dp83630sqx National Semiconductor Corporation, dp83630sqx Datasheet - Page 110

• Manufacturer Part Number: dp83630sqx
• Description: Precision Phyter - Ieee 1588 Precision Time Protocol Transceiver
• Manufacturer: National Semiconductor Corporation

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T2.11.1
T2.11.2
T2.11.3
T2.12.1
T2.12.2
T2.12.3
Parameter
Parameter
18.2.11 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
18.2.12 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
of TX_CLK.
violated.
TX_CLK High/Low Time
TXD[3:0], TX_EN Data Setup to
TX_CLK falling edge
TXD[3:0], TX_EN Data Hold from
TX_CLK rising edge
RX_CLK High/Low Time
RXD[3:0], RX_DV transition delay
from RX_CLK rising edge
RX_CLK rising edge delay from RXD
[3:0], RX_DV valid data
Description
Description
10 Mb/s MII mode
10 Mb/s MII mode
10 Mb/s MII mode
10 Mb/s MII mode
10 Mb/s MII mode
Notes
Notes
110
Min
160
100
100
Min
190
25
0
Typ
200
Typ
200
30136230
30136231
Max
Max
240
210
Units
Units
ns
ns
ns
ns
ns
ns