
Signal Rise & Fall Time
T
RF
3.0
-
5.0
nS
Note 6.2
Rise & Fall Time Symmetry
T
RFS
-
-
0.5
nS
Note 6.2
Duty Cycle Distortion
D
CD
35
50
65
%
Note 6.3
Overshoot & Undershoot
V
OS
-
-
5
%
Jitter
1.4
nS
Note 6.4
Table 6.21 10BASE-T Transceiver Characteristics
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Transmitter Peak Differential Output Voltage
V
OUT
2.2
2.5
2.8
V
Note 6.5
Receiver Differential Squelch Threshold
V
DS
300
420
585
mV
Table 6.19 Internal Pull-Up / Pull-Down Configurations
NAME
PULL-UP OR PULL-DOWN
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