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DP83849CVS/NOPB Scheda tecnica(PDF) 86 Page - Texas Instruments

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Il numero della parte DP83849CVS/NOPB
Spiegazioni elettronici  PHYTER DUAL Commercial Temperature Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver
PDF  101 Pages
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

DP83849CVS/NOPB Scheda tecnica(HTML) 86 Page - Texas Instruments

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8.2.11 10 Mb/s MII Transmit Timing
Note: An attached Mac should drive the transmit signals using the positive edge of TX_CLK. As shown above, the MII
signals are sampled on the falling edge of TX_CLK.
8.2.12 10 Mb/s MII Receive Timing
Note: RX_CLK may be held low for a longer period of time during transition between reference and recovered clocks.
Minimum high and low times will not be violated.
Parameter
Description
Notes
Min
Typ
Max Units
T2.11.1
TX_CLK High/Low Time
10 Mb/s MII mode
190
200
210
ns
T2.11.2
TXD[3:0], TX_EN Data Setup to TX_CLK fall
10 Mb/s MII mode
25
ns
T2.11.3
TXD[3:0], TX_EN Data Hold from TX_CLK rise
10 Mb/s MII mode
0
ns
Parameter
Description
Notes
Min
Typ
Max
Units
T2.12.1
RX_CLK High/Low Time
160
200
240
ns
T2.12.2
RX_CLK to RXD[3:0], RX_DV Delay
10 Mb/s MII mode
100
ns
T2.12.3
RX_CLK rising edge delay from RXD[3:0],
RX_DV Valid
10 Mb/s MII mode
100
ns
TX_CLK
TXD[3:0]
TX_EN
Valid Data
T2.11.2
T2.11.3
T2.11.1
T2.11.1
RX_CLK
RXD[3:0]
RX_DV
T2.12.2
T2.12.1
T2.12.1
T2.12.3
Valid Data



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